javascript - 如何更新 mongodb 中子文档架构结构中的数组字段

Question

任务信息架构:

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;

任务架构:

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); 

这是路由文件/ Controller :

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
}

我正在尝试添加 REST api 来更新值，每次遇到错误时，请有人告诉我数组是如何更新的，如果您发现它太基础并且不应该在这里询问，请建议我一些好的资源。

这是我的更新操作代码:

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 运算符更新文档

1) 如果你想根据子文档id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) 如果您想根据父文档 ID 更新子文档，则

var taskId = taskId;

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

    }
    });