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Rewrote user_passes_test to use auto_adapt_to_methods, removing the need for _CheckLogin 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@11587 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Luke Plant 2009-09-21 22:34:45 +00:00
parent afeafcd492
commit af02f38e02
1 changed files with 16 additions and 48 deletions
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64
django/contrib/auth/decorators.py
View File

@ -1,11 +1,12 @@
try: try:
from functools import update_wrapper from functools import update_wrapper, wraps
except ImportError: except ImportError:
from django.utils.functional import update_wrapper # Python 2.3, 2.4 fallback. from django.utils.functional import update_wrapper, wraps # Python 2.3, 2.4 fallback.
from django.contrib.auth import REDIRECT_FIELD_NAME from django.contrib.auth import REDIRECT_FIELD_NAME
from django.http import HttpResponseRedirect from django.http import HttpResponseRedirect
from django.utils.http import urlquote from django.utils.http import urlquote
from django.utils.decorators import auto_adapt_to_methods
def user_passes_test(test_func, login_url=None, redirect_field_name=REDIRECT_FIELD_NAME): def user_passes_test(test_func, login_url=None, redirect_field_name=REDIRECT_FIELD_NAME):
""" """
@ -13,9 +14,19 @@ def user_passes_test(test_func, login_url=None, redirect_field_name=REDIRECT_FIE
redirecting to the log-in page if necessary. The test should be a callable redirecting to the log-in page if necessary. The test should be a callable
that takes the user object and returns True if the user passes. that takes the user object and returns True if the user passes.
""" """
def decorate(view_func): if not login_url:
return _CheckLogin(view_func, test_func, login_url, redirect_field_name) from django.conf import settings
return decorate login_url = settings.LOGIN_URL
def decorator(view_func):
def _wrapped_view(request, *args, **kwargs):
if test_func(request.user):
return view_func(request, *args, **kwargs)
path = urlquote(request.get_full_path())
tup = login_url, redirect_field_name, path
return HttpResponseRedirect('%s?%s=%s' % tup)
return wraps(view_func)(_wrapped_view)
return auto_adapt_to_methods(decorator)
def login_required(function=None, redirect_field_name=REDIRECT_FIELD_NAME): def login_required(function=None, redirect_field_name=REDIRECT_FIELD_NAME):
""" """
@ -36,46 +47,3 @@ def permission_required(perm, login_url=None):
enabled, redirecting to the log-in page if necessary. enabled, redirecting to the log-in page if necessary.
""" """
return user_passes_test(lambda u: u.has_perm(perm), login_url=login_url) return user_passes_test(lambda u: u.has_perm(perm), login_url=login_url)
class _CheckLogin(object):
"""
Class that checks that the user passes the given test, redirecting to
the log-in page if necessary. If the test is passed, the view function
is invoked. The test should be a callable that takes the user object
and returns True if the user passes.
We use a class here so that we can define __get__. This way, when a
_CheckLogin object is used as a method decorator, the view function
is properly bound to its instance.
"""
def __init__(self, view_func, test_func, login_url=None, redirect_field_name=REDIRECT_FIELD_NAME):
if not login_url:
from django.conf import settings
login_url = settings.LOGIN_URL
self.view_func = view_func
self.test_func = test_func
self.login_url = login_url
self.redirect_field_name = redirect_field_name
# We can't blindly apply update_wrapper because it udpates __dict__ and
# if the view function is already a _CheckLogin object then
# self.test_func and friends will get stomped. However, we also can't
# *not* update the wrapper's dict because then view function attributes
# don't get updated into the wrapper. So we need to split the
# difference: don't let update_wrapper update __dict__, but then update
# the (parts of) __dict__ that we care about ourselves.
update_wrapper(self, view_func, updated=())
for k in view_func.__dict__:
if k not in self.__dict__:
self.__dict__[k] = view_func.__dict__[k]
def __get__(self, obj, cls=None):
view_func = self.view_func.__get__(obj, cls)
return _CheckLogin(view_func, self.test_func, self.login_url, self.redirect_field_name)
def __call__(self, request, *args, **kwargs):
if self.test_func(request.user):
return self.view_func(request, *args, **kwargs)
path = urlquote(request.get_full_path())
tup = self.login_url, self.redirect_field_name, path
return HttpResponseRedirect('%s?%s=%s' % tup)