Sequelize belongsTo 映射不能获得数据

[someLiang]

以下是我的代码设置

但是到user.getUserProfile()就报未定义方法的错。求帮助。

var user_models = require('../../models/user.js');
var Sequelize = require('sequelize');

var User = user_models.user;
var UserProfile = user_models.user_profile;

UserProfile.belongsTo(User, {foreignKey:'user_id', targetKey: 'user_id', as:'userProfile'});

var user = User.find(1);
user.getUserProfile();

exports.User = User;
exports.UserProfile = UserProfile;