Sequelize HasMany BelongsToMany 删除旧引用

Question

我遇到了一个问题，即在创建新实例时旧引用被删除。我会展示我的代码并举个例子，我做错了什么？

var Users = sequelize.define('Users', { id: { type: DataTypes.INTEGER, autoIncrement: true, primaryKey: true }, name: DataTypes.STRING, email: DataTypes.STRING }, { classMethods: { associate: function(models) { Users.hasMany(models.Interest,{ as: 'interests'}); } } } );

...

var Interest = sequelize.define('Interest', { category: DataTypes.STRING, value: DataTypes.STRING }, { classMethods: { associate: function(models) { Interest.belongsToMany(models.Users, {through: 'UsersInterest'}); } } });

首先我自己创造兴趣

models.Interest.create({ value: data.value, category: data.category }).then(function(newInterest) { //allgood });

` //data保存实例需要的信息

models.Users.create({
  name: data.name,
  email: data.email

}).then(function(newUser) {
    //data interest contains the interest to find and add
    for (var i = 0; i < data.interests.length; i++) {
      models.Interest.findOne({
        where: { value: data.interests[i].value, category: data.interests[i].category},
      }).then(function(interest) {
          newUser.addInterest(interest).then(function() {
          }
        });
      });
    }
  });

` 当我创建第一个时一切都很好，看：

{"user":{"id":1,"name":"Chelo","email":"chelo@intelli.com","interests":[{"value":"kitesurf","category":"sport"}]}}

到目前为止，一切都很好，在我添加第二个之后..

{"user":{"id":1,"name":"Chelo","email":"chelo@intelli.com","interests":[]}} {"user":{"id":2,"name":"CACA Cavazzoli",email":"chelo@intelli.com","interests":[{"value":"kitesurf","category":"sport"}]}}]}

当我创建具有相同兴趣的第二个实例时，第一个实例的兴趣被删除...

我做错了什么？

请帮忙！！！

Answer 1

确实是我做错了。感谢@LT- 的评论。我会给出我更改的正确代码：

var Users = sequelize.define('Users', { id: { type: DataTypes.INTEGER, autoIncrement: true, primaryKey: true }, name: DataTypes.STRING, email: DataTypes.STRING }, { classMethods: { associate: function(models) { Users.belongsToMany(models.Interest,{ as: 'interests', through: 'UsersInterest'}); } } } );

基本上，我在用户和兴趣两边都添加了 belongsToMany。

希望对您有所帮助。

Sequelize HasMany BelongsToMany 删除旧引用

Sequelize HasMany BelongsToMany removes old reference

javascript

sql

postgresql

node.js

sequelize.js