Use Django to implement my GUI!

[Eugene NGONTANG]

Hi!

I'm a python developper, but new in django.

I'm devolopping a multi clients-server application.

The server and the clients are communicating via sockets, The server
receive somme states from clients, and display them in the User
interface.
In the other hand, the server has to send a message(packet) to the
client when an event  occurs in the GUI, and data are stored in a
database.

Then I choose to make a web interface where data could be viewed and
manipulated. And I discovered Django, which fit all my needs. I tested
and liked the framework.

My questions are:
- Can I override the djando admin methods so that i can not only
customized my views and html page, but also manipulate objects in
database, so that i can do another action when catching an  event in
the GUi.
For example, taking the django admin tutorial, I would like to do and
action like sending a message the user choose "add a poll". How can I
do those things? Cause I noticed that method that alter data in data
base are part of django admin module and cannot be overriden

- To achieve what I want, i would like to run my server engine and my
django admin in two separated threads. How do i run my admin module in
a thread? Cause till now i'm using the command line "python manage.py
runserver"

- I also tried to overide tables name, and foreign keys names. Could
you guys provide me a true life example?

- And now in the production step, I would like you guys to tell me
what to choose for serving files. I would like to with your experience
what's better between running a unicorn server or apache with mod_wsgi

I don't know if i'm clear, but i hope. In brief I'd like to use the
django framework features to design my Gui like i want, customize
interactions between the gui and the backend, and choose a good web
server for the production.

Thank you for advance

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Re: Use Django to implement my GUI!

[Alireza Savand]

https://github.com/toastdriven/django-tastypie

On Sunday, May 13, 2012 2:14:36 PM UTC+4, Eugene NGONTANG wrote:
>
> Hi! 
>
> I'm a python developper, but new in django. 
>
> I'm devolopping a multi clients-server application. 
>
> The server and the clients are communicating via sockets, The server 
> receive somme states from clients, and display them in the User 
> interface. 
> In the other hand, the server has to send a message(packet) to the 
> client when an event  occurs in the GUI, and data are stored in a 
> database. 
>
> Then I choose to make a web interface where data could be viewed and 
> manipulated. And I discovered Django, which fit all my needs. I tested 
> and liked the framework. 
>
> My questions are: 
> - Can I override the djando admin methods so that i can not only 
> customized my views and html page, but also manipulate objects in 
> database, so that i can do another action when catching an  event in 
> the GUi. 
> For example, taking the django admin tutorial, I would like to do and 
> action like sending a message the user choose "add a poll". How can I 
> do those things? Cause I noticed that method that alter data in data 
> base are part of django admin module and cannot be overriden 
>
> - To achieve what I want, i would like to run my server engine and my 
> django admin in two separated threads. How do i run my admin module in 
> a thread? Cause till now i'm using the command line "python manage.py 
> runserver" 
>
> - I also tried to overide tables name, and foreign keys names. Could 
> you guys provide me a true life example? 
>
> - And now in the production step, I would like you guys to tell me 
> what to choose for serving files. I would like to with your experience 
> what's better between running a unicorn server or apache with mod_wsgi 
>
> I don't know if i'm clear, but i hope. In brief I'd like to use the 
> django framework features to design my Gui like i want, customize 
> interactions between the gui and the backend, and choose a good web 
> server for the production. 
>
> Thank you for advance

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Re: Use Django to implement my GUI!

[Eugène Ngontang]

Yes, I can see tastypie is a good service, that even support REST protocol.

But I'd firt basically implement my gui with django and when i will master
well django, i could use tastypie, and turn my server to support REST, it
will be a good thing.

But please let's keep using only django for the begining.

Thanks.

2012/5/13 Alireza Savand 

> https://github.com/toastdriven/django-tastypie
>
>
> On Sunday, May 13, 2012 2:14:36 PM UTC+4, Eugene NGONTANG wrote:
>>
>> Hi!
>>
>> I'm a python developper, but new in django.
>>
>> I'm devolopping a multi clients-server application.
>>
>> The server and the clients are communicating via sockets, The server
>> receive somme states from clients, and display them in the User
>> interface.
>> In the other hand, the server has to send a message(packet) to the
>> client when an event  occurs in the GUI, and data are stored in a
>> database.
>>
>> Then I choose to make a web interface where data could be viewed and
>> manipulated. And I discovered Django, which fit all my needs. I tested
>> and liked the framework.
>>
>> My questions are:
>> - Can I override the djando admin methods so that i can not only
>> customized my views and html page, but also manipulate objects in
>> database, so that i can do another action when catching an  event in
>> the GUi.
>> For example, taking the django admin tutorial, I would like to do and
>> action like sending a message the user choose "add a poll". How can I
>> do those things? Cause I noticed that method that alter data in data
>> base are part of django admin module and cannot be overriden
>>
>> - To achieve what I want, i would like to run my server engine and my
>> django admin in two separated threads. How do i run my admin module in
>> a thread? Cause till now i'm using the command line "python manage.py
>> runserver"
>>
>> - I also tried to overide tables name, and foreign keys names. Could
>> you guys provide me a true life example?
>>
>> - And now in the production step, I would like you guys to tell me
>> what to choose for serving files. I would like to with your experience
>> what's better between running a unicorn server or apache with mod_wsgi
>>
>> I don't know if i'm clear, but i hope. In brief I'd like to use the
>> django framework features to design my Gui like i want, customize
>> interactions between the gui and the backend, and choose a good web
>> server for the production.
>>
>> Thank you for advance
>
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-- 
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sympav...@gmail.com

*Aux hommes il faut un chef, et au** chef il faut des hommes!*

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Re: Use Django to implement my GUI!

[Alireza Savand]

No, i posted django-tastypie not tastypie itself and it's easy to use.
Anyway if i'm implementing GUI based i would make it website, since it's an
advantages of SaaS.
But using client app[desktop-app] and a server-app[django] and having
multiply client and ... makes maintaining like a nightmare.
All i knew was that, Despite that you asked several question and i
just claimed to help in one of them :D

On Sun, May 13, 2012 at 4:06 PM, Eugène Ngontang wrote:

> Yes, I can see tastypie is a good service, that even support REST protocol.
>
> But I'd firt basically implement my gui with django and when i will master
> well django, i could use tastypie, and turn my server to support REST, it
> will be a good thing.
>
> But please let's keep using only django for the begining.
>
> Thanks.
>
>
> 2012/5/13 Alireza Savand 
>
>> https://github.com/toastdriven/django-tastypie
>>
>>
>> On Sunday, May 13, 2012 2:14:36 PM UTC+4, Eugene NGONTANG wrote:
>>>
>>> Hi!
>>>
>>> I'm a python developper, but new in django.
>>>
>>> I'm devolopping a multi clients-server application.
>>>
>>> The server and the clients are communicating via sockets, The server
>>> receive somme states from clients, and display them in the User
>>> interface.
>>> In the other hand, the server has to send a message(packet) to the
>>> client when an event  occurs in the GUI, and data are stored in a
>>> database.
>>>
>>> Then I choose to make a web interface where data could be viewed and
>>> manipulated. And I discovered Django, which fit all my needs. I tested
>>> and liked the framework.
>>>
>>> My questions are:
>>> - Can I override the djando admin methods so that i can not only
>>> customized my views and html page, but also manipulate objects in
>>> database, so that i can do another action when catching an  event in
>>> the GUi.
>>> For example, taking the django admin tutorial, I would like to do and
>>> action like sending a message the user choose "add a poll". How can I
>>> do those things? Cause I noticed that method that alter data in data
>>> base are part of django admin module and cannot be overriden
>>>
>>> - To achieve what I want, i would like to run my server engine and my
>>> django admin in two separated threads. How do i run my admin module in
>>> a thread? Cause till now i'm using the command line "python manage.py
>>> runserver"
>>>
>>> - I also tried to overide tables name, and foreign keys names. Could
>>> you guys provide me a true life example?
>>>
>>> - And now in the production step, I would like you guys to tell me
>>> what to choose for serving files. I would like to with your experience
>>> what's better between running a unicorn server or apache with mod_wsgi
>>>
>>> I don't know if i'm clear, but i hope. In brief I'd like to use the
>>> django framework features to design my Gui like i want, customize
>>> interactions between the gui and the backend, and choose a good web
>>> server for the production.
>>>
>>> Thank you for advance
>>
>>  --
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>> To post to this group, send email to django-users@googlegroups.com.
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>>
>
>
>
> --
> ngont...@epitech.net
> sympav...@gmail.com
> 
> *Aux hommes il faut un chef, et au** chef il faut des hommes!*
>
>  --
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Re: Use Django to implement my GUI!

[Jani Tiainen]

Hi,

There is several ways to achieve what you maybe want to do. One of the
simplest way is separate frontend (your userinterface) and server backend.
You can build your Django application as a service (xml-rpc, json-rpc,
restful). That would give you advantage to choose whatever frontend you
like. Of course it would add some overhead.

On Sun, May 13, 2012 at 1:14 PM, Eugene NGONTANG wrote:

> Hi!
>
> I'm a python developper, but new in django.
>
> I'm devolopping a multi clients-server application.
>
> The server and the clients are communicating via sockets, The server
> receive somme states from clients, and display them in the User
> interface.
> In the other hand, the server has to send a message(packet) to the
> client when an event  occurs in the GUI, and data are stored in a
> database.
>
>
Note that Django is mainly built for web (HTTP protocol based)
applications. In such an environment you run two different things: your GUI
(usually browser) that is totally ignorant of server side (Django). Then
you send request to some URL, Django routes it to some view and view
produces again next output to be displayed in GUI (browser again). One of
the common functions in the view is database manipulation.


> Then I choose to make a web interface where data could be viewed and
> manipulated. And I discovered Django, which fit all my needs. I tested
> and liked the framework.
>
> My questions are:
> - Can I override the djando admin methods so that i can not only
> customized my views and html page, but also manipulate objects in
> database, so that i can do another action when catching an  event in
> the GUi.
> For example, taking the django admin tutorial, I would like to do and
> action like sending a message the user choose "add a poll". How can I
> do those things? Cause I noticed that method that alter data in data
> base are part of django admin module and cannot be overriden
>
>
You shouldn't "fight against admin". If something cannot be done in the
admin you usually get a way with writing your own stuff.


> - To achieve what I want, i would like to run my server engine and my
> django admin in two separated threads. How do i run my admin module in
> a thread? Cause till now i'm using the command line "python manage.py
> runserver
>

Again your GUI would run "somewhere" (it's not relevant) and it's not
concern of Django. It's architecture is designed to be share nothing -
which means that you can run several threads/processes of your applications
- And those threads/processes are not aware of other existence. And it
doesn't matter.


> - I also tried to overide tables name, and foreign keys names. Could
> you guys provide me a true life example?
>
>
Err.. Override what and where? And how you tried to do that?


> - And now in the production step, I would like you guys to tell me
> what to choose for serving files. I would like to with your experience
> what's better between running a unicorn server or apache with mod_wsgi
>
> I don't know if i'm clear, but i hope. In brief I'd like to use the
> django framework features to design my Gui like i want, customize
> interactions between the gui and the backend, and choose a good web
> server for the production.
>
>
No you're definitely not clear. My interpretation is that you want to build
(non-http based) GUI using Django as backend server. Even Django isn't
exactly designed for such a work it still can do it.

If it was something else try to split your questions in smaller fragments,
perferably with more clearly specified use cases, workflows and samples of
the code.


> Thank you for advance
>
> --
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>
>


-- 
Jani Tiainen

- Well planned is half done, and a half done has been sufficient before...

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Re: Use Django to implement my GUI!

[Alec Taylor]

You could always create a responsive interface—e.g.: using
twitter-bootstrap—and then distribute it onto every platform.

Web (obviously): Django templates or "standard" web frontend—using
e.g.: REST, XMLRPC or JSONRPC—that calls functions and serialises data
in a less data heavy way (on clients' end)
Mobiles: Adobe's open-source PhoneGap
Desktops: Adobe Air, HTML Applications (Windows) and MacGap (OSX) are
all possibilities... however I would recommend checking out Nokia's
open-source Qt, and distributing your product with a renderer. In
essense, you would be distributing your own browser without your page
as homepage, and which can only access what you allow (e.g.:
*.mydomain.com/*). See their webkit-fancybrowser example for an idea
of how this could be done.

