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我试图适应这里的例子为什么MongooseJS不能正确填充我的字段?
http://mongoosejs.com/docs/populate.html
我已删除的故事,我试图添加一个“朋友”字段,而不是。我的代码如下
var PersonSchema = new Schema({
name : String
, age : Number
, friends : [{ type: Schema.ObjectId, ref: 'Person' }]
});
var Person = mongoose.model('Person', PersonSchema);
var aaron = new Person({ name: 'Aaron', age: 100 });
var bill = new Person({ name: 'Bill', age: 97 });
aaron.save(function (err) {
if (err) throw err;
bill.save(function(err) {
if (err) throw err;
var charlie = new Person({ name: 'Charlie', age: 97, friends: [aaron._id, bill._id] });
charlie.save(function(err) {
if (err) throw err;
Person
.findOne({name: 'Charlie'})
.populate('friends')
.run(function(err, friends) {
if (err) throw err
console.log('JSON for friends is: ', friends);
db.disconnect();
});
});
});
});
它打印出以下文字
JSON for friends is: { name: 'Charlie',
age: 97,
_id: 4fb302beb7ec1f775e000003,
stories: [],
friends:
[ { name: 'Aaron',
age: 100,
_id: 4fb302beb7ec1f775e000001,
stories: [],
friends: [] },
{ name: 'Bill',
age: 97,
_id: 4fb302beb7ec1f775e000002,
stories: [],
friends: [] } ] }
换句话说,它是印刷出来的“查理”的对象。我期望的功能是让MongooseJS在friends字段中使用ObjectIds,并用匹配对象(aaron和bill)填充数组。换句话说,更多沿线的东西
[ { name: 'Aaron',
age: 100,
_id: 4fb302beb7ec1f775e000001,
stories: [],
friends: [] },
{ name: 'Bill',
age: 97,
_id: 4fb302beb7ec1f775e000002,
stories: [],
friends: [] } ]
我在做什么错?