django display message after POST form submit

Question

I have a page with a POST form, that have a action set to some url.
i.e assume this page url is /form_url/ : ..

The view in /sub

Answer 1

For Class Based Views use self.request

I also use self.request.path_info in my return

from django.contrib import messages

class MyCreateView(CreateView):
    ...
       def form_valid(self, form):
          ....
          self.object.save()

          messages.success(self.request, 'Form submission successful')
          
          return HttpResponseRedirect(self.request.path_info)

Same template as damio's answer:

{% if messages %}

    {% for message in messages %}
    
 {{ message }} 
    {% endfor %}

{% endif %}