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Re: Use Django to implement my GUI!

[John Yeukhon Wong]

Maybe pyjs?
Do the GUI part using Python (which renders into javascript), and you can 
connect it using Django as your backend.

On Sunday, May 13, 2012 6:14:36 AM UTC-4, Eugene NGONTANG wrote:
>
> Hi! 
>
> I'm a python developper, but new in django. 
>
> I'm devolopping a multi clients-server application. 
>
> The server and the clients are communicating via sockets, The server 
> receive somme states from clients, and display them in the User 
> interface. 
> In the other hand, the server has to send a message(packet) to the 
> client when an event  occurs in the GUI, and data are stored in a 
> database. 
>
> Then I choose to make a web interface where data could be viewed and 
> manipulated. And I discovered Django, which fit all my needs. I tested 
> and liked the framework. 
>
> My questions are: 
> - Can I override the djando admin methods so that i can not only 
> customized my views and html page, but also manipulate objects in 
> database, so that i can do another action when catching an  event in 
> the GUi. 
> For example, taking the django admin tutorial, I would like to do and 
> action like sending a message the user choose "add a poll". How can I 
> do those things? Cause I noticed that method that alter data in data 
> base are part of django admin module and cannot be overriden 
>
> - To achieve what I want, i would like to run my server engine and my 
> django admin in two separated threads. How do i run my admin module in 
> a thread? Cause till now i'm using the command line "python manage.py 
> runserver" 
>
> - I also tried to overide tables name, and foreign keys names. Could 
> you guys provide me a true life example? 
>
> - And now in the production step, I would like you guys to tell me 
> what to choose for serving files. I would like to with your experience 
> what's better between running a unicorn server or apache with mod_wsgi 
>
> I don't know if i'm clear, but i hope. In brief I'd like to use the 
> django framework features to design my Gui like i want, customize 
> interactions between the gui and the backend, and choose a good web 
> server for the production. 
>
> Thank you for advance

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Re: Use Django to implement my GUI!

[Eugène Ngontang]

Thanks Guys for all.
I will carefully look at all your suggestions and see what is better in a
production environment.
But the idea of having the possibility to abstract the frontend so that it
can be changed is the best i think and was what i intended to do after my
server become working and stable.

I want to run server engine(backend) in one thread catching and processing
network packets from clients, and my the fronted running in a separated
thread rendering data catching gui event.
I first choose to do it with cherrypy but it's not sweet for big projects
and the fronted would not be so generic that way.

I then discover django with its features and possibilities.

I hope i will make and implement the best choice with your help.

Thanks and see you soon.
Le 13 mai 2012 22:10, "John Yeukhon Wong"  a écrit :

> Maybe pyjs?
> Do the GUI part using Python (which renders into javascript), and you can
> connect it using Django as your backend.
>
> On Sunday, May 13, 2012 6:14:36 AM UTC-4, Eugene NGONTANG wrote:
>>
>> Hi!
>>
>> I'm a python developper, but new in django.
>>
>> I'm devolopping a multi clients-server application.
>>
>> The server and the clients are communicating via sockets, The server
>> receive somme states from clients, and display them in the User
>> interface.
>> In the other hand, the server has to send a message(packet) to the
>> client when an event  occurs in the GUI, and data are stored in a
>> database.
>>
>> Then I choose to make a web interface where data could be viewed and
>> manipulated. And I discovered Django, which fit all my needs. I tested
>> and liked the framework.
>>
>> My questions are:
>> - Can I override the djando admin methods so that i can not only
>> customized my views and html page, but also manipulate objects in
>> database, so that i can do another action when catching an  event in
>> the GUi.
>> For example, taking the django admin tutorial, I would like to do and
>> action like sending a message the user choose "add a poll". How can I
>> do those things? Cause I noticed that method that alter data in data
>> base are part of django admin module and cannot be overriden
>>
>> - To achieve what I want, i would like to run my server engine and my
>> django admin in two separated threads. How do i run my admin module in
>> a thread? Cause till now i'm using the command line "python manage.py
>> runserver"
>>
>> - I also tried to overide tables name, and foreign keys names. Could
>> you guys provide me a true life example?
>>
>> - And now in the production step, I would like you guys to tell me
>> what to choose for serving files. I would like to with your experience
>> what's better between running a unicorn server or apache with mod_wsgi
>>
>> I don't know if i'm clear, but i hope. In brief I'd like to use the
>> django framework features to design my Gui like i want, customize
>> interactions between the gui and the backend, and choose a good web
>> server for the production.
>>
>> Thank you for advance
>
>  --
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Re: Use Django to implement my GUI!

[Eugène Ngontang]

Hi Jani!

I haven't seen the last statements of your post, whre you say I'm not
really clear and that i'm building a non-http GUI using Django.


OK let's stay on the rendering issue only, and specify things simply. This
is a simple description of the architecture I want to set up :

- A Client (not a user interface). Client here means a module which is
installed in a remote computer and communicate with the server via socket.

- A server listening from several remote client (Here i'm not talking yet
about http request), and receive informatons from them. In fact client must
be doing actions and send informations about their actions to the server.
In the oder hand data to be processed by each client is pushed/dispatched
by the server.

- And admin (not Django Admin, but admin in the sens of my app), destined
to be the module allowing use of the application. Then the Admin module is
part of the server and will proviede a GUI for manipulating data in the
data base. It's in this GUI that users of the application will enter their
request, by filling a form or clicking a link for exemple. And data from
the GUI could be stored in the data base, while being send to the remote
clients (not to be displayed by the client, but to be processed). In the
same way, informations comming from those clients to the server have to be
diplayed in the GUI.

With a graphical GUI, The server could have a reference to an object
representing my GUI, and it will be done.
But I choose a web GUI for view and administration. It's where Django comes.

And my problem is to make my server being running a network thread,
receiving data from the GUI(web browser) and sending informations update to
the GUI (for web page content).

This is really my issue. If all the actions of my server depended on my GUI
request (http request), I could do what I like behind when handling a http
request, but while managing http:8080 connexions, the application is
running another process/thread on another TCP/UDP port.

And yes I want a web GUI.

Is why I'm looking the best way to achieve that. We can exclude Django web
server, as it will not be used in production for the application deployment.

Hope now it's clear for you, and more for the other users.

Thanks!

2012/5/13 Jani Tiainen 

> Hi,
>
> There is several ways to achieve what you maybe want to do. One of the
> simplest way is separate frontend (your userinterface) and server backend.
> You can build your Django application as a service (xml-rpc, json-rpc,
> restful). That would give you advantage to choose whatever frontend you
> like. Of course it would add some overhead.
>
> On Sun, May 13, 2012 at 1:14 PM, Eugene NGONTANG wrote:
>
>> Hi!
>>
>> I'm a python developper, but new in django.
>>
>> I'm devolopping a multi clients-server application.
>>
>> The server and the clients are communicating via sockets, The server
>> receive somme states from clients, and display them in the User
>> interface.
>> In the other hand, the server has to send a message(packet) to the
>> client when an event  occurs in the GUI, and data are stored in a
>> database.
>>
>>
> Note that Django is mainly built for web (HTTP protocol based)
> applications. In such an environment you run two different things: your GUI
> (usually browser) that is totally ignorant of server side (Django). Then
> you send request to some URL, Django routes it to some view and view
> produces again next output to be displayed in GUI (browser again). One of
> the common functions in the view is database manipulation.
>
>
>> Then I choose to make a web interface where data could be viewed and
>> manipulated. And I discovered Django, which fit all my needs. I tested
>> and liked the framework.
>>
>> My questions are:
>> - Can I override the djando admin methods so that i can not only
>> customized my views and html page, but also manipulate objects in
>> database, so that i can do another action when catching an  event in
>> the GUi.
>> For example, taking the django admin tutorial, I would like to do and
>> action like sending a message the user choose "add a poll". How can I
>> do those things? Cause I noticed that method that alter data in data
>> base are part of django admin module and cannot be overriden
>>
>>
> You shouldn't "fight against admin". If something cannot be done in the
> admin you usually get a way with writing your own stuff.
>
>
>> - To achieve what I want, i would like to run my server engine and my
>> django admin in two separated threads. How do i run my admin module in
>> a thread? Cause till now i'm using the command line "python manage.py
>> runserver
>>
>
> Again your GUI would run "somewhere" (it's not relevant) and it's not
> concern of Django. It's architecture is designed to be share nothing -
> which means that you can run several threads/processes of your applications
> - And those threads/processes are not aware of other existence. And it
> doesn't matter.
>
>
>> - I also tried to overide tables name, and foreig

Re: Use Django to implement my GUI!

[Alec Taylor]

No reason to do anything crazy like that.

Forget SOCKETS, use HTTP or HTTPS.

Clientside/mobileside/webside build in HTML+CSS+JS.

#win

On Tue, May 15, 2012 at 9:18 AM, Eugène Ngontang  wrote:
> Hi Jani!
>
> I haven't seen the last statements of your post, whre you say I'm not really
> clear and that i'm building a non-http GUI using Django.
>
>
> OK let's stay on the rendering issue only, and specify things simply. This
> is a simple description of the architecture I want to set up :
>
> - A Client (not a user interface). Client here means a module which is
> installed in a remote computer and communicate with the server via socket.
>
> - A server listening from several remote client (Here i'm not talking yet
> about http request), and receive informatons from them. In fact client must
> be doing actions and send informations about their actions to the server. In
> the oder hand data to be processed by each client is pushed/dispatched by
> the server.
>
> - And admin (not Django Admin, but admin in the sens of my app), destined to
> be the module allowing use of the application. Then the Admin module is part
> of the server and will proviede a GUI for manipulating data in the data
> base. It's in this GUI that users of the application will enter their
> request, by filling a form or clicking a link for exemple. And data from the
> GUI could be stored in the data base, while being send to the remote clients
> (not to be displayed by the client, but to be processed). In the same way,
> informations comming from those clients to the server have to be diplayed in
> the GUI.
>
> With a graphical GUI, The server could have a reference to an object
> representing my GUI, and it will be done.
> But I choose a web GUI for view and administration. It's where Django comes.
>
> And my problem is to make my server being running a network thread,
> receiving data from the GUI(web browser) and sending informations update to
> the GUI (for web page content).
>
> This is really my issue. If all the actions of my server depended on my GUI
> request (http request), I could do what I like behind when handling a http
> request, but while managing http:8080 connexions, the application is running
> another process/thread on another TCP/UDP port.
>
> And yes I want a web GUI.
>
> Is why I'm looking the best way to achieve that. We can exclude Django web
> server, as it will not be used in production for the application deployment.
>
> Hope now it's clear for you, and more for the other users.
>
> Thanks!
>
>
> 2012/5/13 Jani Tiainen 
>>
>> Hi,
>>
>> There is several ways to achieve what you maybe want to do. One of the
>> simplest way is separate frontend (your userinterface) and server backend.
>> You can build your Django application as a service (xml-rpc, json-rpc,
>> restful). That would give you advantage to choose whatever frontend you
>> like. Of course it would add some overhead.
>>
>> On Sun, May 13, 2012 at 1:14 PM, Eugene NGONTANG 
>> wrote:
>>>
>>> Hi!
>>>
>>> I'm a python developper, but new in django.
>>>
>>> I'm devolopping a multi clients-server application.
>>>
>>> The server and the clients are communicating via sockets, The server
>>> receive somme states from clients, and display them in the User
>>> interface.
>>> In the other hand, the server has to send a message(packet) to the
>>> client when an event  occurs in the GUI, and data are stored in a
>>> database.
>>>
>>
>> Note that Django is mainly built for web (HTTP protocol based)
>> applications. In such an environment you run two different things: your GUI
>> (usually browser) that is totally ignorant of server side (Django). Then you
>> send request to some URL, Django routes it to some view and view produces
>> again next output to be displayed in GUI (browser again). One of the common
>> functions in the view is database manipulation.
>>
>>>
>>> Then I choose to make a web interface where data could be viewed and
>>> manipulated. And I discovered Django, which fit all my needs. I tested
>>> and liked the framework.
>>>
>>> My questions are:
>>> - Can I override the djando admin methods so that i can not only
>>> customized my views and html page, but also manipulate objects in
>>> database, so that i can do another action when catching an  event in
>>> the GUi.
>>> For example, taking the django admin tutorial, I would like to do and
>>> action like sending a message the user choose "add a poll". How can I
>>> do those things? Cause I noticed that method that alter data in data
>>> base are part of django admin module and cannot be overriden
>>>
>>
>> You shouldn't "fight against admin". If something cannot be done in the
>> admin you usually get a way with writing your own stuff.
>>
>>>
>>> - To achieve what I want, i would like to run my server engine and my
>>> django admin in two separated threads. How do i run my admin module in
>>> a thread? Cause till now i'm using the command line "python manage.py
>>> runserver
>>
>>
>> Again your GUI woul

Re: Use Django to implement my GUI!

