我有以下架构:
let User = new Schema({
email: {
type: String,
required: true
},
password: {
type: String,
required: true
},
firstName: {
type: String,
required: false
},
lastName: {
type: String,
required: false
},
templates: {
type: Schema.Types.ObjectId,
ref: 'TemplateInstance',
required: false
}
},{
collection: 'users',
timestamps: true
});
以及以下猫鼬代码:
exports.getUsers = (req, res) => {
User.find((err, users) => {
if(err)
return res.status(400).json( { 'users_get_all': 'failure', 'err': err } );
return res.status(200).json( { 'users_get_all': 'success', 'users': users } );
});
};
最初,每个用户文档在“模板”字段中都没有任何内容,因为在用户创建帐户后,即可以将模板附加到该帐户。我已经将一些模板ObjectID手动添加到某些用户的“模板”字段中,但是当我运行getUsers()函数时,将返回用户文档,但没有“模板”字段:
{"users_get_all":"success","users":[{"_id":"5b39f9da294d041b58f97cb3","email":"testemail@email.com","password":"password","firstName":"firstName","lastName":"lastName","createdAt":"2018-07-02T10:09:30.400Z","updatedAt":"2018-07-02T10:21:34.579Z","__v":0},{"_id":"5b39ff5723d93c17bc00eabf","email":"testemail2@email.com","password":"password","firstName":"firstName2","lastName":"lastName2","createdAt":"2018-07-02T10:32:55.308Z","updatedAt":"2018-07-02T10:32:55.308Z","__v":0}]}
如果我用Studio 3T之类的东西查看MongoDB,则模板数组中肯定有对象ID,这些对象ID引用了模板集合中的模板。
您知道为什么不返回“模板”字段吗?
答案 0 :(得分:2)
如下更新您的架构:
let User = new Schema({
email: {
type: String,
required: true
},
password: {
type: String,
required: true
},
firstName: {
type: String,
required: false
},
lastName: {
type: String,
required: false
},
templates: [{
type: Schema.Types.ObjectId,
ref: 'TemplateInstance',
required: false
}]
},{
collection: 'users',
timestamps: true
});
就像在数据库中一样,您在数组中有模板,并且在架构中将其声明为对象。