INSTALLED_APPS添加: 'django.contrib.auth', MIDDLEWARE添加: 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.auth.context_processors.auth', TEMPLATES = [ { 'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [os.path.join(BASE_DIR, 'templates')], 'APP_DIRS': True, 'OPTIONS': { 'context_processors': [ 'django.template.context_processors.debug', 'django.template.context_processors.i18n', 'django.template.context_processors.media', 'django.template.context_processors.static', 'django.template.context_processors.tz', 'django.contrib.messages.context_processors.messages', 'django.template.context_processors.request', 'django.contrib.auth.context_processors.auth', ], }, }, ]
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() print(user, PermWrapper(user), '-----------------------') return { 'user': user, 'perms': PermWrapper(user), }
return render_to_response(request, 'fms/fms_add.html', {'request': request, 'form': form, 'error': error},context_instance=RequestContext(request))
其中RequestContext是 django.template.Context 的子类.接受 request 和 context_processors ,从而将上下文填充渲染到模板问题已经很明确,由于使用了 render_to_response 方法,没有手动添加 context_instance=RequestContext(request) 导致模板不能使用 {{ perms }} 变量
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