Django form-like object that wraps a related group of forms.

form_group.py

class FormGroup(object):
    """
    Form-like object that wraps a related group of forms.
    """
    def __init__(self, main_form, **other_forms):
        self.main_form = main_form
        self.other_forms = list(other_forms.values())
        for k, v in other_forms.items():
            setattr(self, k, v)

    def is_valid(self):
        return all([f.is_valid() for f in [self.main_form] + self.other_forms])

    def save(self, *args, **kwargs):
        obj = self.main_form.save(*args, **kwargs)
        kwargs['main_obj'] = obj
        for form in self.other_forms:
            form.save(*args, **kwargs)
        return obj