Question

这是我的文档架构。

   const smartpeepeeSchema = new Schema({
        owner: {
            type: mongoose.Types.ObjectId,
            required: true,
            ref: 'User',
        },
        baby: {
            type: mongoose.Types.ObjectId,
            required: true,
            ref: 'Baby'
        },
        data: [
            {
                _id: {
                    autoIndex: false
                },
                serialNumber: {
                    type: String,
                },
                macAddress: {
                    type: String,
                },
                firmware: {
                    type: String,
                },
                createdAt: {
                    type: Date,
                },
                humidity: {
                    type: Number,
                },
                temperature:{
                  type:Number
                },
                type:{
                    type:String
                }
            }
        ]
    });

这些存储在mongodb中的createdAt日期。

{ _id: 5c73e430ab6f3242b5c141c3,
  owner: 5c73c2e039ecd63e0edfebf1,
  baby: 5c73c2ea39ecd63e0edfebf2,
  data:[ 
      {createdAt: 2019-02-25T12:48:48.499Z,
       temperature: 23.2891,
       humidity: 1.82187,
       serialNumber: '01202117082100191',
       macAddress: 'D2:6A:95:5E:48:6E',
       firmware: '233',
       type: 'diaper' },
     { createdAt: 2019-02-25T12:48:48.499Z,
       temperature: 62.2587,
       humidity: 19.0473,
       serialNumber: '01202117082100191',
       macAddress: 'D2:6A:95:5E:48:6E',
       firmware: '233',
       type: 'diaper' },
     { createdAt: 2019-02-25T12:48:48.499Z,
       temperature: 19.8427,
       humidity: 68.2203,
       serialNumber: '01202117082100191',
       macAddress: 'D2:6A:95:5E:48:6E',
       firmware: '233',
       type: 'diaper' },
     { createdAt: 2019-02-25T12:48:48.499Z,
       temperature: 55.5166,
       humidity: 14.4124,
       serialNumber: '01202117082100191',
       macAddress: 'D2:6A:95:5E:48:6E',
       firmware: '233',
       type: 'diaper' } 
],
  __v: 0 }

我想要这样的结果吗？

 {createdAt: specific date,
           temperature: 23.2891,
           humidity: 1.82187,
           serialNumber: '01202117082100191',
           macAddress: 'D2:6A:95:5E:48:6E',
           firmware: '233',
           type: 'diaper' },
         { createdAt: specific date,
           temperature: 62.2587,
           humidity: 19.0473,
           serialNumber: '01202117082100191',
           macAddress: 'D2:6A:95:5E:48:6E',
           firmware: '233',
           type: 'diaper' },
         { createdAt: specific date,
           temperature: 19.8427,
           humidity: 68.2203,
           serialNumber: '01202117082100191',
           macAddress: 'D2:6A:95:5E:48:6E',
           firmware: '233',
           type: 'diaper' },

**>我要检索特定日期的数据。

如果客户端向后端发送了类似“ 2019-02-24”的数据。

客户端必须获取该日期的所有数据

我该怎么办？..

首先感谢您阅读

来自外国开发商。**

Answer 1

通过在日期中添加时间部分，尝试在查询中使用server和$gte。因此，以下范围将代表日期：

$lte

如果您输入的日期是00:00:00:000 -- 23:59:59.999：

2019-02-24

此查询将返回所有db.collection.find({"DateField" : {$gte : ISODate("2019-02-24T00:00:00.000Z"), "$lte" : ISODate("2019-02-24T23:59:59.999Z")}})为DateField的文档。

编辑

为了实现所需的功能，可以运行2019-02-24：

aggregate

当db.collection.aggregate( [ {$unwind : "$data"}, // This will open up your array {$match : {"data.createdAt" : {$gte : ISODate("2019-02-24T00:00:00.000Z"), "$lte" : ISODate("2019-02-24T23:59:59.999Z")}}} // This will filter to get only the date you need ]);时，它将仅返回数组中的对象：

如何在mongodb中查询不同的日期结果？

1 个答案: