ForeignKey fields, PydanticMeta - include should include the submodel

class User(Model):
    id = fields.IntField(pk=True)
    username = fields.CharField(max_length=30, unique=True)
    status = fields.ForeignKeyField('myapp.UserStatus')

    class PydanticMeta:
        include= ("username", "status_id") # Working
        include= ("username", "status") # ERROR

As shown in the above example, it is not possible to decide to include the status model, you can just include the status_id.
A workaround is to use exclude("id"), this will return the username and status model as desired.

Start by reproducing the User model example and trace how PydanticMeta include handles ForeignKey fields. Verify the behavior against the existing exclude("id") workaround; done means including "status" returns the related status model rather than only allowing "status_id".