How Does `related_name` Simplify Access to Related Models in Django's `ManyToManyField` and `ForeignKey`?

Applying Related_name to ManyToManyField and ForeignKey for Simplified Access

Question:

What is the purpose of the related_name argument for ManyToManyField and ForeignKey fields? Consider the example below:

class Map(db.Model):
    members = models.ManyToManyField(User, related_name='maps',
                                     verbose_name=_('members'))

What is the effect of defining related_name='maps' on the User model?

Answer:

The related_name attribute defines the name of the reverse relationship from the referenced model (in this case, User) back to the current model (Map). Typically, Django automatically creates a reverse relationship with the suffix _set, but specifying a custom related_name provides a more succinct way to access the related objects.

In the provided example, if we have a User object named current_user, we can access the maps associated with it using current_user.maps.all(). This is more convenient than the default reverse relationship syntax, which would be current_user.map_set.all().

The related_name can also be set to ' ' to disable creating the reverse relationship completely.

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