What is choice_set in this Django app tutorial?
You created a foreign key on Choice
which relates each one to a Question
.
So, each Choice
explicitly has a question
field, which you declared in the model.
Django's ORM follows the relationship backwards from Question
too, automatically generating a field on each instance called foo_set
where Foo
is the model with a ForeignKey
field to that model.
choice_set
is a RelatedManager
which can create querysets of Choice
objects which relate to the Question
instance, e.g. q.choice_set.all()
If you don't like the foo_set
naming which Django chooses automatically, or if you have more than one foreign key to the same model and need to distinguish them, you can choose your own overriding name using the related_name
argument to ForeignKey
.