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我正面临一个问题,即猫鼬查询不填充数组类型。猫鼬填充不填充数组
这里是学院的模式
'use strict';
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var InstituteSchema = new Schema({
name: String,
address: String,
city: String,
country: String,
zip: String,
owner: { type: mongoose.Schema.ObjectId, ref: 'User' },
teachers: [{type: mongoose.Schema.ObjectId, ref: 'Teacher'}],
categories: [String],
created : { type : Date, default : Date.now }
});
module.exports = mongoose.model('Institute', InstituteSchema);
这里是老师架构
'use strict';
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var TeacherSchema = new Schema({
education: [{degree: String, instituteName: String}],
dob: Date,
photoUrl: String,
phoneNumber: String,
owner: {type: mongoose.Schema.ObjectId, ref: 'User'},
institutes: [{type: mongoose.Schema.ObjectId, ref: 'Institute'}],
subjects: [{type: mongoose.Schema.ObjectId, ref: 'Subject'}],
created : { type : Date, default : Date.now }
})
module.exports = mongoose.model('Teacher', TeacherSchema);
这里是一个查询由所有者ID研究所
exports.mine = function (req, res, next) {
var ObjectId = mongoose.Types.ObjectId;
var userId = new ObjectId(req.user._id);
Institute.find({
owner: userId
}).populate('teachers').exec(function (err, institute) {
if (err) return next(err);
if (!institute) return res.json(401);
res.json(institute);
});
};
我从看到的方法db那个研究所有老师加了
db.institutes.find();
{
"_id" : ObjectId("554719a9f5be11c6d4369264"),
"owner" : ObjectId("5547199bf5be11c6d4369263"),
"country" : "USA",
"name" : "Raghvendra Singh",
"address" : "38589 Royal Ann Cmn",
"city" : "Fremont",
"zip" : "94536",
"created" : ISODate("2015-05-04T07:03:05.569Z"),
"categories" : [ "IIT", "Medical" ],
"teachers" : [ ObjectId("55471965f5be11c6d436925f") ],
"__v" : 3
}
但不知何故查询方法不填充教师集合。奇怪的是,我甚至没有收到对象id的集合,它返回并建立了空的老师数组。
而且,当我从方法调用中删除.populate('teachers')时,它确实会返回带有对象标识的教师数组。
我看着文档,我看不到我做错了什么。
''Teachers''文件在调用'mine'函数之前至少需要加载一次,才能使用Mongoose注册模型。在你调用该函数之前,你是否在某个地方加载了该模块? –
我有“var Teacher = require('../ teacher/teacher.model.js');”在具有排雷功能的文件的开头。 @BrianShamblen就是你的意思? –
是的......一切*看起来*正确。我唯一要检查的其他事情是验证存储在'teachers'数组中的ObjectId实际上是否参考了教师集合中的有效值。除此之外,我没有看到任何明显的。 –