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[英]Sequelize - Can't limit properly query with includes, using hasMany and belongsToMany associations
[英]Sequelize HasMany BelongsToMany removes old reference
我遇到一个问题,即在创建新实例时删除旧引用。 我将展示我的代码并举例说明,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,我独自创造兴趣
models.Interest.create({ value: data.value, category: data.category }).then(function(newInterest) { //allgood });
`// data保存实例所需的信息
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() {
}
});
});
}
});
`当我创造第一个一切都好的时候,看:
{"user":{"id":1,"name":"Chelo","email":"chelo@intelli.com","interests":[{"value":"kitesurf","category":"sport"}]}}
直到现在,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,将删除第一个实例的兴趣...
我究竟做错了什么?
请帮忙!!!
的确,我做错了什么。 感谢@ LT-的评论。 我会给出我改变的正确代码:
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,我已在双方,用户和兴趣上添加了belongsToMany。
希望能帮助到你。
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