在猫鼬的子数组中获取具有匹配对象的对象

Posted 2023-03-10

【中文标题】在猫鼬的子数组中获取具有匹配对象的对象

【英文标题】：get object with the matching objects in sub array in mongoose

【发布时间】：2022-01-24 05:45:45

【问题描述】：

数据库中的数据存储：

    "_id": "61c1c0efc204bb170e280d2f",
    "title": "Searching Relevant Cases",
    "question": "Your Industry",
    "vendor_id": "61b8324040fb21d80f3e6702",
    "answer_type": "is_radio",
    "optional_answer": false,
    "sub_question_type": "none",
    "view": "list_view",
    "is_active": true,
    "is_delete": false,
    "sub_question": [],
    "draggable_list": [],
    "__v": 0
,

    "_id": "61c1c142c204bb170e280d45",
    "title": "Searching Relevant Cases",
    "question": "Employee size",
    "vendor_id": "61b8324040fb21d80f3e6702",
    "answer_type": "is_radio",
    "optional_answer": false,
    "sub_question_type": "none",
    "view": "list_view",
    "is_active": true,
    "is_delete": false,
    "sub_question": [],
    "draggable_list": [],
    "__v": 0
,

    "_id": "61c1c24ac204bb170e280d5e",
    "title": "Dependent",
    "question": "On previous Chosen option",
    "vendor_id": "61b8324040fb21d80f3e6702",
    "answer_type": "is_radio",
    "optional_answer": false,
    "sub_question_type": "has_parent",
    "sub_question": [
        
            "question_id": "61c1c0efc204bb170e280d2f",
            "_id": "61c1c24ac204bb170e280d5f",
            "answer": "Bank"
        ,
        
            "question_id": "61c1c142c204bb170e280d45",
            "_id": "61c1c24ac204bb170e280d60",
            "answer": "SMB (<100)"
        
    ],
    "view": "list_view",
    "is_active": true,
    "is_delete": false,
    "draggable_list": [],
    "__v": 0
,

    "_id": "61c1c2d7c204bb170e280d7e",
    "title": "Dependent 1",
    "question": "On previous Chosen option 1",
    "vendor_id": "61b8324040fb21d80f3e6702",
    "answer_type": "is_radio",
    "optional_answer": false,
    "sub_question_type": "has_parent",
    "sub_question": [
        
            "question_id": "61c1c142c204bb170e280d45",
            "_id": "61c1c2d7c204bb170e280d7f",
            "answer": "Mid (100 - 1000)"
        ,
        
            "question_id": "61c1c0efc204bb170e280d2f",
            "_id": "61c1c2d7c204bb170e280d80",
            "answer": "Tech"
        
    ],
    "view": "list_view",
    "is_active": true,
    "is_delete": false,
    "draggable_list": [],
    "__v": 0

查询参数为：

obj: 
    "question_id": "61c1c0efc204bb170e280d2f",
    "answer": "Bank"
,
obj1: 
    "question_id": "61c1c142c204bb170e280d45",
    "answer": "SMB (<100)"

我期待的结果是：

    "_id": "61c1c24ac204bb170e280d5e",
    "title": "Dependent",
    "question": "On previous Chosen option",
    "vendor_id": "61b8324040fb21d80f3e6702",
    "answer_type": "is_radio",
    "optional_answer": false,
    "sub_question_type": "has_parent",
    "sub_question": [
        
            "question_id": "61c1c0efc204bb170e280d2f",
            "_id": "61c1c24ac204bb170e280d5f",
            "answer": "Bank"
        ,
        
            "question_id": "61c1c142c204bb170e280d45",
            "_id": "61c1c24ac204bb170e280d60",
            "answer": "SMB (<100)"
        
    ],
    "view": "list_view",
    "is_active": true,
    "is_delete": false,
    "draggable_list": [],
    "__v": 0

我在 *** 上从用户（用户：14732669）那里得到的答案是： https://mongoplayground.net/p/pAV76ctwhfC 此查询正在运行，但不返回结果对象，而是返回两个对象。

我必须为 sub_question 数组中的两个对象匹配 question_id 以及 (obj and obj1) 的答案

【参考方案1】：

$match

db.collection.aggregate([
  
    "$match": 
      "$and": [
        
          "sub_question.question_id": "61c1c0efc204bb170e280d2f",
          "sub_question.answer": "Bank"
        ,
        
          "sub_question.question_id": "61c1c142c204bb170e280d45",
          "sub_question.answer": "SMB (<100)"
        
      ]
    
  
])

mongoplayground

【讨论】：

@MunamRamay 接受这个答案，投票会很棒。