Htykuut

TL;DR: I need a some kind of formset for formsets.

I have two different models related to one buisness-entity, and I need to make a form to edit both models like a one form. And I need to create a lot of such forms on the one page like djngo inline formset does.

Now I have the following thing:

class Parent(models.Model):

  name = models.Charfield()



class FirstChild(models.Model):

  name = models.Charfield()

  e_id = models.IntegerField()

  parent = models.ForeignKey(Parent)



class FirstChildForm(django.forms.ModelForm):

    class Meta:

        model = Child

        fields = ('name', 'e_id', 'parent')

        widgets = {'parent': forms.TextInput}

And I render a lot of them usiing inline formsets:

formset_class = inlineformset_factory(Parent, FirstChild, 

                                      form=FirstChildForm, extra=1)

But now I have to add second child model and a form for it, and still render it like an one inline form, bit make it form actually edit two models. Like this:

class SecondChild(models.Model):

  name = models.Charfield()

  e_id = models.IntegerField()

  parent = models.ForeignKey(Parent)



class SecondChildForm(django.forms.ModelForm):

    class Meta:

        model = Child

        fields = ('name', 'e_id', 'parent')

        widgets = {'parent': forms.TextInput}



formset_class = inlineformset_factory(models=[Parent, FirstChild], 

                                      forms=[FirstChildForm, SecondChildForm], 

                                      extra=1)

As far as I understand, Django formsets cannot work with multiple models right now.

So which way should I choose to implement this behaviour and do not broke all django conceptions? I cannot use some extra libraries so I have to implement everything by myself and I use django 1.6 if it is important.

So, finally I used this approach as a base: https://micropyramid.com/blog/how-to-use-nested-formsets-in-django/