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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
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