在项目 algorithm_submit 中:
查询给定用户的角色:
>>> Role.query.join(User, Role.id == User.role_id).filter_by(email = '1074976039@qq.com')
<flask_sqlalchemy.BaseQuery object at 0x0000000004D57198> >>> Role.query.join(User, Role.id == User.role_id).filter_by(email = '1074976039@qq.com').first() <Role 'Administrator'>待查资料…