This is based on the Admin app functionality for dispatching calls.
Once you put these two files in place then add the following to urls.py:
from myProject import ajax
urlpatterns = patterns('',
...
# Add this to the urlpatterns list
(r'^ajax/(.*)', ajax.dispatcher.urls),
...)
you register a function or method with a name like so:
from django.contrib import ajax
def myAutoCompleteCall(request):
...
ajax.dispatcher.register('myAutoComplete', myAutoCompleteCall)
Then you can use the url: http://www.mysite.com/ajax/myAutoComplete
Previously I had placed this app in the django\contrib directory because I wanted to use it in an Admin app mod. Since the release of 1.1 I was able to move it out into a standard app because of the new formfield_overrides property of the ModelAdmin class.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | # myProject\ajax\__init__.py
from dispatcher import dispatcher
# myProject\ajax\dispatcher.py
from django import http
import re
class AlreadyRegistered(Exception):
pass
class NotCallable(Exception):
pass
class Dispatcher(object):
def __init__(self):
self._funcs = {} # Reference name -> Ajax Function
def register(self, name, func, force_override=False):
if not callable(func):
raise NotCallable('The supplied AJAX function %s is not a function (it is not callable).' % func.__name__)
if name in self._funcs and not force_override:
raise AlreadyRegistered('The AJAX function name %s is already registered' % name)
# Instantiate the admin class to save in the registry
self._funcs[name] = func
def has_permission(self, request):
"""
Returns True if the given HttpRequest has permission to view
*at least one* page in the admin site.
"""
return request.user.is_authenticated() and request.user.is_staff
def urls(self, request, url):
"""
Handles main URL routing for the admin app.
`url` is the remainder of the URL -- e.g. 'comments/comment/'.
"""
if request.method == 'GET' and not request.path.endswith('/'):
return http.HttpResponseRedirect(request.path + '/')
# Figure out the admin base URL path and stash it for later use
self.root_path = re.sub(re.escape(url) + '$', '', request.path)
url = url.rstrip('/') # Trim trailing slash, if it exists.
# Check permission to continue or display login form.
if not self.has_permission(request):
return http.HttpResponseForbidden('You do not have permission to view the requested information.')
if url == '':
return http.HttpResponseForbidden('An AJAX function must be specified.')
else:
return self._funcs[url](request)
raise http.Http404('The requested admin page does not exist.')
dispatcher = Dispatcher()
|
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Comments
Don't add things to django.contrib or 'fake' things being in django.contrib either.
Infact, just lease django.contrib well alone! please.
#
It doesn't need to go in django.contrib. I wanted to use it in some widgets I created for the Admin app and there are certain modifications where you can't avoid modifying an Admin app file. So I figured it was better to put everything in one spot.
#
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