Django admin, InLineForm and many2many fields

[Karim]

Hello everyone, I have a problem and I don't understand how to solve it.

I have a simple model:

Supplier(models.Model):

    organization = models.CharField(..)

    location = models.ManyToManyfield(Location, blank=True)

Location(models.Model):

    address = models.CharField(..)

    active = models.BooleanField(default=True)

I created the inlineform to use in the supplier django-admin page:

class LocationInLineForm(admin.TabularInLine):

    model = Supplier.Location.through

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I would like to show the records in the inlineform based on the supplier page in django admin. An administrator in the django admin click on a supplier and the inlineform must shows only the location owned by the selected supplier.

- I don't understand which method override (get_queryset? formfield_for_foreignkey?)

- I don't know how to get the is of the supplier loaded in the django admin.

I would like also filter the location based on the active boolean field. Is possible to do that? 

Thanks

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Karim N. Gorjux