Question

我正在使用具有多对多关系的Flask-SQLAlchemy。而且我尝试从用户中删除当前用户，但我只收到en错误，如主题所示。我做错了我不明白。预先感谢您的帮助

我的以下型号：

subs = db.Table('subs',
            db.Column('user_id', db.Integer, db.ForeignKey('user.id')),
            db.Column('request_id', db.Integer, db.ForeignKey('request.id'))
            )

class User(UserMixin, db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(120))
    role = db.Column(db.String(120))
    password_hash = db.Column(db.String(120))
    requests = db.relationship('Request', secondary=subs, backref=db.backref('users', lazy='dynamic'))

class Request(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    org = db.Column(db.String(120))
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    cost = db.Column(db.Integer)
    created = db.Column(db.DateTime, default= datetime.utcnow)
    cost_time = db.Column(db.DateTime, default = datetime.utcnow)

我要删除的表格：

class Remove(FlaskForm):
    remove = IntegerField('delete request')
    submit = SubmitField('delete')

我的路线：

@app.route('/delete', methods = ['GET', 'POST'])
def delete():
    form = Remove()
    if form.validate_on_submit():
        request = Request.query.get(form.remove.data)
        request.users.remove(current_user)
        db.session.commit()
        return redirect('index')
    return render_template('remove.html', form=form, id=id)

表'subs'的DELETE语句预期会删除1行；只有2个被匹配

0 个答案: