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Problem Background

1. The following two schemas

   Columns: {
       active: Boolean,
       name: String
   }
   
   News: {
       column: {type: Schema.Types.ObjectId, ref: 'columns'},
       title: String,
       content: String
   }

2. column Medium active has the requirement to be modified by the configuration, and the news table has a large number of insertion requirements

Problem Description

1. How to perform paging query on news, and the query condition is column.active is true?

2. How to count the query conditions?

Solution attempt

1.

   News.find().populate({
       path: 'column',
       match: { active: true }
   }).limit(10).skip(0).exec(function(err, news) {
       if (err) {
           console.log(err);
       } else {
           console.log(news);
       }
   });

輸出結(jié)果：

news:[
  {
    "title": "這篇資訊的所屬欄目正在開放",
    "column": {
      "active": true,
      "createdAt": "2017-04-11T10:35:29.747Z",
      "id": "58ecc960a4db1e3fc01c2d6d"
    },
    "updatedAt": "2016-11-29T08:55:42.000Z",
    "id": "5923ab21415f8f3bc43f8515"
  },
  {
    "title": "這篇資訊的所屬欄目已被屏蔽",
    "column": null,
    "updatedAt": "2016-11-29T08:47:18.000Z",
    "id": "5923ab21415f8f3bc43f83bd"
  }
]

期望獲取的結(jié)果是只有column中active為true的數(shù)據(jù)
嘗試失敗