[Jani Tiainen]

Hi,

Now it starts to make "sense".

I just wonder why are you trying to build something so extremely 
complicated?


What is the rationale behind to have additional middleware layer between 
web ui and the server backend?


Wouldn't it be sufficient to have architecture like:

Browser <-> django middleware <-> remote backend

Communication between django middle ware and remote backend should be 
built on top of some messaging system, like celery + rabbitmq which 
gives you quite standard asyncronous communication between django 
middleware and remote backend. Of course you might need to write some 
adapters on remote side but that's part of the job.


Only real problem is that if you need to push changes to browser side. 
There doesn't exists any really good ways to do that. HTML5 was supposed 
to bring websockets to overcome the problem. One big problem is that 
only from IE series only IE 10 supports it. All others, FF, Chrome, 
Safari has had it for a good while.


There exists also alternative workarounds like Comet, BOSH, push and few 
others.


So let
15.5.2012 2:18, Eugčne Ngontang kirjoitti:

Hi Jani!

I haven't seen the last statements of your post, whre you say I'm not
really clear and that i'm building a non-http GUI using Django.


OK let's stay on the rendering issue only, and specify things simply.
This is a simple description of the architecture I want to set up :

- A Client (not a user interface). Client here means a module which is
installed in a remote computer and communicate with the server via socket.

- A server listening from several remote client (Here i'm not talking
yet about http request), and receive informatons from them. In fact
client must be doing actions and send informations about their actions
to the server. In the oder hand data to be processed by each client is
pushed/dispatched by the server.

- And admin (not Django Admin, but admin in the sens of my app),
destined to be the module allowing use of the application. Then the
Admin module is part of the server and will proviede a GUI for
manipulating data in the data base. It's in this GUI that users of the
application will enter their request, by filling a form or clicking a
link for exemple. And data from the GUI could be stored in the data
base, while being send to the remote clients (not to be displayed by the
client, but to be processed). In the same way, informations comming from
those clients to the server have to be diplayed in the GUI.

With a graphical GUI, The server could have a reference to an object
representing my GUI, and it will be done.
But I choose a web GUI for view and administration. It's where Django comes.

And my problem is to make my server being running a network thread,
receiving data from the GUI(web browser) and sending informations update
to the GUI (for web page content).

This is really my issue. If all the actions of my server depended on my
GUI request (http request), I could do what I like behind when handling
a http request, but while managing http:8080 connexions, the application
is running another process/thread on another TCP/UDP port.

And yes I want a web GUI.

Is why I'm looking the best way to achieve that. We can exclude Django
web server, as it will not be used in production for the application
deployment.

Hope now it's clear for you, and more for the other users.

Thanks!

2012/5/13 Jani Tiainen mailto:rede...@gmail.com>>

Hi,

There is several ways to achieve what you maybe want to do. One of
the simplest way is separate frontend (your userinterface) and
server backend. You can build your Django application as a service
(xml-rpc, json-rpc, restful). That would give you advantage to
choose whatever frontend you like. Of course it would add some overhead.

On Sun, May 13, 2012 at 1:14 PM, Eugene NGONTANG
mailto:sympav...@gmail.com>> wrote:

Hi!

I'm a python developper, but new in django.

I'm devolopping a multi clients-server application.

The server and the clients are communicating via sockets, The server
receive somme states from clients, and display them in the User
interface.
In the other hand, the server has to send a message(packet) to the
client when an event  occurs in the GUI, and data are stored in a
database.


Note that Django is mainly built for web (HTTP protocol based)
applications. In such an environment you run two different things:
your GUI (usually browser) that is totally ignorant of server side
(Django). Then you send request to some URL, Django routes it to
some view and view produces again next output to be displayed in GUI
(browser again). One of the common functions in the view is database
manipulation.

Then I choose to make a web interface where data could be viewed and
manipulated. And I discovered Django, which fit all my needs. I
tested
and liked the framework.

My quest

Re: Use Django to implement my GUI!

[Eugène Ngontang]

Hi Jani!

Now you can understand what i meant, but I'm not just try to mec things
complicated.

I'm not talking here about my technical implementation, but i'm describing
the needs/contraints, and my app architecture to you.

-  The remote clients are at the heart of the software system, since data
stored in the database are destined to them (the server push each
information to the corresponding host)
- When a client starts, it trys to establish a connection with the server,
and if succeed, it retrieves its informations from the server. The server
then send back informations conerning the host executing the client (the
way server retrieves informations from the data base manager doesn't matter
here, it's a technical purpose)
- When a task state changes, it has to notify the server by sending a
packet through the network. The GUI (web browser) has then to display the
new state.
- When a user of the software wants to create a new task on a host, it uses
the GUI for the purpose, and the information has to be sent to the remote
corresponding client/host for processing.

Tell in my place, what logic would you adopt. I would like idea from you
guys in this case, before go on a first definitive choice.

I can see web sockets solves so much problems for developpers, and i'm
still looking if it could help achieve correctly what I want to. The
problem of IE < 10 for the instance is not so important.

Now also, can you try to advise me the best way for serving file using
python-Django (apache, unicorn, ..)?

Thanks again.

2012/5/15 Jani Tiainen 

> Hi,
>
> Now it starts to make "sense".
>
> I just wonder why are you trying to build something so extremely
> complicated?
>
> What is the rationale behind to have additional middleware layer between
> web ui and the server backend?
>
> Wouldn't it be sufficient to have architecture like:
>
> Browser <-> django middleware <-> remote backend
>
> Communication between django middle ware and remote backend should be
> built on top of some messaging system, like celery + rabbitmq which gives
> you quite standard asyncronous communication between django middleware and
> remote backend. Of course you might need to write some adapters on remote
> side but that's part of the job.
>
> Only real problem is that if you need to push changes to browser side.
> There doesn't exists any really good ways to do that. HTML5 was supposed to
> bring websockets to overcome the problem. One big problem is that only from
> IE series only IE 10 supports it. All others, FF, Chrome, Safari has had it
> for a good while.
>
> There exists also alternative workarounds like Comet, BOSH, push and few
> others.
>
> So let
> 15.5.2012 2:18, Eugčne Ngontang kirjoitti:
>
>> Hi Jani!
>>
>> I haven't seen the last statements of your post, whre you say I'm not
>> really clear and that i'm building a non-http GUI using Django.
>>
>>
>> OK let's stay on the rendering issue only, and specify things simply.
>> This is a simple description of the architecture I want to set up :
>>
>> - A Client (not a user interface). Client here means a module which is
>> installed in a remote computer and communicate with the server via socket.
>>
>> - A server listening from several remote client (Here i'm not talking
>> yet about http request), and receive informatons from them. In fact
>> client must be doing actions and send informations about their actions
>> to the server. In the oder hand data to be processed by each client is
>> pushed/dispatched by the server.
>>
>> - And admin (not Django Admin, but admin in the sens of my app),
>> destined to be the module allowing use of the application. Then the
>> Admin module is part of the server and will proviede a GUI for
>> manipulating data in the data base. It's in this GUI that users of the
>> application will enter their request, by filling a form or clicking a
>> link for exemple. And data from the GUI could be stored in the data
>> base, while being send to the remote clients (not to be displayed by the
>> client, but to be processed). In the same way, informations comming from
>> those clients to the server have to be diplayed in the GUI.
>>
>> With a graphical GUI, The server could have a reference to an object
>> representing my GUI, and it will be done.
>> But I choose a web GUI for view and administration. It's where Django
>> comes.
>>
>> And my problem is to make my server being running a network thread,
>> receiving data from the GUI(web browser) and sending informations update
>> to the GUI (for web page content).
>>
>> This is really my issue. If all the actions of my server depended on my
>> GUI request (http request), I could do what I like behind when handling
>> a http request, but while managing http:8080 connexions, the application
>> is running another process/thread on another TCP/UDP port.
>>
>> And yes I want a web GUI.
>>
>> Is why I'm looking the best way to achieve that. We can exclude Django
>> web server, as it will not be used in production for 

Re: Use Django to implement my GUI!

[Jani Tiainen]

Hi,

Like I said, it all depends what you have and what is the goal.

You keep constantly talking about magical "server" that talks with the 
database. Is this server already existing piece of infrastructure that 
some programs already use and you like to hook up with that?


Or is this server something that you just invented in lack of better 
knowledge?


You talk about state changes (in example you give a task). Must those 
changes be reflected in "real time" between arbitrary clients? Or is it 
sufficient that client sees changes at some later point?




16.5.2012 3:30, Eugène Ngontang kirjoitti:

Hi Jani!

Now you can understand what i meant, but I'm not just try to mec things
complicated.

I'm not talking here about my technical implementation, but i'm
describing the needs/contraints, and my app architecture to you.

-  The remote clients are at the heart of the software system, since
data stored in the database are destined to them (the server push each
information to the corresponding host)
- When a client starts, it trys to establish a connection with the
server, and if succeed, it retrieves its informations from the server.
The server then send back informations conerning the host executing the
client (the way server retrieves informations from the data base manager
doesn't matter here, it's a technical purpose)
- When a task state changes, it has to notify the server by sending a
packet through the network. The GUI (web browser) has then to display
the new state.
- When a user of the software wants to create a new task on a host, it
uses the GUI for the purpose, and the information has to be sent to the
remote corresponding client/host for processing.

Tell in my place, what logic would you adopt. I would like idea from you
guys in this case, before go on a first definitive choice.

I can see web sockets solves so much problems for developpers, and i'm
still looking if it could help achieve correctly what I want to. The
problem of IE < 10 for the instance is not so important.

Now also, can you try to advise me the best way for serving file using
python-Django (apache, unicorn, ..)?

Thanks again.

2012/5/15 Jani Tiainen mailto:rede...@gmail.com>>

Hi,

Now it starts to make "sense".

I just wonder why are you trying to build something so extremely
complicated?

What is the rationale behind to have additional middleware layer
between web ui and the server backend?

Wouldn't it be sufficient to have architecture like:

Browser <-> django middleware <-> remote backend

Communication between django middle ware and remote backend should
be built on top of some messaging system, like celery + rabbitmq
which gives you quite standard asyncronous communication between
django middleware and remote backend. Of course you might need to
write some adapters on remote side but that's part of the job.

Only real problem is that if you need to push changes to browser
side. There doesn't exists any really good ways to do that. HTML5
was supposed to bring websockets to overcome the problem. One big
problem is that only from IE series only IE 10 supports it. All
others, FF, Chrome, Safari has had it for a good while.

There exists also alternative workarounds like Comet, BOSH, push and
few others.

So let
15.5.2012 2:18, Eugčne Ngontang kirjoitti:

Hi Jani!

I haven't seen the last statements of your post, whre you say
I'm not
really clear and that i'm building a non-http GUI using Django.


OK let's stay on the rendering issue only, and specify things
simply.
This is a simple description of the architecture I want to set up :

- A Client (not a user interface). Client here means a module
which is
installed in a remote computer and communicate with the server
via socket.

- A server listening from several remote client (Here i'm not
talking
yet about http request), and receive informatons from them. In fact
client must be doing actions and send informations about their
actions
to the server. In the oder hand data to be processed by each
client is
pushed/dispatched by the server.

