Django. Übergeben Sie die Variable von der Ansicht zur Vorlage

Question

Ich möchte Variable Appuser zu Vorlage übergeben und ich verstehe nicht, wie es geht. Ich habe versucht, kwargs.update zu verwenden, aber es funktioniert immer noch nicht.

Ich habe einen Blick:

class CausesView(AjaxFormView): 
    appuser = None 
    causes = [] 
    cause_allocation_set = None 

    def prepare_request(self, request, *args, **kwargs): 
     self.causes = Cause.objects.filter(is_main_cause = True) 
     self.appuser = AppUser.get_login_user(request) 
     self.cause_allocation_set = set([r.cause_id for r in self.appuser.current_cause_save_point.cause_allocations_list]) 

    def prepare_context(self, request, context, initial): 
     initial.update(
      causes = self.cause_allocation_set, 
      appuser = self.appuser, 
      ) 

    def prepare_form(self, request, form): 
     form._set_choices("causes", [(r.id, r.title) for r in self.causes]) 

    def custom_context_data(self, request, **kwargs): 
     kwargs.update(
      special_test = "dsf" 
     ) 
     return kwargs 

    def process_form(self, request, form): 
     data = form.cleaned_data 

     try: 
      with transaction.atomic(): 
       if self.cause_allocation_set != set(data.get('causes')): 
        self.appuser.save_causes(data.get('causes')) 
     except Exception as e: 
      message = "There was an error with saving the data: " + str(e.args) 
      return AjaxErrorResponse({'title':"Error", 'message':message}) 
     return AjaxSuccessResponse('Causes Saved') 

Und ich habe eine Form:

class CauseForm(AjaxForm): 
    causes = forms.TypedMultipleChoiceField(label="Select Causes", choices =(), required = False, coerce = int, 
        widget = forms.CheckboxSelectMultiple()) 

    def clean(self): 
     cleaned_data = super(CauseForm, self).clean() 
     causes = cleaned_data.get('causes') 

     validation_errors = [] 
     if not causes is None and not len(causes): 
      validation_errors.append(forms.ValidationError("At least one Cause is required")) 

     if len(validation_errors): 
      raise forms.ValidationError(validation_errors) 
     return cleaned_data 

Wie kann ich Variable appuser in temlpate bekommen? Zum Beispiel:

{{ appuser.name }} 

funktioniert nicht.

Answer 1

lesen How to use get_context_data in django und https://docs.djangoproject.com/en/1.9/ref/class-based-views/mixins-single-object/#django.views.generic.detail.SingleObjectMixin.get_context_data

Hier ist Beispiel dafür, wie Sie dies tun können

class CausesView(AjaxFormView): 
    ... 
    def get_context_data(self, **kwargs): 
     context_data = super(CausesView, self).get_context_data(**kwargs) 
     context_data['appuser'] = self.appuser 
     return context_data