Javascript 使用meteor时使用嵌套数组的$pull-in mongoDB

问题概述

创建用户时，预定义部门和相应类别（本质上是子部门）的列表将与其帐户关联

此部门和类别列表显示在用户/类别页面上（按部门分组）

然后，用户可以根据需要添加/编辑/删除部门和添加/删除类别

我的问题是，我不确定最初构造数据的最佳方法。然后，无论我用哪种方式，我都会在mongoDB查询中遇到麻烦

问题详细信息 我尝试在调用onCreateUser时以2种方式添加预定义的部门/类别数据，它们成功地添加到mongoDB

（我还研究了将信息放入用户帐户和user.profile的顶层）

单独收藏

XXXXXXXXXXXXX

Categories.insert({
          "user": userId,
          "categories": [
      {
         "department": "Kitchen",
         "items": [
            "meat",
            "dairy",
            "fish",
            "dry goods",
            "ACME supplies"
         ]
      },
      {
         "department": "Bar",
         "items": [
            "whiskey",
            "red wine",
            "white wine",
            "champagne & sparkling"
         ]
      }
    ]
    });

在使用以下结构的单独集合中：

XXXXXXXXXX

Categories.insert({
         "user": "userId",
         "categories": [
          {
             "department": "Kitchen",
             "item": "meat"
          },
          {
             "department": "Kitchen",
             "item": "dairy"
          },
          {
             "department": "Kitchen",
             "item": "fish"
          },
          {
             "department": "Kitchen",
             "item": "dry goods"
          },
          {
             "department": "Bar",
             "item": "whiskey"
          },
          {
             "department": "Bar",
             "item": "red wine"
          },
          {
             "department": "Bar",
             "item": "white wine"
          },
          {
             "department": "Bar",
             "item": "champagne & sparkling"
          }
       ]
    });

XXXXXXXXXX

Categories.insert({
         "user": "userId",
         "categories": [
          {
             "department": "Kitchen",
             "item": "meat"
          },
          {
             "department": "Kitchen",
             "item": "dairy"
          },
          {
             "department": "Kitchen",
             "item": "fish"
          },
          {
             "department": "Kitchen",
             "item": "dry goods"
          },
          {
             "department": "Bar",
             "item": "whiskey"
          },
          {
             "department": "Bar",
             "item": "red wine"
          },
          {
             "department": "Bar",
             "item": "white wine"
          },
          {
             "department": "Bar",
             "item": "champagne & sparkling"
          }
       ]
    });

使用1。在上面和下面的助手中，我可以对数据进行迭代，并按部门对它们进行分组

`Template.categoriesPage.helpers({
 getCategories: function(){
      var userId = Meteor.userId();
      var categoriesList = Categories.findOne({
            user: userId
        });
        console.log(categoriesList);
        var categories = categoriesList && categoriesList.categories;

      return categories;

    } 
  });`

以下是模板：

<template name="categoriesPage">
    <div class="ui dividing header">
        <h3 class="ui header">My Categories</h3>
    </div>
    <div class="ui grid">
        {{#each getCategories}}
        <div class="five wide column">
            <table class="ui single line  table">
                <thead>
                    <tr>
                        <th>{{department}}</th>
                        <th class="right aligned"><span style="color:black" class="label-important label removeDepartment"><i class="remove icon large red"></i></span></th>
                    </tr>
                </thead>
                <tbody>
                    {{#each items}}
                    <tr>
                        <td>{{this}}</td>
                        <td class="right aligned"><span style="color:black" class="label-important label removeCategory"><i class="remove icon red"></i></span></td>
                    </tr>
                    {{/each}}
                </tbody>
                <tfoot>
                    <tr>
                        <th></th>
                        <th>Add Cat.</th>
                    </tr>
                </tfoot>
            </table>
        </div>
        {{/each}}
    </div>
    <form class="ui form">
        <input type="submit" value="Submit" class="ui teal button submit"/>
    </form>
</template>

以下是我在服务器上的方法：

    `removeDepartment: function(userId, department) {
        check(userId, String);
        check(department, String);
        Categories.update({user:userId},{ $pull: { categories: { department:department}}});
        console.log('successfully deleted');
    },
    removeCategory: function(userId, item) {
        check(userId, String);
        check(item, String);
         Categories.update({user:userId, "categories.department":department},{ $pull: { "categories.$.items":item}});
        console.log('successfully deleted');
    }`

这样的模式会起作用吗

`var kitchenId = Categories.insert({user: userId, department:"kitchen"});
Categories.insert({item:"dairy",parent:kitchenId});
Categories.insert({item:"dry goods",parent:kitchenId});
Categories.insert({item:"meat",parent:kitchenId});
Categories.insert({item:"fish",parent:kitchenId});

var barId = Categories.insert({user: userId, department:"bar"});
Categories.insert({item:"vodka",parent:barId});
Categories.insert({item:"whiskey",parent:barId});
Categories.insert({item:"white wine",parent:barId});
Categories.insert({item:"red wine",parent:barId});`

如对最佳实践有任何建议，将不胜感激。请记住，我将需要能够编辑部门和添加部门和类别。我还需要将部门和类别输入到动态下拉列表中

提前感谢你的帮助