You want to add message after a user submit a django form: POST, CREATE/UPDATE/DELETE methods.
Prerequisites
You must have below configurations in your settings to show messages in Django:
# settings.py INSTALLED_APPS = [ "django.contrib.messages", ] MIDDLEWARE = [ "django.contrib.sessions.middleware.SessionMiddleware", "django.contrib.messages.middleware.MessageMiddleware", ] TEMPLATES = [ { "OPTIONS": { "context_processors": [ "django.contrib.messages.context_processors.messages", ], }, ] Add Message
You can update your own methods or classes to add messages, however it is better to use what Django provides already: SuccessMessageMixin.
SuccessMessageMixin adds a success message attribute to FormView based classes:
from django.contrib import messages class SuccessMessageMixin: """ Add a success message on successful form submission. """ success_message = '' def form_valid(self, form): response = super().form_valid(form) success_message = self.get_success_message(form.cleaned_data) if success_message: messages.success(self.request, success_message) return response def get_success_message(self, cleaned_data): return self.success_message % cleaned_data Code Example
As an instance I will show views, urls and template:
Views
#views.py from django.contrib.messages.views import SuccessMessageMixin from django.urls import reverse_lazy from django.views.generic.edit import UpdateView from .forms import BookCreateForm class BookUpdateView(SuccessMessageMixin, UpdateView): """ List all Book objects, update a Book object in database and add a success message into template. """ model = Book form_class = BookUpdateForm success_url = reverse_lazy('books:book-update') template_name = 'books/update.html' success_message = "%(book)s was updated successfully" URL
# urls.py from django.utils.translation import ugettext_lazy as _ from .views import BookUpdateView path(_('book/update/'), BookUpdateView.as_view(), name='book-update'), Template
<!-- templates/books/update.html --> {% if messages %} {% for message in messages %} <div class="text-center alert alert-{{ message.tags }}"> {{ message|safe }} </div> {% endfor %} {% endif %} <form method="POST"> {% csrf_token %} {{ form }} <input type="submit" value="Submit"> </form> All done!
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