python - Django messages not working -

i trying use django's messages framework.

i've done told in https://docs.djangoproject.com/en/dev/ref/contrib/messages/#enabling-messages

i add messages messages.success(self.request, 'updated.') no messages shown. {% if messages %} evaluates false.

if print {{ messages }} <django.contrib.messages.storage.fallback.fallbackstorage object @ 0x7fb701c47b70>.

what can wrong?

my middlewares

middleware_classes = (     'django.contrib.sessions.middleware.sessionmiddleware',     'django.middleware.common.commonmiddleware',     'django.middleware.csrf.csrfviewmiddleware',     'django.contrib.auth.middleware.authenticationmiddleware',     'django.contrib.auth.middleware.sessionauthenticationmiddleware',     'django.contrib.messages.middleware.messagemiddleware',     'django.middleware.clickjacking.xframeoptionsmiddleware', ) 

my template context processors

template_context_processors = [     "django.contrib.auth.context_processors.auth",     "django.template.context_processors.debug",     "django.template.context_processors.i18n",     "django.core.context_processors.request",     "django.template.context_processors.media",     "django.template.context_processors.static",     "django.template.context_processors.tz",     "django.contrib.messages.context_processors.messages" ] 

my installed apps

installed_apps = (     'django.contrib.admin',     'django.contrib.auth',     'django.contrib.contenttypes',     'django.contrib.sessions',     'django.contrib.messages',     'django.contrib.staticfiles',     'django.contrib.humanize', ) 

edit

class itemupdateview(loginrequiredmixin, updateview):     model = item     context_object_name = 'item'     form_class = itemform      def get_form_kwargs(self):         kwargs = super(itemupdateview, self).get_form_kwargs()         kwargs["user"] = self.request.user         return kwargs      def form_valid(self, form):         transaction.atomic(), reversion.create_revision():             self.object = form.save()             reversion.set_user(self.request.user)             reversion.set_comment("updating")         messages.success(self.request, "updated")         return httpresponseredirect(self.get_success_url())      def get_success_url(self):         return self.object.get_update_url() 

edit 2

{% if messages %}     <ul class="messages">         {% message in messages %}             <li{% if message.tags %} class="{{ message.tags }}"{% endif %}>                 {% if message.level == default_message_levels.error %}important: {% endif %}                 {{ message }}             </li>         {% endfor %}     </ul> {% else %}     no messages {% endif %} 

edit 3

this big mystery me.

it doesn't add message if use

def form_valid(self, form):     self.object = form.save()     messages.success(self.request, "updated")     return httpresponseredirect(self.get_success_url()) 

but add message if use

def dispatch(self, request, *args, **kwargs):     messages.success(request, 'updated.')     return super(itemupdateview, self).dispatch(request, *args, **kwargs) 

you not seeing messages in template because form_valid returns httpresponse, drops request object on floor.

note how solution does pass request object forward.

return super(itemupdateview, self).dispatch(request, *args, **kwargs) 

what around make sure messages within view , pass context object. response method won't matter.

from django.contrib import messages  class homepage(view):     template_name = 'index.html'     def get(request):         return render(request, self.template_name, {             'messages': messages.get_messages(request)         })      def post(request):         return httpresponseredirect('/home/')