How do I pass a parent id as an fk to child object's ModelForm using generic class-based views in Django?

Question

I am trying to use Django Generic Class-Based Views to build a CRUD interface to a two-model database. I have a working CRUD interface to the parent model, and am stuck try

Answer 1

I had a similar situation and, when doing the accepted answer steps I encountered 2 errors (I'm using Python 2.7):

1. object has no attribute 'fields' which was fixed by using answer to a similar question: https://stackoverflow.com/a/8928501/2097023 from @scotchandsoda:

...self.fields should be placed before calling super(...)

def __init__(self, users_list, **kw):
    super(BaseWriteForm, self).__init__(**kw)
    self.fields['recipients'].queryset = User.objects.filter(pk__in=users_list)

2. object has no attribute 'get' which was fixed using answer: https://stackoverflow.com/a/36951830/2097023 from @luke_dupin:

...this error can also be generated by incorrectly passing arguments in the init of a form, which is used for an admin model.

Example:

class MyForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(MyForm, self).__init__(self, *args, **kwargs)

Notice the double passing of self? It should be:

class MyForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(MyForm, self).__init__(*args, **kwargs)