Extending Django's Generic Views

Question

I'm writing my first app in Django, and I have a problem with the create_object Generic View; In my urls.py, I have:

(r'^new$', CreateView.as_view()),

The problem is that when the user submits the "new" form, I need to manipulate the data that will be saved to the database (I actually need to add the user_id foreign key); without Generic Views I used to write:

    form = ClientForm(request.POST)
    if form.is_valid():
        data = form.save(commit=False)
        data.user = request.user
        data.save()
        form.save_m2m()

in my view (notice data.user=request.user). I've searched Django docs but I can't find a way to do this (maybe by extending the CreateView class) - somewere in The Book there is only an example that overrides the get_object method of a ListView class to update a last_accessed_date field.

Answer 1

You can do this by overriding the get_form method:

from django.views.generic import CreateView

class CustomCreateView(CreateView):
    def get_form(self, form_class):
        form = super(CustomCreateView, self).get_form(form_class)
        form.instance.user = self.request.user
        return form

EDIT: Nowadays I would override form_valid as per Issac Kelly's answer:

from django.views.generic import CreateView

class CustomCreateView(CreateView):
    def form_valid(self, form):
        form.instance.user = self.request.user
        return super(CustomCreateView, self).form_valid(form)

Answer 2

You want to override the form_valid method.