What are the steps to make a ModelForm work with a ManyToMany relationship with an intermediary model in Django?

Question

• I have a Client and Groupe Model.
• A Client can be part of multiple groups.
• Clients that are part of a gr

Answer 1

I'm providing an alternative solution due to issues I encountered with forms_valid not being called:

class SplingCreate(forms.ModelForm):
class Meta:
    model = SplingModel
    fields = ('Link', 'Genres', 'Image', 'ImageURL',)

def save(self, commit=True):
    from django.forms.models import save_instance

    if self.instance.pk is None:
        fail_message = 'created'
    else:
        fail_message = 'changed'
    fields = set(self._meta.fields) - set(('Genres',))
    instance = save_instance(self, self.instance, fields,
                             fail_message, commit, construct=False)

    genres = self.cleaned_data.get('Genres')
    for genre in genres:
        SplingGenreModel.objects.get_or_create(spling=instance, genre=genre)

    return instance

I've copied the logic from djangos forms/models.py, my field Genres is a manytomany with an intermediary table - I exclude it from the save_instance and then save it separately.