I have a Tag Model and Mixin that is used for adding tags to entities whenever it is needed. class Tag(models.Model): name = models.CharField(max_length=64, unique=True) class TagMixin(models.Model): class Meta: abstract = True tags = models.ManyToManyField(Tag, blank=True) To create new entities it works well, it implicitly creates the correspondence table for the many to many relation: class Item(TagMixin): name = models.CharField(max_length=64) But what if I want create an admin view on Item where tag is a TabularInline input ? How should I fill the configuration: class ItemTagInline(admin.TabularInline): model = ? @admin.register(models.Item) class ItemAdmin(admin.ModelAdmin): list_display = ("id", "name") inlines = [ItemTagInline] Continue reading...