How to add multiple objects to ManyToMany relationship at once in Django ?
Use: object.m2mfield.add(*items) as described in the documentation:
add() accepts an arbitrary number of arguments, not a list of them.
add(obj1, obj2, obj3, ...)To expand that list into arguments, use *
add(*[obj1, obj2, obj3])Addendum:
Django does not call obj.save() for each item but uses bulk_create(), instead.
To add on, If you want to add them from a queryset
Example
# Returns a querysetpermissions = Permission.objects.all()# Add the results to the many to many field (notice the *)group = MyGroup.objects.get(name='test')group.permissions.add(*permissions)
Django 1.9 adds additional ways for adding to a many-to-many relationship.
Documentation: https://docs.djangoproject.com/en/dev/ref/models/relations/#django.db.models.fields.related.RelatedManager.set
set is a new nicety:
>>> new_list = [obj1, obj2, obj3]>>> e.related_set.set(new_list)