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我想推到Mongoose/MongoDB中的子文档内的数组。推送到子文档中的猫鼬
这里是模式:
var UsersSchema = new mongoose.Schema({
user: String,
stream: String,
author: String,
tags: Array,
thumb: Number,
added: Number
})
var ContentSchema = new mongoose.Schema({
title: String,
url: String,
description: String,
text: String,
users: [ UsersSchema ]
})
我想推阵列到阵列UserSchema.tags
用于特定users
子文档。
我已经试过这几个变化:https://stackoverflow.com/a/19901207/2183008
默认情况下,我的前端角应用正在发送标记为对象的数组。所以这是
[ { 'text': TAG_STRING_HERE } ]
or
[ { 'text': TAG_STRING_HERE }, { 'text': TAG2_STRING_HERE } ]
但我也尝试了使用和字符串,这我没事做的数组;如果对象是由于某种原因的问题。
我已经试过这样:
var tags = req.body.tags,
contentId = mongoose.Types.ObjectId(req.body.id)
Content.update(
{ 'users._id': contentId },
{ $push: { 'users.tags': { $each: tags } } }
).exec()
.then(function (result) {
console.log(result)
resolve(result)
}, function (error) {
if (error) return reject(error)
})
这给了我这个错误:
{ [MongoError: cannot use the part (users of users.tags) to traverse the element ({users: [ { user: "54f6688c55407c0300b883f2", added: 1428080209443.0, stream: "watch", _id: ObjectId('551ec65125927f36cf4c04e9'), tags: [] }, { user: "54f6688c55407c0300b883f2", added: 1428080222696.0, stream: "listen", _id: ObjectId('551ec65e25927f36cf4c04ea'), tags: [] } ]})]
name: 'MongoError',
code: 16837,
err: 'cannot use the part (users of users.tags) to traverse the element ({users: [ { user: "54f6688c55407c0300b883f2", added: 1428080209443.0, stream: "watch", _id: ObjectId(\'551ec65125927f36cf4c04e9\'), tags: [] }, { user: "54f6688c55407c0300b883f2", added: 1428080222696.0, stream: "listen", _id: ObjectId(\'551ec65e25927f36cf4c04ea\'), tags: [] } ]})' }
什么是标签数组元素的数据类型? – chridam 2015-04-03 08:40:03
默认情况下,它是一个对象数组,但我也尝试过一串字符串。对象就像这个'[{text:TAG_STRING_HERE},{...}]'。 – Noah 2015-04-03 16:21:08