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一直在阅读SQLAlchemy的文档,我无法理解这一点。考虑以下设置:从子表中筛选结果
boardset_user_association_table = db.Table('boardset_user_association',
db.Column('user_id', db.Integer, db.ForeignKey('user.id')),
db.Column('boardset_id', db.Integer, db.ForeignKey('boardset.id'))
)
class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(20), unique=True)
password = db.Column(db.String(30))
boardSet = db.relationship('BoardSet', secondary=boardset_user_association_table, backref='user')
def __repr__(self):
return "<User('%s','%s')>" % (self.username, self.id)
class BoardSet(db.Model):
__tablename__ = 'boardset'
id = db.Column(db.Integer, primary_key=True)
created = db.Column(db.DateTime)
boards = db.relationship('Board', backref='boardset', lazy='dynamic')
def __repr__(self):
return "<BoardSet('%s','%s')>" % (self.id, self.created)
我从用户对象项目的集合,但我无法对实际数据进行任何过滤等。我想,例如在某些情况下,从User.boardSet由值字段中创建
太感谢了之后..知道我错过了什么! – StefanE 2012-07-19 09:19:05