如何在mongodb中更新子文档模式结构中的数组字段

TaskInfo架构：

var mongoose = require('mongoose'); var Schema = mongoose.Schema; var taskInfo = mongoose.Schema({ isactive:{type:Boolean}, taskobject:{type:String}, taskdetails:{type:String}, iscompleted:{type:Boolean} }); var TaskInfo = mongoose.model('TaskInfo', taskInfo); module.exports.TaskInfo = TaskInfo; module.exports.TaskInfoSchema = taskInfo; 

TaskSchema：

 var mongoose = require('mongoose'); var TaskInfoSchema = require("./taskinfo.js").TaskInfoSchema var Schema = mongoose.Schema; // Task schema var taskSchema = mongoose.Schema({ tasktype : {type: String}, createdon : {type: Date, default: Date.now}, //createdby : {type: Schema.Types.ObjectId,ref: 'User'}, //visitedby : [{type: Schema.Types.ObjectId,ref: 'User'}], taskinfo : [TaskInfoSchema] }); module.exports = mongoose.model('Task', taskSchema); 

这里是路由文件/控制器：

 var TaskInfo = require('../models/taskinfo.js').TaskInfo; var Task = require('../models/task.js'); var config = require('../../config'); module.exports = function (app, express) { var api = express.Router(); //GET method is for fetching all the tasks from the database, api.get('/taskdb', function (req, res) { //console.log("____"); Task.find({}, function (err, taskdb) { if (err) { res.send(err); return; } res.json(taskdb); }); }); //POST method is for saving all the tasks to the database, api.post('/tasks', function (req, res) { var task = {}; task.tasktype = req.body.tasktype; task.taskinfo = []; for (var i = 0; i < req.body.taskInfo.length; i++) { console.log(i); var taskInfo = new TaskInfo(req.body.taskInfo[i]); task.taskinfo.push(taskInfo); } var taskObj = new Task(task); taskObj.save(function (err) { if (err) { res.send(err); return; } res.json({ message: 'Task has been created' }) }); }); return api } 

我试图添加REST API来更新每次面对错误的值，有人请告诉我如何更新数组，请给我build议一些很好的资源，如果你发现它太基本，不应该在这里问。

这里是我的代码更新操作：

 api.use('/tasks/:taskId',function(req, res, next){ Task.findById(req.params.taskId, function(err, task){ if(err){ res.send(err); return; } else if(task) { req.task = task; next(); } else { res.status(404).send ('no task found with such details'); } }); }); api.patch ('/tasks/:taskId',function(req,res){ if(req.body._id) delete req.body._id; for(var p in req.body) { req.tasktype[p] = req.body[p]; } for(var p in req.body) { req.taskInfo[p] = req.body[p]; } req.taskobj.save(function(err){ if(err){ res.send(err); return; } res.json({message:'Task edited & updated '}) }); }); 

Answer 1

您可以使用$ set操作符更新文档

1）如果你想在子文档id的基础上更新子文档

 var id = taskInfoId; here i am going to update field "isactive" of particular taskinfo Task.update({"taskinfo._id":id},{$set:{"isactive":true}},function(err,success){ if(err){ }else{ } }); 

2）如果你想根据父文档id更新子文档，那么

 var taskId = taskId; Task.update({"_id":taskId},{$set:{"isactive":true}},function(err,success){ if(err){ }else{ } });