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# Specialized template classes for Django, decoupled from the basic template system.
from django.core.template import Context
from django.conf.settings import DEBUG, INTERNAL_IPS
class DjangoContext(Context):
"""
This subclass of template.Context automatically populates 'user' and
'messages' in the context.
"""
def __init__(self, request, dict={}):
Context.__init__(self, dict)
self['user'] = request.user
self['messages'] = request.user.get_and_delete_messages()
self['perms'] = PermWrapper(request.user)
if DEBUG and request.META.get('REMOTE_ADDR') in INTERNAL_IPS:
self['debug'] = True
from django.core import db
self['sql_queries'] = db.db.queries
# PermWrapper and PermLookupDict proxy the permissions system into objects that
# the template system can understand.
class PermLookupDict:
def __init__(self, user, module_name):
self.user, self.module_name = user, module_name
def __repr__(self):
return str(self.user.get_permission_list())
def __getitem__(self, perm_name):
return self.user.has_perm("%s.%s" % (self.module_name, perm_name))
def __nonzero__(self):
return self.user.has_module_perms(self.module_name)
class PermWrapper:
def __init__(self, user):
self.user = user
def __getitem__(self, module_name):
return PermLookupDict(self.user, module_name)
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