- And admin (not Django Admin, but admin in the sens of my app),
destined to be the module allowing use of the application. Then the
Admin module is part of the server and will proviede a GUI for
manipulating data in the data base. It's in this GUI that users
of the
application will enter their request, by filling a form or
clicking a
link for exemple. And data from the GUI could be stored in the data
base, while being send to the remote clients (not to be
displayed by the
client, but to be processed). In the same way, informations
comming from
those clients to the server have to be diplayed in the G

Re: Use Django to implement my GUI!

[Eugène Ngontang]

No i'm not inventing a server.
The application has a centrilzed server (module server installed on a
dedicated host
).
The dispatches tasks to remote clients (the client module is installed on
each client host) and receives informations from clients about taks state.

How would you like me to describe or call my app  components?
What is not clear for you in my architecture description?
How would you call my server module?
And i'm not saying the database is installed on the same machine as the
server, even if it could be.
But only the server can access database directly.

If you like so, What i call server could stand for a central task
supervisor.

Thanks for attention Jani.
Le 16 mai 2012 12:01, "Jani Tiainen"  a écrit :

> Hi,
>
> Like I said, it all depends what you have and what is the goal.
>
> You keep constantly talking about magical "server" that talks with the
> database. Is this server already existing piece of infrastructure that some
> programs already use and you like to hook up with that?
>
> Or is this server something that you just invented in lack of better
> knowledge?
>
> You talk about state changes (in example you give a task). Must those
> changes be reflected in "real time" between arbitrary clients? Or is it
> sufficient that client sees changes at some later point?
>
>
>
> 16.5.2012 3:30, Eugène Ngontang kirjoitti:
>
>> Hi Jani!
>>
>> Now you can understand what i meant, but I'm not just try to mec things
>> complicated.
>>
>> I'm not talking here about my technical implementation, but i'm
>> describing the needs/contraints, and my app architecture to you.
>>
>> -  The remote clients are at the heart of the software system, since
>> data stored in the database are destined to them (the server push each
>> information to the corresponding host)
>> - When a client starts, it trys to establish a connection with the
>> server, and if succeed, it retrieves its informations from the server.
>> The server then send back informations conerning the host executing the
>> client (the way server retrieves informations from the data base manager
>> doesn't matter here, it's a technical purpose)
>> - When a task state changes, it has to notify the server by sending a
>> packet through the network. The GUI (web browser) has then to display
>> the new state.
>> - When a user of the software wants to create a new task on a host, it
>> uses the GUI for the purpose, and the information has to be sent to the
>> remote corresponding client/host for processing.
>>
>> Tell in my place, what logic would you adopt. I would like idea from you
>> guys in this case, before go on a first definitive choice.
>>
>> I can see web sockets solves so much problems for developpers, and i'm
>> still looking if it could help achieve correctly what I want to. The
>> problem of IE < 10 for the instance is not so important.
>>
>> Now also, can you try to advise me the best way for serving file using
>> python-Django (apache, unicorn, ..)?
>>
>> Thanks again.
>>
>> 2012/5/15 Jani Tiainen mailto:rede...@gmail.com>>
>>
>>Hi,
>>
>>Now it starts to make "sense".
>>
>>I just wonder why are you trying to build something so extremely
>>complicated?
>>
>>What is the rationale behind to have additional middleware layer
>>between web ui and the server backend?
>>
>>Wouldn't it be sufficient to have architecture like:
>>
>>Browser <-> django middleware <-> remote backend
>>
>>Communication between django middle ware and remote backend should
>>be built on top of some messaging system, like celery + rabbitmq
>>which gives you quite standard asyncronous communication between
>>django middleware and remote backend. Of course you might need to
>>write some adapters on remote side but that's part of the job.
>>
>>Only real problem is that if you need to push changes to browser
>>side. There doesn't exists any really good ways to do that. HTML5
>>was supposed to bring websockets to overcome the problem. One big
>>problem is that only from IE series only IE 10 supports it. All
>>others, FF, Chrome, Safari has had it for a good while.
>>
>>There exists also alternative workarounds like Comet, BOSH, push and
>>few others.
>>
>>So let
>>15.5.2012 2:18, Eugčne Ngontang kirjoitti:
>>
>>Hi Jani!
>>
>>I haven't seen the last statements of your post, whre you say
>>I'm not
>>really clear and that i'm building a non-http GUI using Django.
>>
>>
>>OK let's stay on the rendering issue only, and specify things
>>simply.
>>This is a simple description of the architecture I want to set up :
>>
>>- A Client (not a user interface). Client here means a module
>>which is
>>installed in a remote computer and communicate with the server
>>via socket.
>>
>>- A server listening from several remote client (Here i'm not
>>talking
>>yet about http request), and receive 

Re: Use Django to implement my GUI!

[Marcin Tustin]

A lot of people seem confused by your architecture. It might help if you
provided a complete (but high-level) description of the architecture of the
system in a single email.

On Wed, May 16, 2012 at 12:47 PM, Eugène Ngontang wrote:

> No i'm not inventing a server.
> The application has a centrilzed server (module server installed on a
> dedicated host
> ).
> The dispatches tasks to remote clients (the client module is installed on
> each client host) and receives informations from clients about taks state.
>
> How would you like me to describe or call my app  components?
> What is not clear for you in my architecture description?
> How would you call my server module?
> And i'm not saying the database is installed on the same machine as the
> server, even if it could be.
> But only the server can access database directly.
>
> If you like so, What i call server could stand for a central task
> supervisor.
>
> Thanks for attention Jani.
> Le 16 mai 2012 12:01, "Jani Tiainen"  a écrit :
>
> Hi,
>>
>> Like I said, it all depends what you have and what is the goal.
>>
>> You keep constantly talking about magical "server" that talks with the
>> database. Is this server already existing piece of infrastructure that some
>> programs already use and you like to hook up with that?
>>
>> Or is this server something that you just invented in lack of better
>> knowledge?
>>
>> You talk about state changes (in example you give a task). Must those
>> changes be reflected in "real time" between arbitrary clients? Or is it
>> sufficient that client sees changes at some later point?
>>
>>
>>
>> 16.5.2012 3:30, Eugène Ngontang kirjoitti:
>>
>>> Hi Jani!
>>>
>>> Now you can understand what i meant, but I'm not just try to mec things
>>> complicated.
>>>
>>> I'm not talking here about my technical implementation, but i'm
>>> describing the needs/contraints, and my app architecture to you.
>>>
>>> -  The remote clients are at the heart of the software system, since
>>> data stored in the database are destined to them (the server push each
>>> information to the corresponding host)
>>> - When a client starts, it trys to establish a connection with the
>>> server, and if succeed, it retrieves its informations from the server.
>>> The server then send back informations conerning the host executing the
>>> client (the way server retrieves informations from the data base manager
>>> doesn't matter here, it's a technical purpose)
>>> - When a task state changes, it has to notify the server by sending a
>>> packet through the network. The GUI (web browser) has then to display
>>> the new state.
>>> - When a user of the software wants to create a new task on a host, it
>>> uses the GUI for the purpose, and the information has to be sent to the
>>> remote corresponding client/host for processing.
>>>
>>> Tell in my place, what logic would you adopt. I would like idea from you
>>> guys in this case, before go on a first definitive choice.
>>>
>>> I can see web sockets solves so much problems for developpers, and i'm
>>> still looking if it could help achieve correctly what I want to. The
>>> problem of IE < 10 for the instance is not so important.
>>>
>>> Now also, can you try to advise me the best way for serving file using
>>> python-Django (apache, unicorn, ..)?
>>>
>>> Thanks again.
>>>
>>> 2012/5/15 Jani Tiainen mailto:rede...@gmail.com>>
>>>
>>>Hi,
>>>
>>>Now it starts to make "sense".
>>>
>>>I just wonder why are you trying to build something so extremely
>>>complicated?
>>>
>>>What is the rationale behind to have additional middleware layer
>>>between web ui and the server backend?
>>>
>>>Wouldn't it be sufficient to have architecture like:
>>>
>>>Browser <-> django middleware <-> remote backend
>>>
>>>Communication between django middle ware and remote backend should
>>>be built on top of some messaging system, like celery + rabbitmq
>>>which gives you quite standard asyncronous communication between
>>>django middleware and remote backend. Of course you might need to
>>>write some adapters on remote side but that's part of the job.
>>>
>>>Only real problem is that if you need to push changes to browser
>>>side. There doesn't exists any really good ways to do that. HTML5
>>>was supposed to bring websockets to overcome the problem. One big
>>>problem is that only from IE series only IE 10 supports it. All
>>>others, FF, Chrome, Safari has had it for a good while.
>>>
>>>There exists also alternative workarounds like Comet, BOSH, push and
>>>few others.
>>>
>>>So let
>>>15.5.2012 2:18, Eugčne Ngontang kirjoitti:
>>>
>>>Hi Jani!
>>>
>>>I haven't seen the last statements of your post, whre you say
>>>I'm not
>>>really clear and that i'm building a non-http GUI using Django.
>>>
>>>
>>>OK let's stay on the rendering issue only, and specify things
>>>simply.
>>>This is a simple description o

Re: Use Django to implement my GUI!

[Eugène Ngontang]

Ok!
But it's not so complited to understand.
I will even send a diagram.
Le 16 mai 2012 13:50, "Marcin Tustin"  a écrit :

> A lot of people seem confused by your architecture. It might help if you
> provided a complete (but high-level) description of the architecture of the
> system in a single email.
>
> On Wed, May 16, 2012 at 12:47 PM, Eugène Ngontang wrote:
>
>> No i'm not inventing a server.
>> The application has a centrilzed server (module server installed on a
>> dedicated host
>> ).
>> The dispatches tasks to remote clients (the client module is installed on
>> each client host) and receives informations from clients about taks state.
>>
>> How would you like me to describe or call my app  components?
>> What is not clear for you in my architecture description?
>> How would you call my server module?
>> And i'm not saying the database is installed on the same machine as the
>> server, even if it could be.
>> But only the server can access database directly.
>>
>> If you like so, What i call server could stand for a central task
>> supervisor.
>>
>> Thanks for attention Jani.
>> Le 16 mai 2012 12:01, "Jani Tiainen"  a écrit :
>>
>> Hi,
>>>
>>> Like I said, it all depends what you have and what is the goal.
>>>
>>> You keep constantly talking about magical "server" that talks with the
>>> database. Is this server already existing piece of infrastructure that some
>>> programs already use and you like to hook up with that?
>>>
>>> Or is this server something that you just invented in lack of better
>>> knowledge?
>>>
>>> You talk about state changes (in example you give a task). Must those
>>> changes be reflected in "real time" between arbitrary clients? Or is it
>>> sufficient that client sees changes at some later point?
>>>
>>>
>>>
>>> 16.5.2012 3:30, Eugène Ngontang kirjoitti:
>>>
 Hi Jani!

 Now you can understand what i meant, but I'm not just try to mec things
 complicated.

 I'm not talking here about my technical implementation, but i'm
 describing the needs/contraints, and my app architecture to you.

 -  The remote clients are at the heart of the software system, since
 data stored in the database are destined to them (the server push each
 information to the corresponding host)
 - When a client starts, it trys to establish a connection with the
 server, and if succeed, it retrieves its informations from the server.
 The server then send back informations conerning the host executing the
 client (the way server retrieves informations from the data base manager
 doesn't matter here, it's a technical purpose)
 - When a task state changes, it has to notify the server by sending a
 packet through the network. The GUI (web browser) has then to display
 the new state.
 - When a user of the software wants to create a new task on a host, it
 uses the GUI for the purpose, and the information has to be sent to the
 remote corresponding client/host for processing.

 Tell in my place, what logic would you adopt. I would like idea from you
 guys in this case, before go on a first definitive choice.

 I can see web sockets solves so much problems for developpers, and i'm
 still looking if it could help achieve correctly what I want to. The
 problem of IE < 10 for the instance is not so important.

 Now also, can you try to advise me the best way for serving file using
 python-Django (apache, unicorn, ..)?

 Thanks again.

