Override Django Forms's Meta Classes

Question

ContactForm is a common form in my app being used multiple times. I already have a Foreign Key of Contact Model in Guardian table.So the accepted answer from the solution works for me.

But its making bit complex to write entire form again for below ContactForm fields when I have to reuse. So kept ContactForm separate to make it reusable.

But still sometimes few fields are optional from the ContactForm, so not able to reuse same ContactForm again.

class ContactForm(forms.ModelForm): 
    class Meta:
        model = Contact
        fields = ("address", "city", "district", "state", "country", 
                 "pincode", "phone1", "phone2", "is_emergency")

Ex. From above ContactForm, I want to use only phone1, phone2 and is_emergency flag in the GuardianForm. Is there anyway to override Meta class by inheriting ContactForm in to the GuardianForm such as:

class GuardianForm(forms.ModelForm, ContactForm): #obviously this will not work
  first_name = forms.CharField(max_length=30, required=False, label = "First Name")
  last_name = forms.CharField(max_length=30, required=False, label = "Last Name")
  # Other Fields ...

  class Meta:
    model = Guardian
    fields = ('passport_number', 'pan_number', 'annual_income',
        'phone1', 'phone2', 'is_emergency',)  # Only 3 Fields of `ContactForm`

OR - Is there any standard better approach to overcome this issue?

Answer 1

I am not sure what you are trying to achive, but here is how you can extend Django Forms's Meta Class :

class GuardianForm(ContactForm): 
    class Meta(ContactForm.Meta):
        fields = ("phone1", "phone2", "is_emergency")