Django ModelForm with extra fields that are not in the model

Question

I have done a ModelForm adding some extra fields that are not in the model. I use these fields for some calcualtions when saving the form.

The extra fie

Answer 1

In Django 2 you can just add the fields as it was a normal form

class CreateCompanyForm(forms.ModelForm):

    password_confirmation = forms.CharField(
        label=translate('Password confirmation'),
        max_length=70,
        widget=forms.PasswordInput(),
        required=True,
    )
    company_name = forms.CharField(
        label="Nombre de la Compañía",
        max_length=90,
        widget=forms.TextInput(),
        required=True,
    )

    class Meta:
        model = AppUser
        fields = (
            "email",
            "first_name",
            "last_name",
            "password",
        )