Re: Running django on demand via my PyQt4 Standalone app

[Mario R. Osorio]

I used to do home automation, so I know you need an interface with very
high "WOW!" factor AND PORTABILITY. That is why I proposed you check kivy (
http://kivy.org). kivy is the kick-ass interface I'd use, bar none.

this of course my opinion and recomendation, but you know YAHOO.



Dtb/Gby
===
Mario R. Osorio
A.S. of Computer Programming and Analysis
Web page: *http;//mario.osorio.solutions
*
Email: *mario@osorio.solutions* 
*Just Choose Python!* 

“If I had asked people what they wanted, they would have said faster
horses.”
 ― Henry Ford

On Tue, Oct 25, 2016 at 3:20 PM, Dam ian 
wrote:

> Hi again,
>
> and thanks for the answer and Tips
>
> @Mario R. Osorio
> >I cannot understand is why would you need django for admin, but use some
> other standalone (desktop?) application for everything else.  You should
> try and stay either on the django or on the standalone application.
>
> i think i must add why i need to use a "desktop app" and a web server for
> the "desktop app" :). The desktop app i need for something like this
>
>
> 
>
> for the user to control all devices @home, its a home Automatisation
> Controlling UI (wirten in PyQt)and second part - the web part (django) i
> need to setup the whole system, to add new hardware micro controller to
> customize the whole UI. I could add the whole settings / customizing stuff
> to the UI but from the user experience side it would not be optimal, u know
> what i mean? This UI should be only to Control not to setup things.
>
>
> @all others
>
> now the SQL part in PyQt i do whit QSql and its ok for me,if i use django
> it's not a problem for me to use only for the web part the django way.
>
> Why i would use django because in the future i will develop some Smart
> Phone app to Control the system too and i read that django add
> automatically some API what make me easier to add the communication between
> the mobile app and my standalone application
>
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Re: Running django on demand via my PyQt4 Standalone app

[Dam ian]

Hi again,

and thanks for the answer and Tips 

@Mario R. Osorio 
>I cannot understand is why would you need django for admin, but use some 
other standalone (desktop?) application for everything else.  You should 
try and stay either on the django or on the standalone application. 

i think i must add why i need to use a "desktop app" and a web server for 
the "desktop app" :). The desktop app i need for something like this



for the user to control all devices @home, its a home Automatisation 
Controlling UI (wirten in PyQt)and second part - the web part (django) i 
need to setup the whole system, to add new hardware micro controller to 
customize the whole UI. I could add the whole settings / customizing stuff 
to the UI but from the user experience side it would not be optimal, u know 
what i mean? This UI should be only to Control not to setup things.


@all others

now the SQL part in PyQt i do whit QSql and its ok for me,if i use django 
it's not a problem for me to use only for the web part the django way. 

Why i would use django because in the future i will develop some Smart 
Phone app to Control the system too and i read that django add 
automatically some API what make me easier to add the communication between 
the mobile app and my standalone application

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Re: Read Only by user in Django Admin

[Luis Zárate]

you are looking something like
https://code.djangoproject.com/ticket/7150
https://code.djangoproject.com/attachment/ticket/7150/admin_view-permission-1.0.patch
https://code.djangoproject.com/attachment/ticket/7150/newforms-admin-view-permission-r7737.patch
https://code.djangoproject.com/ticket/8936
https://code.djangoproject.com/ticket/22452
https://code.djangoproject.com/ticket/18814
https://code.djangoproject.com/ticket/17295
https://code.djangoproject.com/ticket/3984
https://code.djangoproject.com/ticket/2058
https://code.djangoproject.com/ticket/820


I don't know why Django doesn't support readonly view, various proposal was
summit and always was reject.

Django Admin needs Readonly View functionality for a complete
implementation of CRUD.

There is a lot of scenarios where you need readonly view for your staff.
And yes you can implement a readonly  in django admin without modify django
core admin with some tricks.

I



2016-10-24 7:26 GMT-06:00 Derek :

