Asked By – zjm1126
What is the
related_name argument useful for on
ForeignKey fields? For example, given the following code, what is the effect of
class Map(db.Model): members = models.ManyToManyField(User, related_name='maps', verbose_name=_('members'))
Now we will see solution for issue: What is related_name used for?
related_name attribute specifies the name of the reverse relation from the
User model back to your model.
If you don’t specify a
related_name, Django automatically creates one using the name of your model with the suffix
_set, for instance
If you do specify, e.g.
related_name=maps on the
User.map_set will still work, but the
User.maps. syntax is obviously a bit cleaner and less clunky; so for example, if you had a user object
current_user, you could use
current_user.maps.all() to get all instances of your
Map model that have a relation to
The Django documentation has more details.