form_choices doesn't work

can_post = [(x.id, x.nickname) for x in
                User.query.filter_by(role=USER_ROLES['admin'])]
    form_args = dict(
        author=dict(
            default=User.query.filter_by(role=USER_ROLES['admin']).first()
        ))
    form_choices = {'author': can_post}

Form choices are not updated. I validated that can_post is a list with only the admin users, yet all users still show on the dropdown. I also have another site with similar code that doesn’t work either.

[petrus-jvrensburg]

We should make the query_factory more prominent in the docs. It seems like a pretty common thing to do.

[pawl]

In flask-admin, you can override query_factory with form_args to change the query used to get select field choices:

def cars_with_test_desc():
    return Car.query.filter_by(desc="test")

class TyreAdmin(sqla.ModelView):
    column_display_pk = True
    can_view_details = True
    form_args = dict(
        car=dict(
            query_factory=cars_with_test_desc
        )
    )
    form_columns = ['car', 'tyre_id', 'desc']

https://github.com/flask-admin/flask-admin/blob/master/examples/sqla/app2.py