How to correctly use foreign key in models?

Question

Django

am I using the foreign key correctly here? (the user will have one of the roles - admin, moderator, etc.)

class Role(models.Model):
    id_role = models.AutoField(primary_key=True)
    ...

class User(models.Model):
    id_user = models.AutoField(primary_key=True)
    ...
    id_role = models.ForeignKey(Role)

Answer 1

Right

Answer 2

id is not needed. Django ORM adds them automatically.
You can have many Users per Role, but each User can only have one Role.
If I understand correctly what you want, then you need models.ManyToManyField(Role)

Answer 3

everything is correct in your example. only it is described in docks!!!! with examples...