Django: Can class-based views accept two forms at a time?

Question

If I have two forms:

class ContactForm(forms.Form):
    name = forms.CharField()
    message = forms.CharField(widget=forms.Textarea)

class SocialForm(forms.Form):
    name = forms.CharField()
    message = forms.CharField(widget=forms.Textarea)

and wanted to use a class based view, and send both forms to the template, is that even possible?

class TestView(FormView):
    template_name = 'contact.html'
    form_class = ContactForm

It seems the FormView can only accept one form at a time. In function based view though I can easily send two forms to my template and retrieve the content of both within the request.POST back.

variables = {'contact_form':contact_form, 'social_form':social_form }
return render(request, 'discussion.html', variables)

Is this a limitation of using class based view (generic views)?

Many Thanks

Answer 1

Here's a scaleable solution. My starting point was this gist,

https://gist.github.com/michelts/1029336

i've enhanced that solution so that multiple forms can be displayed, but either all or an individual can be submitted

https://gist.github.com/jamesbrobb/748c47f46b9bd224b07f

and this is an example usage

class SignupLoginView(MultiFormsView):
    template_name = 'public/my_login_signup_template.html'
    form_classes = {'login': LoginForm,
                    'signup': SignupForm}
    success_url = 'my/success/url'

    def get_login_initial(self):
        return {'email':'[email protected]'}

    def get_signup_initial(self):
        return {'email':'[email protected]'}

    def get_context_data(self, **kwargs):
        context = super(SignupLoginView, self).get_context_data(**kwargs)
        context.update({"some_context_value": 'blah blah blah',
                        "some_other_context_value": 'blah'})
        return context

    def login_form_valid(self, form):
        return form.login(self.request, redirect_url=self.get_success_url())

    def signup_form_valid(self, form):
        user = form.save(self.request)
        return form.signup(self.request, user, self.get_success_url())

and the template looks like this

<form class="login" method="POST" action="{% url 'my_view' %}">
    {% csrf_token %}
    {{ forms.login.as_p }}

    <button name='action' value='login' type="submit">Sign in</button>
</form>

<form class="signup" method="POST" action="{% url 'my_view' %}">
    {% csrf_token %}
    {{ forms.signup.as_p }}

    <button name='action' value='signup' type="submit">Sign up</button>
</form>

An important thing to note on the template are the submit buttons. They have to have their 'name' attribute set to 'action' and their 'value' attribute must match the name given to the form in the 'form_classes' dict. This is used to determine which individual form has been submitted.