How to remove fields from parent form?

Question

I have a form that I use to register users. I have another form that I use to login users. These two forms share common properties such as the username and password.

I tried to create a LoginForm that inherits from RegisterForm but I don't know how to remove fields I don't need for login, such as repeat password or the agree to T&Cs checkbox.

How can I do this? These forms inherit from Form not ModelForm.

Answer 1

del form.some_field - either after instantiating the form class or in __init__ (after the super call, and you'd use self instead of form).

https://wtforms.readthedocs.io/en/3.0.x/specific_problems/#removing-fields-per-instance

Answer 2

If LoginForm is truly a subset of RegisterForm, you're probably better off reversing your inheritance.

class LoginForm(Form):
    username = ...
    password = ...

class ReigsterForm(LoginForm):
    confirm_password = ...