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 ?
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 ?
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 ?
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 ?
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 ?
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 -~--~~~~--~~--~--~---
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 -~--~~~~--~~--~--~---