 2012/5/15 Jani Tiainen mailto:rede...@gmail.com>>

Hi,

Now it starts to make "sense".

I just wonder why are you trying to build something so extremely
complicated?

What is the rationale behind to have additional middleware layer
between web ui and the server backend?

Wouldn't it be sufficient to have architecture like:

Browser <-> django middleware <-> remote backend

Communication between django middle ware and remote backend should
be built on top of some messaging system, like celery + rabbitmq
which gives you quite standard asyncronous communication between
django middleware and remote backend. Of course you might need to
write some adapters on remote side but that's part of the job.

Only real problem is that if you need to push changes to browser
side. There doesn't exists any really good ways to do that. HTML5
was supposed to bring websockets to overcome the problem. One big
problem is that only from IE series only IE 10 supports it. All
others, FF, Chrome, Safari has had it for a good while.

There exists also alternative workarounds like Comet, BOSH, push and
few others.

So let
15.5.2012 2:18, Eugčne Ngontang kirjoitti:

Hi Jani!

I haven't seen the last statements of your post, whre

Re: Use Django to implement my GUI!

[Frank Stüss]

or maybe you might have a look at http://pyjs.org/ 
which could help you having an event aware client app in your browser.
Served by and with django.


Am Sonntag, den 13.05.2012, 17:14 +0400 schrieb Alireza Savand:
> No, i posted django-tastypie not tastypie itself and it's easy to use.
> Anyway if i'm implementing GUI based i would make it website, since
> it's an advantages of SaaS.
> But using client app[desktop-app] and a server-app[django] and having
> multiply client and ... makes maintaining like a nightmare.
> All i knew was that, Despite that you asked several question and i
> just claimed to help in one of them :D
> 
> On Sun, May 13, 2012 at 4:06 PM, Eugène Ngontang 
> wrote:
> Yes, I can see tastypie is a good service, that even support
> REST protocol.
> 
> But I'd firt basically implement my gui with django and when i
> will master well django, i could use tastypie, and turn my
> server to support REST, it will be a good thing.
> 
> But please let's keep using only django for the begining.
> 
> Thanks.
> 
> 
> 2012/5/13 Alireza Savand 
> https://github.com/toastdriven/django-tastypie
> 
> 
> On Sunday, May 13, 2012 2:14:36 PM UTC+4, Eugene
> NGONTANG wrote:
> Hi! 
> 
> I'm a python developper, but new in django. 
> 
> I'm devolopping a multi clients-server
> application. 
> 
> The server and the clients are communicating
> via sockets, The server 
> receive somme states from clients, and display
> them in the User 
> interface. 
> In the other hand, the server has to send a
> message(packet) to the 
> client when an event  occurs in the GUI, and
> data are stored in a 
> database. 
> 
> Then I choose to make a web interface where
> data could be viewed and 
> manipulated. And I discovered Django, which
> fit all my needs. I tested 
> and liked the framework. 
> 
> My questions are: 
> - Can I override the djando admin methods so
> that i can not only 
> customized my views and html page, but also
> manipulate objects in 
> database, so that i can do another action when
> catching an  event in 
> the GUi. 
> For example, taking the django admin tutorial,
> I would like to do and 
> action like sending a message the user choose
> "add a poll". How can I 
> do those things? Cause I noticed that method
> that alter data in data 
> base are part of django admin module and
> cannot be overriden 
> 
> - To achieve what I want, i would like to run
> my server engine and my 
> django admin in two separated threads. How do
> i run my admin module in 
> a thread? Cause till now i'm using the command
> line "python manage.py 
> runserver" 
> 
> - I also tried to overide tables name, and
> foreign keys names. Could 
> you guys provide me a true life example? 
> 
> - And now in the production step, I would like
> you guys to tell me 
> what to choose for serving files. I would like
> to with your experience 
> what's better between running a unicorn server
> or apache with mod_wsgi 
> 
> I don't know if i'm clear, but i hope. In
> brief I'd like to use the 
> django framework features to design my Gui
> like i want, customize 
> interactions between the gui and the backend,
> and choose a good web 
> server for the production. 
>   

Re: Use Django to implement my GUI!

[Alec Taylor]

On Wed, May 16, 2012 at 10:49 PM, Frank Stüss  wrote:
> or maybe you might have a look at http://pyjs.org/
> which could help you having an event aware client app in your browser.
> Served by and with django.

I'm impressed

(just read the exec summary from homepage)

>
> Am Sonntag, den 13.05.2012, 17:14 +0400 schrieb Alireza Savand:
>> No, i posted django-tastypie not tastypie itself and it's easy to use.
>> Anyway if i'm implementing GUI based i would make it website, since
>> it's an advantages of SaaS.
>> But using client app[desktop-app] and a server-app[django] and having
>> multiply client and ... makes maintaining like a nightmare.
>> All i knew was that, Despite that you asked several question and i
>> just claimed to help in one of them :D
>>
>> On Sun, May 13, 2012 at 4:06 PM, Eugène Ngontang 
>> wrote:
>>         Yes, I can see tastypie is a good service, that even support
>>         REST protocol.
>>
>>         But I'd firt basically implement my gui with django and when i
>>         will master well django, i could use tastypie, and turn my
>>         server to support REST, it will be a good thing.
>>
>>         But please let's keep using only django for the begining.
>>
>>         Thanks.
>>
>>
>>         2012/5/13 Alireza Savand 
>>                 https://github.com/toastdriven/django-tastypie
>>
>>
>>                 On Sunday, May 13, 2012 2:14:36 PM UTC+4, Eugene
>>                 NGONTANG wrote:
>>                         Hi!
>>
>>                         I'm a python developper, but new in django.
>>
>>                         I'm devolopping a multi clients-server
>>                         application.
>>
>>                         The server and the clients are communicating
>>                         via sockets, The server
>>                         receive somme states from clients, and display
>>                         them in the User
>>                         interface.
>>                         In the other hand, the server has to send a
>>                         message(packet) to the
>>                         client when an event  occurs in the GUI, and
>>                         data are stored in a
>>                         database.
>>
>>                         Then I choose to make a web interface where
>>                         data could be viewed and
>>                         manipulated. And I discovered Django, which
>>                         fit all my needs. I tested
>>                         and liked the framework.
>>
>>                         My questions are:
>>                         - Can I override the djando admin methods so
>>                         that i can not only
>>                         customized my views and html page, but also
>>                         manipulate objects in
>>                         database, so that i can do another action when
>>                         catching an  event in
>>                         the GUi.
>>                         For example, taking the django admin tutorial,
>>                         I would like to do and
>>                         action like sending a message the user choose
>>                         "add a poll". How can I
>>                         do those things? Cause I noticed that method
>>                         that alter data in data
>>                         base are part of django admin module and
>>                         cannot be overriden
>>
>>                         - To achieve what I want, i would like to run
>>                         my server engine and my
>>                         django admin in two separated threads. How do
>>                         i run my admin module in
>>                         a thread? Cause till now i'm using the command
>>                         line "python manage.py
>>                         runserver"
>>
>>                         - I also tried to overide tables name, and
>>                         foreign keys names. Could
>>                         you guys provide me a true life example?
>>
>>                         - And now in the production step, I would like
>>                         you guys to tell me
>>                         what to choose for serving files. I would like
>>                         to with your experience
>>                         what's better between running a unicorn server
>>                         or apache with mod_wsgi
>>
>>                         I don't know if i'm clear, but i hope. In
>>                         brief I'd like to use the
>>                         django framework features to design my Gui
>>                         like i want, customize
>>                         interactions between the gui and the backend,
>>                         and choose a good web
>>                         server for the production.
>>
>>                         Thank you for advance
>>
>>                 --
>>                 You received this message because you are subsc

Re: Use Django to implement my GUI!

[Alec Taylor]

Oh right, it's just Pyjamas.

Still, annoyed I didn't think to recommend it first!


On Thu, May 17, 2012 at 12:02 AM, Alec Taylor  wrote:
> On Wed, May 16, 2012 at 10:49 PM, Frank Stüss  wrote:
>> or maybe you might have a look at http://pyjs.org/
>> which could help you having an event aware client app in your browser.
>> Served by and with django.
>
> I'm impressed
>
> (just read the exec summary from homepage)
>
>>
>> Am Sonntag, den 13.05.2012, 17:14 +0400 schrieb Alireza Savand:
>>> No, i posted django-tastypie not tastypie itself and it's easy to use.
>>> Anyway if i'm implementing GUI based i would make it website, since
>>> it's an advantages of SaaS.
>>> But using client app[desktop-app] and a server-app[django] and having
>>> multiply client and ... makes maintaining like a nightmare.
>>> All i knew was that, Despite that you asked several question and i
>>> just claimed to help in one of them :D
>>>
>>> On Sun, May 13, 2012 at 4:06 PM, Eugène Ngontang 
>>> wrote:
>>>         Yes, I can see tastypie is a good service, that even support
>>>         REST protocol.
>>>
>>>         But I'd firt basically implement my gui with django and when i
>>>         will master well django, i could use tastypie, and turn my
>>>         server to support REST, it will be a good thing.
>>>
>>>         But please let's keep using only django for the begining.
>>>
>>>         Thanks.
>>>
>>>
>>>         2012/5/13 Alireza Savand 
>>>                 https://github.com/toastdriven/django-tastypie
>>>
>>>
>>>                 On Sunday, May 13, 2012 2:14:36 PM UTC+4, Eugene
>>>                 NGONTANG wrote:
>>>                         Hi!
>>>
>>>                         I'm a python developper, but new in django.
>>>
>>>                         I'm devolopping a multi clients-server
>>>                         application.
>>>
>>>                         The server and the clients are communicating
>>>                         via sockets, The server
>>>                         receive somme states from clients, and display
>>>                         them in the User
>>>                         interface.
>>>                         In the other hand, the server has to send a
>>>                         message(packet) to the
>>>                         client when an event  occurs in the GUI, and
>>>                         data are stored in a
>>>                         database.
>>>
>>>                         Then I choose to make a web interface where
>>>                         data could be viewed and
>>>                         manipulated. And I discovered Django, which
>>>                         fit all my needs. I tested
>>>                         and liked the framework.
>>>
>>>                         My questions are:
>>>                         - Can I override the djando admin methods so
>>>                         that i can not only
>>>                         customized my views and html page, but also
>>>                         manipulate objects in
>>>                         database, so that i can do another action when
>>>                         catching an  event in
>>>                         the GUi.
>>>                         For example, taking the django admin tutorial,
>>>                         I would like to do and
>>>                         action like sending a message the user choose
>>>                         "add a poll". How can I
>>>                         do those things? Cause I noticed that method
>>>                         that alter data in data
>>>                         base are part of django admin module and
>>>                         cannot be overriden
>>>
>>>                         - To achieve what I want, i would like to run
>>>                         my server engine and my
>>>                         django admin in two separated threads. How do
>>>                         i run my admin module in
>>>                         a thread? Cause till now i'm using the command
>>>                         line "python manage.py
>>>                         runserver"
>>>
>>>                         - I also tried to overide tables name, and
>>>                         foreign keys names. Could
>>>                         you guys provide me a true life example?
>>>
>>>                         - And now in the production step, I would like
>>>                         you guys to tell me
>>>                         what to choose for serving files. I would like
>>>                         to with your experience
>>>                         what's better between running a unicorn server
>>>                         or apache with mod_wsgi
>>>
>>>                         I don't know if i'm clear, but i hope. In
>>>                         brief I'd like to use the
>>>                         django framework features to design my Gui
>>>                         like i want, customize
>>>                         interactions between the gui and the backend,

Re: Use Django to implement my GUI!

[Alec Taylor]

Dde

That architecture diagram shows exactly your problem.

You are thinking about this problem incorrectly.

