ModelForm in Django

Question

ModelForm:

def __init__(self, *args, **kwargs):
    self.user = kwargs.pop('user')
    super(ChapterCreateForm, self).__init__(*args, **kwargs)

Not working I wanna add self.field other. But it not working.

This is my code:

class ChapterCreateForm(ModelForm):
    class Meta:
        model = Chapter
        exclude = ('user', 'book',)

    def __init__(self, *args, **kwargs):
        self.user = kwargs.pop('user')
        super(ChapterCreateForm, self).__init__(*args, **kwargs)

    def clean_title(self):
        title = self.cleaned_data['title']
        if Chapter.objects.filter(user=self.user, title=title).exists():
            raise forms.ValidationError('THIS CHAPTER ALREADY WRITTEN')
        return title

But this form it's working:

class BookCreateForm(ModelForm):
    class Meta:
        model = Book
        exclude = ('user',)

    def __init__(self, *args, **kwargs):
        self.user = kwargs.pop('user')
        super(BookCreateForm, self).__init__(*args, **kwargs)

    def clean_title(self):
        title = self.cleaned_data['title']
        if Book.objects.filter(title=title).exists():
            if Book.objects.filter(user=self.user, title=title).exists():
                raise forms.ValidationError('YOU WROTE THIS BOOK ')
            raise forms.ValidationError('THIS BOOK ALREADY WRITTEN')
        return title

Please help me. Thanks so much

Answer 1

You need to pass user in the form kwargs by overriding get_form_kwargs in the class UserCreateChapterView as below:

class UserCreateChapterView(UserPassesTestMixin, CreateView):
    ...
    ...
    def get_form_kwargs(self):
        kwargs = super(UserCreateChapterView, self).get_form_kwargs()
        kwargs['user'] = self.request.user
        return kwargs

Now you can use kwargs.pop('user') in the __init__ method of ChapterCreateForm and it should work.

Hope it helps!