How to set initial values for a ModelForm when instance is also given

Question

It seems like if a ModelForm is given an instance, it ignores any values you provide for initial and instead sets it to the value of the instance -- even if tha

Answer 1

You can also pass extra variables to the class when initializing it. The values you pass can then override initial or POST data.

class RegisterForm(forms.ModelForm):
    ... fields here ...

    def __init__(self, person, conference, *args, **kwargs):
        ... other code ...
        super(RegisterForm, self).__init__(*args, **kwargs)
        self.fields['person'] = person
        self.fields['conference'] = conference

form = RegisterForm(person, conference, initial=initial, instance=registration)