- Server: nginx [or whatever] with Django
- Client: web-browser
- Admin:  Client: web-browser

#done

On Fri, May 18, 2012 at 1:36 PM, Eugène Ngontang  wrote:
> Hi Guys!
>
> I've been busy a bit, I'm back to thread with the high level architecture.
> Attached here is a diagram, just to understand what i meant.
>
> Don't pay attention for object I use to describe modules or architecture
> components.
>
> Now you will be able to understand what I mean by the server module, the
> admin module, and the client module of my architecture.
>
> As you could see on the diagram, the admin module is installd on the
> server(where the server module is installed) and is destined to provide
> views to the GUI.
> The clients receive and send data to the server.
> When the admin make some actions, some clients are notifed, and when client
> send informations admin (GUi is notified).
>
> Now two things come in my mind when I was thinking :
>
> - First I could stay in the way I want the server to use HTTP for the admin
> side, and another protocol to communicate with client. In that way the Admin
> Module (Django) will alter and read data from data base. and the server
> module will alter and read data from database. Then each information
> retrievement will lead in reading database since informations could have
> been changed. You can that's really heavy.
>
> - Second do all things in http. Mean that my server is just a web
> application undertanding HTTP (I will the use django for that). The server
> will serve request depending on the type of request, and each client will
> communicate with the server using HTTP.  Then server will define pages/urls
> for admin (to be sent to the GUI), and pages/urls  for clients.
> By this way, the only relation between my modules will be the protocol (HTTP
> for the instance) and they could be implemented in what ever language we
> like. The sever will run asynchronously for admin and clients.
>   The admin will then be just an interface to wich convert data to the right
> display format for the GUI. And the GUI could be any type, and for the web
> interface type I will use DJANGO for my Admin module.
>    I will then also have to develop a http client for my client module.
>
> Actuallu I'm going to take the second choice, since it lets all the charge
> for read and write database to the server, which could run and publish
> informations asynchronously(websocket could help here).
>
> I precise that I'm not a web architect or designer, but i understand
> software architecture. I'm really a system and network engineer, with good
> developpement skill but not to much in web.
>
> Look now my architecture diagram and tell me if what I'm describing in the
> second item fit. And give idea if you have, about libraiies and or framwork
> that could help going fast and easy.
> I thing I will use django and green unicorn.
>
> Thanks for your attention.
>
>
>
> 2012/5/16 Alec Taylor 
>>
>> Oh right, it's just Pyjamas.
>>
>> Still, annoyed I didn't think to recommend it first!
>>
>>
>> On Thu, May 17, 2012 at 12:02 AM, Alec Taylor 
>> wrote:
>> > On Wed, May 16, 2012 at 10:49 PM, Frank Stüss 
>> > wrote:
>> >> or maybe you might have a look at http://pyjs.org/
>> >> which could help you having an event aware client app in your browser.
>> >> Served by and with django.
>> >
>> > I'm impressed
>> >
>> > (just read the exec summary from homepage)
>> >
>> >>
>> >> Am Sonntag, den 13.05.2012, 17:14 +0400 schrieb Alireza Savand:
>> >>> No, i posted django-tastypie not tastypie itself and it's easy to use.
>> >>> Anyway if i'm implementing GUI based i would make it website, since
>> >>> it's an advantages of SaaS.
>> >>> But using client app[desktop-app] and a server-app[django] and having
>> >>> multiply client and ... makes maintaining like a nightmare.
>> >>> All i knew was that, Despite that you asked several question and i
>> >>> just claimed to help in one of them :D
>> >>>
>> >>> On Sun, May 13, 2012 at 4:06 PM, Eugène Ngontang 
>> >>> wrote:
>> >>>         Yes, I can see tastypie is a good service, that even support
>> >>>         REST protocol.
>> >>>
>> >>>         But I'd firt basically implement my gui with django and when i
>> >>>         will master well django, i could use tastypie, and turn my
>> >>>         server to support REST, it will be a good thing.
>> >>>
>> >>>         But please let's keep using only django for the begining.
>> >>>
>> >>>         Thanks.
>> >>>
>> >>>
>> >>>         2012/5/13 Alireza Savand 
>> >>>                 https://github.com/toastdriven/django-tastypie
>> >>>
>> >>>
>> >>>                 On Sunday, May 13, 2012 2:14:36 PM UTC+4, Eugene
>> >>>                 NGONTANG wrote:
>> >>>                         Hi!
>> >>>
>> >>>                         I'm a python developper, but new in django.
>> >>>
>> >>>                         I'm devolopping a m

Re: Use Django to implement my GUI!

[Kurtis Mullins]

If you're dead set on using a non-browser GUI for the administration
application, just use the HTTP Protocol for your communications between the
Django Server and whatever Desktop Application you build. However, if you
can just use a web browser for that (even if it's a Qt browser or something
that looks like a desktop application, as others have mentioned) then your
life will be a lot easier.

On Fri, May 18, 2012 at 9:33 PM, Alec Taylor  wrote:

> Dde
>
> That architecture diagram shows exactly your problem.
>
> You are thinking about this problem incorrectly.
>
> - Server: nginx [or whatever] with Django
> - Client: web-browser
> - Admin:  Client: web-browser
>
> #done
>
> On Fri, May 18, 2012 at 1:36 PM, Eugène Ngontang 
> wrote:
> > Hi Guys!
> >
> > I've been busy a bit, I'm back to thread with the high level
> architecture.
> > Attached here is a diagram, just to understand what i meant.
> >
> > Don't pay attention for object I use to describe modules or architecture
> > components.
> >
> > Now you will be able to understand what I mean by the server module, the
> > admin module, and the client module of my architecture.
> >
> > As you could see on the diagram, the admin module is installd on the
> > server(where the server module is installed) and is destined to provide
> > views to the GUI.
> > The clients receive and send data to the server.
> > When the admin make some actions, some clients are notifed, and when
> client
> > send informations admin (GUi is notified).
> >
> > Now two things come in my mind when I was thinking :
> >
> > - First I could stay in the way I want the server to use HTTP for the
> admin
> > side, and another protocol to communicate with client. In that way the
> Admin
> > Module (Django) will alter and read data from data base. and the server
> > module will alter and read data from database. Then each information
> > retrievement will lead in reading database since informations could have
> > been changed. You can that's really heavy.
> >
> > - Second do all things in http. Mean that my server is just a web
> > application undertanding HTTP (I will the use django for that). The
> server
> > will serve request depending on the type of request, and each client will
> > communicate with the server using HTTP.  Then server will define
> pages/urls
> > for admin (to be sent to the GUI), and pages/urls  for clients.
> > By this way, the only relation between my modules will be the protocol
> (HTTP
> > for the instance) and they could be implemented in what ever language we
> > like. The sever will run asynchronously for admin and clients.
> >   The admin will then be just an interface to wich convert data to the
> right
> > display format for the GUI. And the GUI could be any type, and for the
> web
> > interface type I will use DJANGO for my Admin module.
> >I will then also have to develop a http client for my client module.
> >
> > Actuallu I'm going to take the second choice, since it lets all the
> charge
> > for read and write database to the server, which could run and publish
> > informations asynchronously(websocket could help here).
> >
> > I precise that I'm not a web architect or designer, but i understand
> > software architecture. I'm really a system and network engineer, with
> good
> > developpement skill but not to much in web.
> >
> > Look now my architecture diagram and tell me if what I'm describing in
> the
> > second item fit. And give idea if you have, about libraiies and or
> framwork
> > that could help going fast and easy.
> > I thing I will use django and green unicorn.
> >
> > Thanks for your attention.
> >
> >
> >
> > 2012/5/16 Alec Taylor 
> >>
> >> Oh right, it's just Pyjamas.
> >>
> >> Still, annoyed I didn't think to recommend it first!
> >>
> >>
> >> On Thu, May 17, 2012 at 12:02 AM, Alec Taylor 
> >> wrote:
> >> > On Wed, May 16, 2012 at 10:49 PM, Frank Stüss  >
> >> > wrote:
> >> >> or maybe you might have a look at http://pyjs.org/
> >> >> which could help you having an event aware client app in your
> browser.
> >> >> Served by and with django.
> >> >
> >> > I'm impressed
> >> >
> >> > (just read the exec summary from homepage)
> >> >
> >> >>
> >> >> Am Sonntag, den 13.05.2012, 17:14 +0400 schrieb Alireza Savand:
> >> >>> No, i posted django-tastypie not tastypie itself and it's easy to
> use.
> >> >>> Anyway if i'm implementing GUI based i would make it website, since
> >> >>> it's an advantages of SaaS.
> >> >>> But using client app[desktop-app] and a server-app[django] and
> having
> >> >>> multiply client and ... makes maintaining like a nightmare.
> >> >>> All i knew was that, Despite that you asked several question and i
> >> >>> just claimed to help in one of them :D
> >> >>>
> >> >>> On Sun, May 13, 2012 at 4:06 PM, Eugène Ngontang <
> sympav...@gmail.com>
> >> >>> wrote:
> >> >>> Yes, I can see tastypie is a good service, that even support
> >> >>> REST protocol.
> >> >>>
> >> >>> But I'd firt basic

Re: Use Django to implement my GUI!

[Kurtis Mullins]

>
> My questions are:
> - Can I override the djando admin methods so that i can not only
> customized my views and html page, but also manipulate objects in
> database, so that i can do another action when catching an  event in
> the GUi.


Anything that can be done with Django's Admin interface can be done
programmatically. If you choose to use a custom administration application
(for example, your Desktop Application) then you'll need to provide some
sort of an API over some sort of a Protocol (I vote HTTP). The easiest to
implement, in my opinion, is just using HTTP Methods (POST, GET, DELETE,
etc...) with proper HTTP Responses (200 OK, 404 Missing, etc...) and some
sort of a standard data-format (JSON, XML) as the Response Content when
sending data back and forth.

For example, taking the django admin tutorial, I would like to do and
> action like sending a message the user choose "add a poll". How can I
> do those things? Cause I noticed that method that alter data in data
> base are part of django admin module and cannot be overriden


I'm not sure if I understand you correctly, here. You can use signals to
fire off an event when a user saves an object. If you want to display a
message to a user (e.g. "Your new poll has been created") then use the
Django Messaging Framework. If the default admininstration application
doesn't do what you need and it's not flexible enough to do what you want
-- then don't fight it, write your own Views and Model Methods to perform
this behavior.

- To achieve what I want, i would like to run my server engine and my
> django admin in two separated threads. How do i run my admin module in
> a thread? Cause till now i'm using the command line "python manage.py
> runserver"


If you want to run the two as completely separate applications, simply take
two copies of your code-base and disable 'Admin' in one. Don't use Django's
runserver as a production server -- I'm sure others have already pointed
out (as well as the documentation) that it's not designed for that purpose.
Instead, use Nginx + uWSGI, Nginx + gunicorn, or even Apache for a
lower-traffic site.

 - I also tried to overide tables name, and foreign keys names. Could
> you guys provide me a true life example?


Override a table name:
https://docs.djangoproject.com/en/dev/ref/models/options/#table-names
Override foreign key name(s): Not really sure what you are asking here.

- And now in the production step, I would like you guys to tell me
> what to choose for serving files. I would like to with your experience
> what's better between running a unicorn server or apache with mod_wsgi


I use Nginx + uWSGI. There's plenty of sites out there that give you more
information on the subject. I chose this option because it's scalable, I've
got the configuration figured out, and it's pretty efficient and
lightweight.

I don't know if i'm clear, but i hope. In brief I'd like to use the
> django framework features to design my Gui like i want, customize
> interactions between the gui and the backend, and choose a good web
> server for the production.


>From your diagram you posted later-on, I think Django will work just fine
for your purpose. Just take it one step at a time and bulid it iteratively.
Break the whole architecture down into smaller pieces and tackle them one
at a time. You will learn a lot and will have a lot of fun doing it. Django
is a great framework to use and it's always been a pleasure for me except
the first month where there was *so many features* it was hard to pick a
place and go. Following the tutorials, as it appears you have done, is a
great way to start and you can learn more as you start to dive in deeper
and write more exciting code.

Good luck to you!

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Re: Use Django to implement my GUI!

[Jani Tiainen]

Hi,

By looking your diagram it's still the same as you described in your
earlier mails. So it doesn't help at all. :)

1) Is your server something that exists and is used in everyday life or is
it something that you're going to build?

2) Are your clients something that already exists and is used in everyday
life?

3) Are you now trying to figure out how to plug in Django in "Adming
module/PC with GUI block"?


