如何将 JSON 对象数组发布到 mongodb？

Posted 2023-03-08

【中文标题】如何将 JSON 对象数组发布到 mongodb？

【英文标题】：How to post a JSON object array onto mongodb?

【发布时间】：2020-07-19 03:48:57

【问题描述】：

我正在尝试创建一个锻炼管理应用程序，它允许教练 (userType = true) 为用户创建锻炼。不幸的是，我不确定如何格式化我的 mongodb 模式以接收练习数量。我的想法是创建一个 JSON 对象数组，然后将其推送到数据库中，以便稍后显示给用户。问题是我不知道如何正确创建允许正确解析数据的表单。我决定创建几个表单，然后使用 JQuery 中的 .serializeObject() 方法将它们转换为 JSON 对象，然后将它们推送到一个数组中。但是我不知道如何将该数组推送到 mongoDB

这是我的gym.hbs文件

<div id ="createWorkout" class="hiddenWorkout workoutCreator">
      <form id="exerciseForm" class="gymFormPadding" action="/dashboard/gym" method="POST">
    <div id="exerciseInput" class="form-group" style="display:flex;width:100%">
        <input id="exerciseName" class="form-control" type="text" name="name" placeholder="Exercise Name" value=""/>        
        <input id="exerciseSets" class="form-control" type="number" name="sets" placeholder="Sets" value=""/>        
        <input id="exerciseReps" class="form-control" type="number" name="reps" placeholder="Reps" value=""/>        
        <input id="exerciseWeight" class="form-control" type="number" name="weight" placeholder="Weight" value="" /> 

      </div>
      </form>
      <div id="newExerciseAdd"></div>

    <input type="hidden" name="_csrf" value="cybersecurity">           
    <button type="button" class="btn btn-primary" id="addExerciseAdd">Add New Exercise</button>               
    <button id="submitWorkout" type="submit"  class="btn btn-primary"  name="upload">Submit Workout</button>     

    </div>

这是负责操作的 JQuery

  var counter = 1;
  $(document).ready(function()
        $("#createWorkout").click(function()
            $(".hiddenWorkout").removeClass('hiddenWorkout'); 
            $("#createWorkout").hide();
        );
    );

    $(document).ready(function()
      var i = 0;
        $("#addExerciseAdd").click(function()
          if(i<9)
            $("#exerciseForm").clone().appendTo("#newExerciseAdd");
            i++;
            $("#newExerciseAdd #exerciseForm").attr("id","exerciseForm"+i);
            $("#newExerciseAdd #exerciseInput").attr("id","exerciseInput"+i);
            $("#newExerciseAdd #exerciseName").attr("id","exerciseName"+i);
            $("#newExerciseAdd #exerciseSets").attr("id","exerciseSets"+i);
            $("#newExerciseAdd #exerciseReps").attr("id","exerciseReps"+i);
            $("#newExerciseAdd #exerciseWeight").attr("id","exerciseWeight"+i);
            counter++;
            

        );

    );


   $(document).ready(function()
      var array = [];
      var object;
      var exerciseNo = exerciseNo;
        $("#submitWorkout").click(function()
          $("#exerciseForm").attr("id","exerciseForm0");
          $("#exerciseInput").attr("id","exerciseInput0");
          $("#exerciseName").attr("id","exerciseName0");
          $("#exerciseSets").attr("id","exerciseSets0");
          $("#exerciseReps").attr("id","exerciseReps0");
          $("#exerciseWeight").attr("id","exerciseWeight0");
          for(var i=0;i<counter;i++)
          object=$("#exerciseForm"+i).serializeObject();
          array.push(object);
          
        );
        console.log(array);
    ); 

这是我的 controller.js

const mongoose = require('mongoose');
const Gym = require('../models/gym');




exports.getGymPage = async (req, res) =>

    let coachStatus = req.user.userType;
    let teamID = null;
    if(res.locals.team)teamID = res.locals.team._id   
    let exercises = await Gym.find(teamId:teamId);
    res.render('/dashboard/gym.hbs',title: "Gym",exercises : exercises, coachStatus : coachStatus, cybersecurity: `$req.csrfToken()`);
;

exports.addExercise = (req, res) =>

    const exercise = new Gym(teamID:res.locals.team._id, name: req.body.exerciseName,sets:req.body.exerciseSets,reps:req.body.exerciseReps,weight:req.body.exerciseWeight,cybersecurity: `$req.csrfToken()`).save();
    res.redirect('/dashboard/gym');

这是我的models.js

const mongoose = require('mongoose');
const  Schema  = mongoose;

const gymSchema = new Schema(
    teamID : 
        type: mongoose.Schema.ObjectId
    ,

exercises:[
    name : type:String, require: true,
    sets : [],
    reps :  type: Number, require: true,
    weight :  type: Number,,

]
);

module.exports = mongoose.model('Gym', gymSchema);

我推送文件的方法完全荒谬吗？我觉得我在转圈，却无处可去。有更好的方法吗？ 请原谅我最可能的可怕代码，我才刚刚开始。 谢谢！

【参考方案1】：

MongoDB 应该知道它是一个数据数组。您是否尝试过通过这样做来访问练习，例如...：

const exercise = req.body.exercise[0].name;
const exerciseData = JSON.parse(exercise);

然后推送，你可以使用常规的 array.push 我不完全了解您要做什么，但是希望这可以有所帮助...