> Would it be possible to add these extra admin methods into a parent class;
> and then have all your individual model admins inherit from it?  Ditto for
> the models.py
>
> On Sunday, 8 February 2015 21:15:42 UTC+2, Hangloser Firestarter wrote:
>>
>> Solved.
>>
>> In __init__.py
>> ...
>> from django.db.models.signals import post_syncdb
>> from django.contrib.contenttypes.models import ContentType
>> from django.contrib.auth.models import Permission
>>
>> def add_view_permissions(sender, **kwargs):
>> """
>> This syncdb hooks takes care of adding a view permission too all our
>> content types.
>> """
>> # for each of our content types
>> for content_type in ContentType.objects.all():
>> # build our permission slug
>> codename = "view_%s" % content_type.model
>>
>> # if it doesn't exist..
>> if not Permission.objects.filter(content_type=content_type,
>> codename=codename):
>> # add it
>> Permission.objects.create(content_type=content_type,
>>   codename=codename,
>>   name="Can view %s" %
>> content_type.name)
>> print("Added view permission for %s" % content_type.name)
>>
>> # check for all our view permissions after a syncdb
>> post_syncdb.connect(add_view_permissions)
>> ...
>>
>> In admin.py
>> ...
>> class MyAdmin(admin.ModelAdmin):
>> def has_change_permission(self, request, obj=None):
>> ct = ContentType.objects.get_for_model(self.model)
>> salida = False
>> if request.user.is_superuser:
>> salida = True
>> else:
>> if request.user.has_perm('%s.view_%s' % (ct.app_label,
>> ct.model)):
>> salida = True
>> else:
>> if request.user.has_perm('%s.change_%s' % (ct.app_label,
>> ct.model)):
>> salida = True
>> else:
>> salida = False
>> return salida
>>
>> def get_readonly_fields(self, request, obj=None):
>> ct = ContentType.objects.get_for_model(self.model)
>> if not request.user.is_superuser and
>> request.user.has_perm('%s.view_%s' % (ct.app_label, ct.model)):
>> return [el.name for el in self.model._meta.fields]
>> return self.readonly_fields
>> ...
>>
>> in models.py
>> ...
>> class City(models.Model):
>> nome_cidade = models.CharField(max_length=100)
>> estado_cidade = models.CharField(max_length=100)
>> pais_cidade = models.CharField(max_length=100)
>>
>> def __str__(self):
>> return self.nome_cidade
>>
>> class Meta:
>> permissions = (
>> ('view_city', 'Can view city'),
>> )
>> ...
>>
>> Thank's for help!
>>
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Looking for remote Python/Django job. Experience: 3 years

[zenofpython90]

Hi!  

I'm not sure if it's the right place but... I'm back-end web developer from 
Poland and I'm looking for remote job(prefered long-term collaboration with 
companies or freelancers - full time).

Experience in comercial programming: 3 years
Keywords: Python, Django, JS, Linux, GIT, SQL, REST, Django-CMS
English: basic/intermediate, prefer writing communication on 
Slack/Hipchat/Hangout if not a problem

Unfortunately, most of the projects that I've done are commercial projects 
and I can't show source code but I'm open to recruitment/test project from 
you.

Pricing: ~2200$ monthly/full time.

More information in private message by request.

If you are interested feel free to contact me - zenofpytho...@gmail.com

Best regards

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Re: Migrations with multiple databases

[Markus Holtermann]

Hi Andrea,

If you have models that are entirely unrelated in different databases
you could use different values for INSTALLED_APPS to limit the apps
Django sees or by settings the values in the MIGRATION_MODULES dict to
None to tell Django that those apps don't have migrations.

Cheers,

/Markus

On Tue, Oct 25, 2016 at 08:05:46AM -0700, andrea crotti wrote:

We have a couple of databases with a tiny number of tables, but
django-migrations has still go through all the migrations anyway.
So even if the SQL itself is nothing it still takes a massive amount of
time and memory for the usual known issues with migrations on big projects.

I guess it works this way because it only knows at run time in the router
if something should be done, however it's a bit odd.

If we declared the models per database somehow statically, could we not
just skip everything else?

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Migrations with multiple databases

[andrea crotti]

We have a couple of databases with a tiny number of tables, but 
django-migrations has still go through all the migrations anyway.
So even if the SQL itself is nothing it still takes a massive amount of 
time and memory for the usual known issues with migrations on big projects.

I guess it works this way because it only knows at run time in the router 
if something should be done, however it's a bit odd.

If we declared the models per database somehow statically, could we not 
just skip everything else?

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Re: How to: Django development and debugging

[Luis Zárate]

2016-10-23 17:08 GMT-06:00 Don Thilaka Jayamanne :

> @Luis Zárate
> >I dislike VS as IDE but
> Please remember, this is Visual Studio Code (cross platform, open source,
> free) and not to be confused with Visual Sutdio IDE (full blown IDE runs
> only on Windows)
> Visual Studio Code 
>

Sorry I was confused, I was thinking in Microsoft Visual Studio (MVS).

I didn't test VSC, but I will.  I am looking for a IDE because Aptana is
not updated for a while, so I am having compatibility issues.

33 Mb size it's like i want :) great for Debian installer.

It's any relation with MVS? because you are using the same icon and the
same colors.


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Re: Using socket programming with django

[GMail]

Hi!

Django follows basic Request->Response cycle, so it wouldn't be possible 
without Channels or something similar.