On Fri, May 18, 2012 at 6:36 AM, Eugène Ngontang wrote:

> Hi Guys!
>
> I've been busy a bit, I'm back to thread with the high level architecture.
> Attached here is a diagram, just to understand what i meant.
>
> Don't pay attention for object I use to describe modules or architecture
> components.
>
> Now you will be able to understand what I mean by the server module, the
> admin module, and the client module of my architecture.
>
> As you could see on the diagram, the admin module is installd on the
> server(where the server module is installed) and is destined to provide
> views to the GUI.
> The clients receive and send data to the server.
> When the admin make some actions, some clients are notifed, and when
> client send informations admin (GUi is notified).
>
> Now two things come in my mind when I was thinking :
>
> - First I could stay in the way I want the server to use HTTP for the
> admin side, and another protocol to communicate with client. In that way
> the Admin Module (Django) will alter and read data from data base. and the
> server module will alter and read data from database. Then each information
> retrievement will lead in reading database since informations could have
> been changed. You can that's really heavy.
>
> - Second do all things in http. Mean that my server is just a web
> application undertanding HTTP (I will the use django for that). The server
> will serve request depending on the type of request, and each client will
> communicate with the server using HTTP.  Then server will define pages/urls
> for admin (to be sent to the GUI), and pages/urls  for clients.
> By this way, the only relation between my modules will be the protocol
> (HTTP for the instance) and they could be implemented in what ever language
> we like. The sever will run asynchronously for admin and clients.
>   The admin will then be just an interface to wich convert data to the
> right display format for the GUI. And the GUI could be any type, and for
> the web interface type I will use DJANGO for my Admin module.
>I will then also have to develop a http client for my client module.
>
> Actuallu I'm going to take the second choice, since it lets all the charge
> for read and write database to the server, which could run and publish
> informations asynchronously(websocket could help here).
>
> I precise that I'm not a web architect or designer, but i understand
> software architecture. I'm really a system and network engineer, with good
> developpement skill but not to much in web.
>
> Look now my architecture diagram and tell me if what I'm describing in the
> second item fit. And give idea if you have, about libraiies and or framwork
> that could help going fast and easy.
> I thing I will use django and green unicorn.
>
> Thanks for your attention.
>
>
>
> 2012/5/16 Alec Taylor 
>
>> Oh right, it's just Pyjamas.
>>
>> Still, annoyed I didn't think to recommend it first!
>>
>>
>> On Thu, May 17, 2012 at 12:02 AM, Alec Taylor 
>> wrote:
>> > On Wed, May 16, 2012 at 10:49 PM, Frank Stüss 
>> wrote:
>> >> or maybe you might have a look at http://pyjs.org/
>> >> which could help you having an event aware client app in your browser.
>> >> Served by and with django.
>> >
>> > I'm impressed
>> >
>> > (just read the exec summary from homepage)
>> >
>> >>
>> >> Am Sonntag, den 13.05.2012, 17:14 +0400 schrieb Alireza Savand:
>> >>> No, i posted django-tastypie not tastypie itself and it's easy to use.
>> >>> Anyway if i'm implementing GUI based i would make it website, since
>> >>> it's an advantages of SaaS.
>> >>> But using client app[desktop-app] and a server-app[django] and having
>> >>> multiply client and ... makes maintaining like a nightmare.
>> >>> All i knew was that, Despite that you asked several question and i
>> >>> just claimed to help in one of them :D
>> >>>
>> >>> On Sun, May 13, 2012 at 4:06 PM, Eugène Ngontang > >
>> >>> wrote:
>> >>> Yes, I can see tastypie is a good service, that even support
>> >>> REST protocol.
>> >>>
>> >>> But I'd firt basically implement my gui with django and when i
>> >>> will master well django, i could use tastypie, and turn my
>> >>> server to support REST, it will be a good thing.
>> >>>
>> >>> But please let's keep using only django for the begining.
>> >>>
>> >>> Thanks.
>> >>>
>> >>>
>> >>> 2012/5/13 Alireza Savand 
>> >>> https://github.com/toastdriven/django-tastypie
>> >>>
>> >>>
>> >>> On Sunday, May 13, 2012 2:14:36 PM UTC+4, Eugene
>> >>>   

Re: Use Django to implement my GUI!

[Eugène Ngontang]

When you're asking if my client/server already exist. You're talking about
physical machines or applications/modules?

- the machines where client module will run already exist and are used
dayly. The client module will just be installed there and do what it has to
do.
- every body knows the browser/gui can be found and run anywhere.
- Now the server machine where the web server should be running and the
admin module will be deployed is a dedicated machine that should be set up
specially for the project.
- the database could be on a separated machine or anywhere, it doesn't
matter.

I don't know why you still don't understand Jani. The physical architecture
is simple and i described it.

And i was saying all will now be done in http. I just have to make my
admin(browser) notified asynchronously, as well as my clients (i know i
should avoid distinguish them from the gui/browser but it's for make things
clear)

See you.
Le 19 mai 2012 08:09, "Jani Tiainen"  a écrit :

> Hi,
>
> By looking your diagram it's still the same as you described in your
> earlier mails. So it doesn't help at all. :)
>
> 1) Is your server something that exists and is used in everyday life or is
> it something that you're going to build?
>
> 2) Are your clients something that already exists and is used in everyday
> life?
>
> 3) Are you now trying to figure out how to plug in Django in "Adming
> module/PC with GUI block"?
>
>
> On Fri, May 18, 2012 at 6:36 AM, Eugène Ngontang wrote:
>
>> Hi Guys!
>>
>> I've been busy a bit, I'm back to thread with the high level
>> architecture. Attached here is a diagram, just to understand what i meant.
>>
>> Don't pay attention for object I use to describe modules or architecture
>> components.
>>
>> Now you will be able to understand what I mean by the server module, the
>> admin module, and the client module of my architecture.
>>
>> As you could see on the diagram, the admin module is installd on the
>> server(where the server module is installed) and is destined to provide
>> views to the GUI.
>> The clients receive and send data to the server.
>> When the admin make some actions, some clients are notifed, and when
>> client send informations admin (GUi is notified).
>>
>> Now two things come in my mind when I was thinking :
>>
>> - First I could stay in the way I want the server to use HTTP for the
>> admin side, and another protocol to communicate with client. In that way
>> the Admin Module (Django) will alter and read data from data base. and the
>> server module will alter and read data from database. Then each information
>> retrievement will lead in reading database since informations could have
>> been changed. You can that's really heavy.
>>
>> - Second do all things in http. Mean that my server is just a web
>> application undertanding HTTP (I will the use django for that). The server
>> will serve request depending on the type of request, and each client will
>> communicate with the server using HTTP.  Then server will define pages/urls
>> for admin (to be sent to the GUI), and pages/urls  for clients.
>> By this way, the only relation between my modules will be the protocol
>> (HTTP for the instance) and they could be implemented in what ever language
>> we like. The sever will run asynchronously for admin and clients.
>>   The admin will then be just an interface to wich convert data to the
>> right display format for the GUI. And the GUI could be any type, and for
>> the web interface type I will use DJANGO for my Admin module.
>>I will then also have to develop a http client for my client module.
>>
>> Actuallu I'm going to take the second choice, since it lets all the
>> charge for read and write database to the server, which could run and
>> publish informations asynchronously(websocket could help here).
>>
>> I precise that I'm not a web architect or designer, but i understand
>> software architecture. I'm really a system and network engineer, with good
>> developpement skill but not to much in web.
>>
>> Look now my architecture diagram and tell me if what I'm describing in
>> the second item fit. And give idea if you have, about libraiies and or
>> framwork that could help going fast and easy.
>> I thing I will use django and green unicorn.
>>
>> Thanks for your attention.
>>
>>
>>
>> 2012/5/16 Alec Taylor 
>>
>>> Oh right, it's just Pyjamas.
>>>
>>> Still, annoyed I didn't think to recommend it first!
>>>
>>>
>>> On Thu, May 17, 2012 at 12:02 AM, Alec Taylor 
>>> wrote:
>>> > On Wed, May 16, 2012 at 10:49 PM, Frank Stüss 
>>> wrote:
>>> >> or maybe you might have a look at http://pyjs.org/
>>> >> which could help you having an event aware client app in your browser.
>>> >> Served by and with django.
>>> >
>>> > I'm impressed
>>> >
>>> > (just read the exec summary from homepage)
>>> >
>>> >>
>>> >> Am Sonntag, den 13.05.2012, 17:14 +0400 schrieb Alireza Savand:
>>> >>> No, i posted django-tastypie not tastypie itself and it's easy to
>>> use.
>>> >>> Anyway if i'm imple

Re: Use Django to implement my GUI!

[Eugène Ngontang]

Hi Jani.
I don't know why you say
" 3) Are you now trying to figure out how to plug in Django in "Adming
module/PC with GUI block"?"

My admin module and the gui do not share anything. They are not on the same
pc.
Gui is for displaying and admin for the page content management like any
web aplication works.

I please us unot to build a myster arround this thread. The problem was
simple:
I wanted my server to asynchronously manage web pages for views, and remote
dustributed clients (like in the diagram) using tcp/udp sockets.
Now all communications will be done in http and any client will use this
protocol (web browser or my app client module).
The server (a http server) will then just use an admin module based on
django.

That's the way were going to do. Now, if you have advises concerning this
impletation give them to please.
Thanks.
Le 19 mai 2012 11:38, "Eugène Ngontang"  a écrit :

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Re: Use Django to implement my GUI!

[Eugène Ngontang]

Hi Jani.
I don't know why you say
" 3) Are you now trying to figure out how to plug in Django in "Adming
module/PC with GUI block"?"

My admin module and the gui do not share anything. They are not on the same
pc.
Gui is for displaying and admin for the page content management as any
Le 19 mai 2012 11:38, "Eugène Ngontang"  a écrit :

> When you're asking if my client/server already exist. You're talking about
> physical machines or applications/modules?
>
> - the machines where client module will run already exist and are used
> dayly. The client module will just be installed there and do what it has to
> do.
> - every body knows the browser/gui can be found and run anywhere.
> - Now the server machine where the web server should be running and the
> admin module will be deployed is a dedicated machine that should be set up
> specially for the project.
> - the database could be on a separated machine or anywhere, it doesn't
> matter.
>
> I don't know why you still don't understand Jani. The physical
> architecture is simple and i described it.
>
> And i was saying all will now be done in http. I just have to make my
> admin(browser) notified asynchronously, as well as my clients (i know i
> should avoid distinguish them from the gui/browser but it's for make things
> clear)
>
> See you.
> Le 19 mai 2012 08:09, "Jani Tiainen"  a écrit :
>
>> Hi,
>>
>> By looking your diagram it's still the same as you described in your
>> earlier mails. So it doesn't help at all. :)
>>
>> 1) Is your server something that exists and is used in everyday life or
>> is it something that you're going to build?
>>
>> 2) Are your clients something that already exists and is used in everyday
>> life?
>>
>> 3) Are you now trying to figure out how to plug in Django in "Adming
>> module/PC with GUI block"?
>>
>>
>> On Fri, May 18, 2012 at 6:36 AM, Eugène Ngontang wrote:
>>
>>> Hi Guys!
>>>
>>> I've been busy a bit, I'm back to thread with the high level
>>> architecture. Attached here is a diagram, just to understand what i meant.
>>>
>>> Don't pay attention for object I use to describe modules or architecture
>>> components.
>>>
>>> Now you will be able to understand what I mean by the server module, the
>>> admin module, and the client module of my architecture.
>>>
>>> As you could see on the diagram, the admin module is installd on the
>>> server(where the server module is installed) and is destined to provide
>>> views to the GUI.
>>> The clients receive and send data to the server.
>>> When the admin make some actions, some clients are notifed, and when
>>> client send informations admin (GUi is notified).
>>>
>>> Now two things come in my mind when I was thinking :
>>>
>>> - First I could stay in the way I want the server to use HTTP for the
>>> admin side, and another protocol to communicate with client. In that way
>>> the Admin Module (Django) will alter and read data from data base. and the
>>> server module will alter and read data from database. Then each information
>>> retrievement will lead in reading database since informations could have
>>> been changed. You can that's really heavy.
>>>
>>> - Second do all things in http. Mean that my server is just a web
>>> application undertanding HTTP (I will the use django for that). The server
>>> will serve request depending on the type of request, and each client will
>>> communicate with the server using HTTP.  Then server will define pages/urls
>>> for admin (to be sent to the GUI), and pages/urls  for clients.
>>> By this way, the only relation between my modules will be the protocol
>>> (HTTP for the instance) and they could be implemented in what ever language
>>> we like. The sever will run asynchronously for admin and clients.
>>>   The admin will then be just an interface to wich convert data to the
>>> right display format for the GUI. And the GUI could be any type, and for
>>> the web interface type I will use DJANGO for my Admin module.
>>>I will then also have to develop a http client for my client module.
>>>
>>> Actuallu I'm going to take the second choice, since it lets all the
>>> charge for read and write database to the server, which could run and
>>> publish informations asynchronously(websocket could help here).
>>>
>>> I precise that I'm not a web architect or designer, but i understand
>>> software architecture. I'm really a system and network engineer, with good
>>> developpement skill but not to much in web.
>>>
>>> Look now my architecture diagram and tell me if what I'm describing in
>>> the second item fit. And give idea if you have, about libraiies and or
>>> framwork that could help going fast and easy.
>>> I thing I will use django and green unicorn.
>>>
>>> Thanks for your attention.
>>>
>>>
>>>
>>> 2012/5/16 Alec Taylor 
>>>
 Oh right, it's just Pyjamas.

