我有一个包含这种形式的文档的集合:{"_id":ObjectId("50f81542a63cfa27fca7df43"),"_t":"ClockRecord","ClockName":"AAA-TEST123-002","IngestionDateTime":ISODate("2013-01-17T15:14:10.757Z"),"FilesList":[{"FileName":"AAA-TEST123-002.mpg","FileStatus":"Arriving",},{"FileName":"AAA-TEST123-002.aiff","FileStatus":"Arriving
我正在构建一个在不同网页之间轮换的仪表板。我想拉出属于“测试”平台的所有幻灯片并适本地对其进行排序。查询后，我的结果理想情况下是这样的。[{"url":"http://10.0.1.187","position":1,"duartion":10},{"url":"http://10.0.1.189","position":2,"duartion":3}]我目前有一个如下所示的数据集{"_id":ObjectId("53a612043c24d08167b26f82"),"url":"http://10.0.1.189","decks":[{"title":"Test","position
我正在尝试从MongoDB中的数组中获取一个元素。我认为聚合过滤器是适用的。但是我已经尝试了百万次，我仍然找不到问题出在哪里。你能Handlebars给我吗？MongoDB示例数据:{"_id":12,"items":[{"columns":[{"title":"hhh","value":10},{"title":"hahaha","value":20}]},{"columns":[{"title":"hiii","value":50}]}]}我的解决方案:db.myCollection.aggregate([{$project:{items:{$filter:{input:"$ite
{"_id":ObjectId("5a4e43edb85ed11cd4dcba45"),"email":"av@gmail.com","username":"alpesh","subscriptions":[{"sub_id":"5a4df654b9799b79147f9361","activation_date":ISODate("2017-12-19T18:30:00.000Z"),"expiry_date":ISODate("2018-01-19T18:30:00.000Z")},{"sub_id":"5a4df654b9799b79147f9361","activation_d
我有一个文档存储在mongodb中:shop:{_id:'...'title:'myshop'users:[{_id:'...',name:'user1',username:'...'},{_id:'...',name:'user2',username:'...'}]}我使用此查询通过他的id获取子文档用户:Shop.findOne({'users._id':userId},{'users.$':1},function(err,user){console.log(user);});输出:{_id:...,users:[{name:'user1',username:'...',_id:.
我有以下模型:varVoteSchema=newSchema({up:Boolean,createdBy:{type:ObjectId,ref:'users'},createdOn:{type:Date,default:Date.now}});varQuestionSchema=newSchema({title:String,description:String,votes:[VoteSchema],createdBy:{type:ObjectId,ref:'users'},createdOn:{type:Date,default:Date.now}});varQuestion=mon
有一些关于此的帖子(例如here和here)，但它们都没有为此使用nativeMongoose方法。(第一个使用$set，第二个使用extendnpm包。不过似乎应该有一种“原生Mongoose”方式来做到这一点。架构:varblogPostSchema=newmongoose.Schema({title:String,comments:[{body:String}]});这是我最初尝试的:BlogPost.findById(req.params.postId,function(err,post){varsubDoc=post.comments.id(req.params.commen
我的Mongo集合具有以下形式的文档:{..."notifications":[{"enabled":true,"groups":["NG1","NG3"]},{"enabled":false,"groups":[]}]}其中enabled是bool值，groups是字符串列表。我需要执行查询以确定notifications中有多少条目具有enabled=true并在groups中包含给定字符串(例如NG3).以前，没有enabled属性(稍后根据要求引入)，我的查询很简单db.collection.find({"notifications.groups":"NG3"})我尝试了一些与
我有一个JSON对象，我想创建一个使用mongoose的模式{ProjectName:'asdf',Embargo:'Yes',Angle:'1',Facts:'[{"count":1,"fact":"dsafdsaf","content":"dsafdsaf"},{"count":3,"fact":"dsafdsaf","content":"dsafdsaf"},{"count":2,"fact":"dsafdsaf","content":"dsafdsaf"}]',About:'AnthonyBodin ',EditorNo
我想推送到Mongoose/MongoDB子文档中的数组。这是架构:varUsersSchema=newmongoose.Schema({user:String,stream:String,author:String,tags:Array,thumb:Number,added:Number})varContentSchema=newmongoose.Schema({title:String,url:String,description:String,text:String,users:[UsersSchema]})我想将一个数组放入特定users子文档的UserSchema.tags数
