What are Django ModelFormSets and how do I use them?

What are Django ModelFormSets and how do I use them?

Django ModelFormSets are a way to manage multiple instances of a model form. They allow you to create, update, and delete multiple forms on a single page.

Can you show me an example of how to create a ModelFormSet?

Sure! First, you need to import the necessary classes. Then, create a form and a ModelFormSet like this:

from django.forms import modelformset_factory
from .models import YourModel

YourModelFormSet = modelformset_factory(YourModel, fields=('field1', 'field2'), extra=3)

How do I handle the form submission?

You can handle the form submission in your view by checking if the request is POST, then binding the formset to the request data and validating it. If valid, save the forms.

What if I want to add custom validation?

You can override the clean method in your form or the formset to add custom validation logic.