 Still, annoyed I didn't think to recommend it first!


 On Thu, May 17, 2012 at 12:02 AM, Alec Taylor 
 wrote:
 > On Wed, May 16, 2012 at 10:49 PM, Frank

Re: Use Django to implement my GUI!

[Marc Aymerich]

On Sat, May 19, 2012 at 8:01 PM, Eugène Ngontang  wrote:
> Hi Jani.
> I don't know why you say
>
> " 3) Are you now trying to figure out how to plug in Django in "Adming
> module/PC with GUI block"?"
>
> My admin module and the gui do not share anything. They are not on the same
> pc.
> Gui is for displaying and admin for the page content management like any web
> aplication works.
>
> I please us unot to build a myster arround this thread. The problem was
> simple:


HI Eugène,
the problem was simple, but all we have misunderstood you because
usually the term GUI is used to refer "desktop application" rather
than a web page, which seems to be the case.

br
-- 
Marc

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Re: Use Django to implement my GUI!

[Eugène Ngontang]

Yes you're right Marc!

It's just that I wanted to mention the fact my application is not only a
web site accessible via a web browser only, but a client-server application
with web-based GUI.

But now things are clear, we're all now ok with the problematic and with
your help and great responses, i noticed it's better to do all my system
communication based on HTTP.

I thank you for all your attention, all new ideas are still well come, and
i'll let you follow up the evelution of the development.

Thanks guys.



2012/5/20 Marc Aymerich 

> On Sat, May 19, 2012 at 8:01 PM, Eugène Ngontang 
> wrote:
> > Hi Jani.
> > I don't know why you say
> >
> > " 3) Are you now trying to figure out how to plug in Django in "Adming
> > module/PC with GUI block"?"
> >
> > My admin module and the gui do not share anything. They are not on the
> same
> > pc.
> > Gui is for displaying and admin for the page content management like any
> web
> > aplication works.
> >
> > I please us unot to build a myster arround this thread. The problem was
> > simple:
>
>
> HI Eugène,
> the problem was simple, but all we have misunderstood you because
> usually the term GUI is used to refer "desktop application" rather
> than a web page, which seems to be the case.
>
> br
> --
> Marc
>
> --
> You received this message because you are subscribed to the Google Groups
> "Django users" group.
> To post to this group, send email to django-users@googlegroups.com.
> To unsubscribe from this group, send email to
> django-users+unsubscr...@googlegroups.com.
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>
>


-- 
ngont...@epitech.net
sympav...@gmail.com

*Aux hommes il faut un chef, et au** chef il faut des hommes!*

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Re: Use Django to implement my GUI!

[Eugène Ngontang]

Hi all!

Hope you still remember this post which helps dive into django. I have gone
really ahead with my developments, and now i'm willing to make some
optimization and have some few issues. I don't know if I should open a new
thread for each one. You will tell me, but I prefered to do it here because
the initial thread was this one.

- First I can't use the HttpResponseRedirect() method in my application, it
does not work like it should. In fact in my models module, I have a
JobHistory class and a member function in that class which returns a link
for the listdisplay of that model in the admin module.
But when the id i'm looking for in the database does not exist, i would
like to redirect the user to a custum error page. And to that I used
HttpResponseRedirect() wich is unable to return the right address to the
browser. I tried such things, read the documentation several times but
nothing. I thought it was the reverse function which does not locate the
page but no, because even with google address the browser receive a
response address with some headers concatanated, and the browser cannot
access the page, cause it has an invalid address:
the code line in the models module:
def get_executing_user_url(self):
user_list = SystemUser.objects.filter(systemuser_name =
self.job_executing_user, host = self.job.host)
if not user_list:
return HttpResponse('http://www.google.com/')
#return HttpResponseRedirect('10.136.37.19:8080%s/'
% reverse('fancycron.views.job_exec_user_error',
args=(self.jobhistory_id,)))
else:
return '../systemuser/%s/' %
(user_list[0].systemuser_id)

You can see I've even tried to hardput the server address, but it did not
work, and I even tested with google and it didn't work too. Tell me if I
missed something in the use of HttpResponseRedirect. The error is not a
django error, but the returned address is just not accessible each any time
i try.

- The second issue is that I have implement my middleware (django) and
remote backend communication using django signals. It works, but as you can
expected, it's synchronous, and I would like now to do it asynchronously.
Is Celery the best option? If yes, could you please indicate me the
simplest and efficient way to set that up? Anyway, ho can I send messages
to my remote backend, without block in my browser rendering?

Some good and working tutorials are welcome.

Thank you a lot guys.
Eugène NG

2012/5/20 Eugène Ngontang 

> Yes you're right Marc!
>
> It's just that I wanted to mention the fact my application is not only a
> web site accessible via a web browser only, but a client-server application
> with web-based GUI.
>
> But now things are clear, we're all now ok with the problematic and with
> your help and great responses, i noticed it's better to do all my system
> communication based on HTTP.
>
> I thank you for all your attention, all new ideas are still well come, and
> i'll let you follow up the evelution of the development.
>
> Thanks guys.
>
>
>
>
> 2012/5/20 Marc Aymerich 
>
>> On Sat, May 19, 2012 at 8:01 PM, Eugène Ngontang 
>> wrote:
>> > Hi Jani.
>> > I don't know why you say
>> >
>> > " 3) Are you now trying to figure out how to plug in Django in "Adming
>> > module/PC with GUI block"?"
>> >
>> > My admin module and the gui do not share anything. They are not on the
>> same
>> > pc.
>> > Gui is for displaying and admin for the page content management like
>> any web
>> > aplication works.
>> >
>> > I please us unot to build a myster arround this thread. The problem was
>> > simple:
>>
>>
>> HI Eugène,
>> the problem was simple, but all we have misunderstood you because
>> usually the term GUI is used to refer "desktop application" rather
>> than a web page, which seems to be the case.
>>
>> br
>> --
>> Marc
>>
>> --
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>>
>>
>
>
> --
> ngont...@epitech.net
> sympav...@gmail.com
> 
> *Aux hommes il faut un chef, et au** chef il faut des hommes!*
>
>


-- 
ngont...@epitech.net
sympav...@gmail.com

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L'habit ne fait pas le moine, mais lorsqu'on te voit on te juge!
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Re: Use Django to implement my GUI!

[Eugène Ngontang]

Ok!

I think several times and solved the problem.

In fact I think the admin was waiting an address to build the http response
it self, not really a http response.

I remove the HttpResponse or HttpResponseRedirect method  from the return
statement, and it worked as I expected.

The wrong code line :
   *#return HttpResponseRedirect('10.136.37.19:8080%s/'
% reverse 'app.views.job_exec_user_error', args=(self.jobhistory_id,)))   *

The correct code line :
   #return (reverse('app.views.job_exec_user_error',
args=(self.jobhistory_id,)))

Now I'm dealing whith asyncronous communications.



2012/7/16 Eugène Ngontang 

> Hi!
>
> To complete my HttpResponseRedirect issue, here is a screenshot i have
> when clinking on the link.
>
> The browser does not know the page content type, and I don't see the to
> set the content type with HttpResponseRedirect method, cause it takes only
> one argument, which is the address to redirect to.
>
> Thank for advance for your answer.
>
> 2012/7/15 Eugène Ngontang 
>
>> Hi all!
>>
>> Hope you still remember this post which helps dive into django. I have
>> gone really ahead with my developments, and now i'm willing to make some
>> optimization and have some few issues. I don't know if I should open a new
>> thread for each one. You will tell me, but I prefered to do it here because
>> the initial thread was this one.
>>
>> - First I can't use the HttpResponseRedirect() method in my application,
>> it does not work like it should. In fact in my models module, I have a
>> JobHistory class and a member function in that class which returns a link
>> for the listdisplay of that model in the admin module.
>> But when the id i'm looking for in the database does not exist, i would
>> like to redirect the user to a custum error page. And to that I used
>> HttpResponseRedirect() wich is unable to return the right address to the
>> browser. I tried such things, read the documentation several times but
>> nothing. I thought it was the reverse function which does not locate the
>> page but no, because even with google address the browser receive a
>> response address with some headers concatanated, and the browser cannot
>> access the page, cause it has an invalid address:
>> the code line in the models module:
>> def get_executing_user_url(self):
>> user_list = SystemUser.objects.filter(systemuser_name =
>> self.job_executing_user, host = self.job.host)
>> if not user_list:
>>  return HttpResponseRedirect('
>> http://www.google.com/')
>>
>> #return HttpResponseRedirect('10.136.37.19:8080%s/'
>> % reverse('fancycron.views.job_exec_user_error',
>> args=(self.jobhistory_id,)))
>> else:
>> return '../systemuser/%s/' %
>> (user_list[0].systemuser_id)
>>
>> You can see I've even tried to hardput the server address, but it did not
>> work, and I even tested with google and it didn't work too. Tell me if I
>> missed something in the use of HttpResponseRedirect. The error is not a
>> django error, but the returned address is just not accessible each any time
>> i try.
>>
>> - The second issue is that I have implement my middleware (django) and
>> remote backend communication using django signals. It works, but as you can
>> expected, it's synchronous, and I would like now to do it asynchronously.
>> Is Celery the best option? If yes, could you please indicate me the
>> simplest and efficient way to set that up? Anyway, ho can I send messages
>> to my remote backend, without block in my browser rendering?
>>
>> Some good and working tutorials are welcome.
>>
>> Thank you a lot guys.
>> Eugène NG
>>
>>
>> 2012/5/20 Eugène Ngontang 
>>
>>> Yes you're right Marc!
>>>
>>> It's just that I wanted to mention the fact my application is not only a
>>> web site accessible via a web browser only, but a client-server application
>>> with web-based GUI.
>>>
>>> But now things are clear, we're all now ok with the problematic and with
>>> your help and great responses, i noticed it's better to do all my system
>>> communication based on HTTP.
>>>
>>> I thank you for all your attention, all new ideas are still well come,
>>> and i'll let you follow up the evelution of the development.
>>>
>>> Thanks guys.
>>>
>>>
>>>
>>>
>>> 2012/5/20 Marc Aymerich 
>>>
 On Sat, May 19, 2012 at 8:01 PM, Eugène Ngontang 
 wrote:
 > Hi Jani.
 > I don't know why you say
 >
 > " 3) Are you now trying to figure out how to plug in Django in "Adming
 > module/PC with GUI block"?"
 >
 > My admin module and the gui do not share anything. They are not on
 the same
 > pc.
 > Gui is for displaying and admin for the page content management like
 any web
 > aplication works.
 >
 > I please us unot to build a myster arround this thread. The problem
 was
 > simple:


 HI Eugène,
 the problem wa