"从模型 Python 返回数据"

Question

我用来管理数据库flask<\/code>和SQLAlchemy<\/code> ，我有以下模型：

from .. import db
from datetime import datetime

class Todo(db.Model):
    __tablename__ = 'todo'
    __table_args__ = {"schema": "5martstudio"}

    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.Text, nullable=False)
    when = db.Column(db.DateTime, nullable=False)
    created_at = db.Column(db.DateTime, nullable=True, default=datetime.utcnow())
    updated_at = db.Column(db.DateTime, nullable=True, default=datetime.utcnow())

    def __init__(self, name, when):
        self.name = name
        self.when = when
        self.created_at = datetime.utcnow()
        self.updated_at = datetime.utcnow()

    def __repr__(self):
        return "<Todo (id='%s', name='%s', when='%s', created_at='%s', updated_at='%s')>" % (self.id, self.name, self.when, self.created_at, self.updated_at)