Django admin - How can I add the green plus sign for Many-to-many Field in custom admin form

Question

The green plus sign button for adding new instances in the admin form disappears for my MultiSelect field (photos) when I define it in my form. Ie, removing the line with th

Answer 1

Yes you are right, you have to wrap your widget with django.contrib.admin.widgets.RelatedFieldWidgetWrapper, which turns out to be a bit complicated since it expects the current admin site as a parameter for initialization! Maybe you will find this post helpful!