Django, set initial data to formset with ManyToMany

Question

I need to set initial data to formset with ManyToMany field.

Usually i\'m doing like this when there is no ManyToMany field in forms o

Answer 1

You can use the __init__ function to pre-populate initial data.

Here's what I used for a similar problem:

class MyUpdateForm(forms.ModelForm):

    def __init__(self, *args, **kwargs):
        super(MyUpdateForm, self).__init__(*args, **kwargs)
        self.initial['real_supplements'] = [s.pk for s in list(self.instance.plan_supplements.all())]

Instead of using self.instance.plan_supplements.all() in my example, you can provide any Queryset.