Re: Does Django have a function that can be called by every view function ?
Thank you , guys ~ Your help are really good for me ~ On Dec 1, 11:23 pm, Jon Loyens <[EMAIL PROTECTED]> wrote: > Another +1 for decorators. In fact, the example David S uses > authentication and logins as an example of what he wants to do and its > already handled as a decorator thus giving him a decent pattern to > follow. David S, I'd suggest you look up the @login_required > decorator and even look through the Django code to see how it's > implemented. Don't be afraid of cruising through the code. As good > as the documentation is, the code is also well organized and uses a > lot of good pythonic idioms if you're new to the language. > > Jon. > > On Dec 1, 6:49 am, martyn <[EMAIL PROTECTED]> wrote: > > > David, > > > +1 for decorator. > > That let you use it or not in each view. > > > On Dec 1, 9:30 am, David Shieh <[EMAIL PROTECTED]> wrote: > > > > Thanks , David Zhou , I will find some information for decorator > > > And also , I will surf for middleware . > > > > Thank you very much , Malcolm. > > > > On Dec 1, 3:55 pm, "David Zhou" <[EMAIL PROTECTED]> wrote: > > > > > On Mon, Dec 1, 2008 at 2:23 AM, David Shieh <[EMAIL PROTECTED]> wrote: > > > > > I dont' know whether this make any sense . > > > > > Right now , I can't test it , but if django won't initiate the > > > > > views.py as a class , this method will make no sense. > > > > > Why not write a decorator? > > > > > --- > > > > David Zhou > > > > [EMAIL PROTECTED] --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
Another +1 for decorators. In fact, the example David S uses authentication and logins as an example of what he wants to do and its already handled as a decorator thus giving him a decent pattern to follow. David S, I'd suggest you look up the @login_required decorator and even look through the Django code to see how it's implemented. Don't be afraid of cruising through the code. As good as the documentation is, the code is also well organized and uses a lot of good pythonic idioms if you're new to the language. Jon. On Dec 1, 6:49 am, martyn <[EMAIL PROTECTED]> wrote: > David, > > +1 for decorator. > That let you use it or not in each view. > > On Dec 1, 9:30 am, David Shieh <[EMAIL PROTECTED]> wrote: > > > Thanks , David Zhou , I will find some information for decorator > > And also , I will surf for middleware . > > > Thank you very much , Malcolm. > > > On Dec 1, 3:55 pm, "David Zhou" <[EMAIL PROTECTED]> wrote: > > > > On Mon, Dec 1, 2008 at 2:23 AM, David Shieh <[EMAIL PROTECTED]> wrote: > > > > I dont' know whether this make any sense . > > > > Right now , I can't test it , but if django won't initiate the > > > > views.py as a class , this method will make no sense. > > > > Why not write a decorator? > > > > --- > > > David Zhou > > > [EMAIL PROTECTED] --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
David, +1 for decorator. That let you use it or not in each view. On Dec 1, 9:30 am, David Shieh <[EMAIL PROTECTED]> wrote: > Thanks , David Zhou , I will find some information for decorator > And also , I will surf for middleware . > > Thank you very much , Malcolm. > > On Dec 1, 3:55 pm, "David Zhou" <[EMAIL PROTECTED]> wrote: > > > > > On Mon, Dec 1, 2008 at 2:23 AM, David Shieh <[EMAIL PROTECTED]> wrote: > > > I dont' know whether this make any sense . > > > Right now , I can't test it , but if django won't initiate the > > > views.py as a class , this method will make no sense. > > > Why not write a decorator? > > > --- > > David Zhou > > [EMAIL PROTECTED] --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
Thanks , David Zhou , I will find some information for decorator And also , I will surf for middleware . Thank you very much , Malcolm. On Dec 1, 3:55 pm, "David Zhou" <[EMAIL PROTECTED]> wrote: > On Mon, Dec 1, 2008 at 2:23 AM, David Shieh <[EMAIL PROTECTED]> wrote: > > I dont' know whether this make any sense . > > Right now , I can't test it , but if django won't initiate the > > views.py as a class , this method will make no sense. > > Why not write a decorator? > > --- > David Zhou > [EMAIL PROTECTED] --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
On Mon, Dec 1, 2008 at 2:23 AM, David Shieh <[EMAIL PROTECTED]> wrote: > I dont' know whether this make any sense . > Right now , I can't test it , but if django won't initiate the > views.py as a class , this method will make no sense. Why not write a decorator? --- David Zhou [EMAIL PROTECTED] --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
I have found a post in here : http://davyd.livejournal.com/262859.html this is the way this author resolves this problem. --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
No , not in that way. Let me show you some code #a.py class A: def __init__(self): #do somthing #views.py class B(A): def index(request): #do something else #urls.py (r'^$', 'site.app.views.index'), I dont' know whether this make any sense . Right now , I can't test it , but if django won't initiate the views.py as a class , this method will make no sense. On Dec 1, 2:52 pm, Malcolm Tredinnick <[EMAIL PROTECTED]> wrote: > On Sun, 2008-11-30 at 22:46 -0800, David Shieh wrote: > > yeah , I will consider about middleware , and I am also thinking about > > write a class that contains the functions I need , and other funcions > > just inherit it , will it work ? > > Since functions don't inherit from classes, your question doesn't really > make sense. > > Regards, > Malcolm --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
On Sun, 2008-11-30 at 22:46 -0800, David Shieh wrote: > yeah , I will consider about middleware , and I am also thinking about > write a class that contains the functions I need , and other funcions > just inherit it , will it work ? Since functions don't inherit from classes, your question doesn't really make sense. Regards, Malcolm --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
yeah , I will consider about middleware , and I am also thinking about write a class that contains the functions I need , and other funcions just inherit it , will it work ? On Dec 1, 2:41 pm, Malcolm Tredinnick <[EMAIL PROTECTED]> wrote: > On Sun, 2008-11-30 at 22:35 -0800, David Shieh wrote: > > Hi , Malcolm, > > > Now , I understand what you said.But using session means user must to > > call a certain to set the session. > > I was using session as an *example*. It's something that, based on > incoming request information, is run every time and can do some extra > processing. It's an example of how to abstract away that processing from > the view functions. > > > Maybe Django should learn from other frameworks to get a action system > > to handle this. > > You keep operating on the assumption that it doesn't exist, but that > seems to be because you're locked into it being a way to pass extra > parameters to a view. Django already has such a system. It's called > middleware. > > Malcolm --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
On Sun, 2008-11-30 at 22:35 -0800, David Shieh wrote: > Hi , Malcolm, > > Now , I understand what you said.But using session means user must to > call a certain to set the session. I was using session as an *example*. It's something that, based on incoming request information, is run every time and can do some extra processing. It's an example of how to abstract away that processing from the view functions. > Maybe Django should learn from other frameworks to get a action system > to handle this. You keep operating on the assumption that it doesn't exist, but that seems to be because you're locked into it being a way to pass extra parameters to a view. Django already has such a system. It's called middleware. Malcolm --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
Hi , Malcolm, Now , I understand what you said.But using session means user must to call a certain to set the session.I mean , for example , I am setting up a blog , and every page want to show the categories this blog have . If I write these categories as a session value , I have to write it into the index function ,and when a user visit the index page , he will get it ,and no matter which page he visit , he will also get this value . However , the problem is , what if he firstly visit one of the other article page , maybe he just get the url for some page , so , he won't get the categories value , cause he didn't visit the index page , am I right ? Maybe Django should learn from other frameworks to get a action system to handle this. Indeed , I really need your help with this . Thanks On Dec 1, 2:22 pm, Malcolm Tredinnick <[EMAIL PROTECTED]> wrote: > On Sun, 2008-11-30 at 21:48 -0800, David Shieh wrote: > > Thanks , Malcolm , > > > I think your solution can resolve my problem.But does it a bit > > complex ? > > In fact , what I really want is a view function that will be called by > > every view function. > > i.e. , if I wrote an auth system , I need to authenticate whether the > > user is logged in every view functions and pass some parameters to > > every views function . > > > Any suggestions ? > > You'll end up dispatching every URL to the same view and then > essentially building your own dispatcher to further dispatch to the > "real" view functions. Or attach a decorator to those views you want > this to happen to. > > Because, the point is, you rarely want such a thing to run for *every* > view function. In any significantly sized application, there is rarely > common stuff that runs for every single view that cannot be done via > middleware. You're already receiving a request object in your functions, > you can pass in extra parameters through that (just like we do with > request.session, etc). > > In other words, the functionality already exists. It's spelled slightly > differently to other frameworks, but that's pretty normal -- everybody > has slightly different ways of writing the same thing. > > The option you are looking for is middleware. If you don't want to use > that, that's fine and writing a wrapper to make it all automatic is > obviously possible. But it's not shipped with Django, since we already > provide one way to achieve this functionality. > > Regards, > Malcolm --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
On Sun, 2008-11-30 at 21:48 -0800, David Shieh wrote: > Thanks , Malcolm , > > I think your solution can resolve my problem.But does it a bit > complex ? > In fact , what I really want is a view function that will be called by > every view function. > i.e. , if I wrote an auth system , I need to authenticate whether the > user is logged in every view functions and pass some parameters to > every views function . > > Any suggestions ? You'll end up dispatching every URL to the same view and then essentially building your own dispatcher to further dispatch to the "real" view functions. Or attach a decorator to those views you want this to happen to. Because, the point is, you rarely want such a thing to run for *every* view function. In any significantly sized application, there is rarely common stuff that runs for every single view that cannot be done via middleware. You're already receiving a request object in your functions, you can pass in extra parameters through that (just like we do with request.session, etc). In other words, the functionality already exists. It's spelled slightly differently to other frameworks, but that's pretty normal -- everybody has slightly different ways of writing the same thing. The option you are looking for is middleware. If you don't want to use that, that's fine and writing a wrapper to make it all automatic is obviously possible. But it's not shipped with Django, since we already provide one way to achieve this functionality. Regards, Malcolm --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
On Sun, Nov 30, 2008 at 11:48 PM, David Shieh <[EMAIL PROTECTED]> wrote: > I think your solution can resolve my problem.But does it a bit > complex ? > In fact , what I really want is a view function that will be called by > every view function. > i.e. , if I wrote an auth system , I need to authenticate whether the > user is logged in every view functions and pass some parameters to > every views function . Perhaps it would be a good idea at this point to read Django's middleware documentation, to get a feel for how that works and how you might put it to use? -- "Bureaucrat Conrad, you are technically correct -- the best kind of correct." --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
Thanks , Malcolm , I think your solution can resolve my problem.But does it a bit complex ? In fact , what I really want is a view function that will be called by every view function. i.e. , if I wrote an auth system , I need to authenticate whether the user is logged in every view functions and pass some parameters to every views function . Any suggestions ? On Dec 1, 11:49 am, Malcolm Tredinnick <[EMAIL PROTECTED]> wrote: > On Sun, 2008-11-30 at 19:41 -0800, David Shieh wrote: > > [...] > > > I have searched for some information . I know that middleware can do > > this , but what I really want is just a small function for this . > > A process_request() function in middleware can be as small as you like. > Middleware provides the hooks for functions that run before and/or after > each view function. It's exactly what you're asking about and you > haven't explained why they don't do what you want. > > Regards, > Malcolm --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Does Django have a function that can be called by every view function ?
On Sun, 2008-11-30 at 19:41 -0800, David Shieh wrote: [...] > I have searched for some information . I know that middleware can do > this , but what I really want is just a small function for this . A process_request() function in middleware can be as small as you like. Middleware provides the hooks for functions that run before and/or after each view function. It's exactly what you're asking about and you haven't explained why they don't do what you want. Regards, Malcolm --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Does Django have a function that can be called by every view function ?
I have used Django for several months , and it really attacts me . I love it. But when I use it more , I found a problem troubles me , that is , I can't find a way to make a function be called by every view function automatically . I used CakePHP , it have a function named beforeFilter() . It will be called everytime before the action excute . That is , when a user calles an action , this beforeFilter() fucntion is called by CakePHP automatically , very convenient. So I think , does Django have the same function like CakePHP ? And as I know , other frameworks also have the same function , like RoR . I have searched for some information . I know that middleware can do this , but what I really want is just a small function for this . So , guys , please help me with this , thanks. --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
