Django中BSModalCreateView忽略get_success_url问题求助

I see your issue—this is a common gotcha with BSModalCreateView from django-bootstrap-modal-forms! The problem stems from how this class handles AJAX-powered modal forms. Let me break it down and show you how to fix it.

Why Your Current Code Isn't Working #

BSModalCreateView is built for AJAX submissions by default. When you override form_valid() and return a HttpResponseRedirect, the AJAX request receives this redirect, but the frontend JavaScript from the bootstrap modal forms library doesn’t process it like a regular page request. Instead, it expects a JSON response containing a success_url field to handle the redirect client-side. Your manual redirect gets ignored because it’s not in the format the library expects.

The Fix: Let the Parent Class Handle the Response #

Instead of returning HttpResponseRedirect directly, call the parent class’s form_valid() method (which constructs the proper JSON response) and ensure your get_success_url() is correctly used. Here’s how to adjust your code:

class SignUpView(BSModalCreateView):
    model = User
    form_class = SignUpForm
    success_message = 'Please check your email to complete the registration'
    template_name = 'form_modal.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['heading'] = 'Create ID'
        return context

    def form_valid(self, form):
        # Your custom user creation and email logic stays intact
        user = form.save(commit=False)
        user.is_active = False
        user.save()
        
        current_site = '127.0.0.1:8000'
        mail_subject = 'Activate your account.'
        message = render_to_string('registration/confirm_email.html', {
            'user': user,
            'domain': '127.0.0.1:8000',
            'uid': urlsafe_base64_encode(force_bytes(user.pk)),
            'token': default_token_generator.make_token(user),
        })
        to_email = form.cleaned_data.get('email')
        email = EmailMessage(
            mail_subject, message, to=[to_email]
        )
        email.send()

        # Call parent class's form_valid to generate the correct JSON response
        response = super().form_valid(form)
        # Parent class automatically uses your get_success_url() here—no extra setup needed
        return response

    def get_success_url(self):
        return reverse('dashboard')

Additional Checks #

• Frontend JavaScript: Make sure you’ve included the django-bootstrap-modal-forms JS and initialized your modal correctly. The library relies on this JS to read the success_url from the JSON response and trigger the redirect. Example initialization:

  $(document).ready(function() {
      $("#your-modal-form-id").modalForm({
          formURL: "{% url 'signup' %}"
      });
  });
  

• AJAX Setup Confirmation: Ensure your form has the proper ajax class or data attributes to trigger AJAX submission. If the form bypasses AJAX, the redirect logic won’t work as expected.

Why This Works #

The parent BSModalCreateView.form_valid() method builds a JSON response that includes your success_message and the URL from get_success_url(). The frontend JS detects this response and redirects the user to your specified dashboard URL, which is exactly what you want.

内容的提问来源于stack exchange，提问作者HobbyHack