CODEWITHSUNDEEP
djangodjango-templatesdjango-viewsdjango-class-based-views
Rajeev
Rajeev

Reputation: 46919

django print variable in template from class based view

In the following code i am trying to print display_name in the template. But i see that it is empty .What am i doing wrong here ?

Views.py 

class HomeView(TemplateView):
   def get(self, request, *args, **kwargs):
      display_name = "Test123"
      return HttpResponseRedirect(reverse_lazy('site:index'),{'display_name': display_name})

In template

 {{display_name}} //Its empty

Upvotes: 1

Views: 2169

Answers (2)

hellsgate
hellsgate

Reputation: 6005

It's because you are re-directing. While you are adding display_name to the context for this request, firing HttpResponseRedirect means you are making a new request which isn't aware of the context you have created. Instead, you should add display_name to the view you are redirecting to. possibly using a session variable if you need to pass the display_name to the next page.

Edit: in response to your question You should add display_name to the session (all code is untested):

class HomeView(TemplateView):
    def get(self, request, *args, **kwargs):
        self.request.session['display_name'] = 'Test123'
        self.request.session.save()
        return HttpResponseRedirect(reverse_lazy('site:index'))

Then in the target page you'd use the get_content_data method described by cor:

class MyView(TemplateView):
    def get_context_data(self, **kwargs):
        context = super(MyView, self).get_context_data(**kwargs)
        if 'display_name' in self.request.session:
            context['display_name'] = self.request.session['display_name']
            del(self.request.session['display_name'])

        return context

Upvotes: 1

cor
cor

Reputation: 3393

Do it like this:

class HomeView(TemplateView):
    template_name = "yourtemplate.html"

    def get_context_data(self, **kwargs):
        context = super(HomeView, self).get_context_data(**kwargs)
        context["display_name"] = "Test123"
        return context

Upvotes: 0

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