> On 25 Oct 2016, at 11:46, CHAITANYA BHATIA 5-Yr IDD Computer Sci. & Engg. 
>  wrote:
> 
> I have to implement a chat room using socket programming in a web app which 
> uses django but django channel can't be used. I want to know how to redirect 
> the input taken from the webpage into the chat client without calling the 
> chat client function again and again.
> 
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Re: Running django on demand via my PyQt4 Standalone app

[Mario R. Osorio]

I cannot understand is why would you need django for admin, but use some 
other standalone (desktop?) application for everything else.  You should 
try and stay either on the django or on the standalone application.

If after further analysis you still think you need both, then I'd use 
django, along with a rest api such as Django REST framework (www.
django-rest-framework.org) or Tastypie (tastypieapi.org).

You might also ant to make use of kivy (kivy.org) for the user interface.

HTH
Mario Osorio

On Monday, October 24, 2016 at 7:14:52 AM UTC-4, Dam ian wrote:
>
> Hi,
>
> I work on some Smart Home UI / Controlling system using PyQt4, now I'm in 
> the point where i need a Web Server to share a "Admin Page" to let the user 
> change some Smart Home settings (via web page of course :p ). I searched 
> the internet for a answer / idea and I think that the django server would 
> be the best solution, e.g. like django my "APP" also use a SQLite DB. I 
> need that the server is running only if the user activate the "Admin Mode" 
> and want do some change to the UI / App and only locally.
>
> unfortunately i still learning python and my knowledge is not on the level 
> to do this in the right way and I thought, that maybe someone of you can 
> help me:
>
>
> Q1: Is it good idea to start a new QThread who runs the script 
> os.system("web/manage.py runserver")?
> Q2: If yes - how can i stop the server - maybe through terminating the 
> QThread?
> Q3: If no - what is the best method to start a django server on demand via 
> my PyQt4 App and to stop it?
> Q4: can i share my DB whit django, is this a good idea?
> Q5: can i access from django server my app components class, variable etc. 
> and vice versa ( if the server is running)?
> Q6: can u point me where i can find some documentation or example to get 
> closer to my goal?
>
>
> i know there many ways how to do this ( or not) but I would like to 
> achieve it via the "pythonic way" / best practices
> if someone from you can hep me I would be very grateful 
>
> Cheers Damian
>
> PS. Sorry for my not best english
>

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Re: Using Socket Programmaing with django(for a chat room web app)

[Rafael E. Ferrero]

Maybe you can use Tornado for the websockets


Rafael E. Ferrero

2016-10-25 10:08 GMT-03:00 CHAITANYA BHATIA <
chaitanya.bhatia.cs...@itbhu.ac.in>:

> I want to create a chat room web application without using django Chains
> (i.e. I need to use the socket module provided by Python by default). I am
> facing a difficulty in submitting the input from the html page to the
> client function.The only way I know of submitting the input from the
> webpage to the client function is using forms but the problem is that using
> submit option reloads the webpage and thus calls the client function
> everytime a message has to be sent because of this no message can be sent.
> Please suggest a way of doing this.
>
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Using Socket Programmaing with django(for a chat room web app)

[CHAITANYA BHATIA]

I want to create a chat room web application without using django Chains 
(i.e. I need to use the socket module provided by Python by default). I am 
facing a difficulty in submitting the input from the html page to the 
client function.The only way I know of submitting the input from the 
webpage to the client function is using forms but the problem is that using 
submit option reloads the webpage and thus calls the client function 
everytime a message has to be sent because of this no message can be sent.
Please suggest a way of doing this.

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maintain cache in django ( Django restframework)

[Rishav Goyal]

Hi,
I have android app integrated with django restframework. I want to maintain 
cache at backend. Can someone tell me how to maintain cache at backend in 
django ?
Thanks.

Regards,
Rishav Goyal,
Stanford University

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Using socket programming with django

[CHAITANYA BHATIA 5-Yr IDD Computer Sci. & Engg.]

I have to implement a chat room using socket programming in a web app which 
uses django but django channel can't be used. I want to know how to redirect 
the input taken from the webpage into the chat client without calling the chat 
client function again and again.

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Re: Running django on demand via my PyQt4 Standalone app

[Vinicius Assef]

Absolutely! :-D

Thank you.

On 24 October 2016 at 21:01, Avraham Serour  wrote:
> does this help?
>
> https://docs.djangoproject.com/en/1.10/topics/settings/#calling-django-setup-is-required-for-standalone-django-usage
>
>
> On Tue, Oct 25, 2016 at 12:13 AM, Vinicius Assef 
> wrote:
>>
>> On 24 October 2016 at 16:30, Avraham Serour  wrote:
>> >
>> > Django is a webframework, but it is not an all or nothing thing, you
>> > don't
>> > need to use everything, you may just use the ORM, define your models,
>> > import
>> > them from your application.
>>
>> This is an interesting scenario, Avraham.
>>
>> I can't imagine how settings.py would be called to configure database
>> stuff. Could you?
>>
>> It made me curious about that.
>>
>> --
>> Vinicius Assef
>>
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