| """ |
| A set of request processors that return dictionaries to be merged into a |
| template context. Each function takes the request object as its only parameter |
| and returns a dictionary to add to the context. |
| |
| These are referenced from the setting TEMPLATE_CONTEXT_PROCESSORS and used by |
| RequestContext. |
| """ |
| |
| from django.conf import settings |
| |
| def auth(request): |
| """ |
| Returns context variables required by apps that use Django's authentication |
| system. |
| |
| If there is no 'user' attribute in the request, uses AnonymousUser (from |
| django.contrib.auth). |
| """ |
| if hasattr(request, 'user'): |
| user = request.user |
| else: |
| from django.contrib.auth.models import AnonymousUser |
| user = AnonymousUser() |
| return { |
| 'user': user, |
| 'messages': user.get_and_delete_messages(), |
| 'perms': PermWrapper(user), |
| } |
| |
| def debug(request): |
| "Returns context variables helpful for debugging." |
| context_extras = {} |
| if settings.DEBUG and request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS: |
| context_extras['debug'] = True |
| from django.db import connection |
| context_extras['sql_queries'] = connection.queries |
| return context_extras |
| |
| def i18n(request): |
| from django.utils import translation |
| |
| context_extras = {} |
| context_extras['LANGUAGES'] = settings.LANGUAGES |
| context_extras['LANGUAGE_CODE'] = translation.get_language() |
| context_extras['LANGUAGE_BIDI'] = translation.get_language_bidi() |
| |
| return context_extras |
| |
| def media(request): |
| """ |
| Adds media-related context variables to the context. |
| |
| """ |
| return {'MEDIA_URL': settings.MEDIA_URL} |
| |
| def request(request): |
| return {'request': request} |
| |
| # PermWrapper and PermLookupDict proxy the permissions system into objects that |
| # the template system can understand. |
| |
| class PermLookupDict(object): |
| def __init__(self, user, module_name): |
| self.user, self.module_name = user, module_name |
| |
| def __repr__(self): |
| return str(self.user.get_all_permissions()) |
| |
| 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(object): |
| def __init__(self, user): |
| self.user = user |
| |
| def __getitem__(self, module_name): |
| return PermLookupDict(self.user, module_name) |
| |
| def __iter__(self): |
| # I am large, I contain multitudes. |
| raise TypeError("PermWrapper is not iterable.") |