如何使用 mongoose 在 mongodb 中的两天之间从 mongodb 获取数据

Question

试图在两天之间从 mongodb 获取记录，但在我的代码中只有两天之间。

例子：

01-06-2020 到 08-06-2020 = 获取 02-06-2020 到 08-06-2020 的记录（01-06-2020 缺失）

但我想要 01-06-2020 到 08-06-2020 = 需要从 01-06-2020 到 08-06-2020 获取记录。

如何得到它？

Mongodb 数据：

{ 
_id:ObjectId("5edd1df67b272e2d4cf36f70"),
pname:"Test 1", 
category:"Choco 1",
todaydate:2020-06-01T18:30:00.000+00:00
},
{ 
_id:ObjectId("5gdd1df67b272e2d4cf36f72"),
pname:"Test 2", 
category:"Choco 3",
todaydate: 2020-06-02T18:30:00.000+00:00
},
{ 
_id:ObjectId("5kdd1df67b272e2d4cf36f74"),
pname:"Test 5", 
category:"Choco 6",
todaydate: 2020-05-01T18:30:00.000+00:00
},
{ 
_id:ObjectId("5ewd1df67b272e2d4cf36f75"),
pname:"Test 6", 
category:"Choco 8",
todaydate: 2020-06-03T18:30:00.000+00:00
},
{ 
_id:ObjectId("5sdd1df67b272e2d4cf36f76"),
pname:"Test 3", 
category:"Choco 9",
todaydate: 2020-06-04T18:30:00.000+00:00
},
{ 
_id:ObjectId("5tdd1df67b272e2d4cf36f78"),
pname:"Test 11", 
category:"Choco 10",
todaydate: 2020-06-05T18:30:00.000+00:00
}

数据.model.js：

const mongoose = require('mongoose'); 
var userSchemaDate = new mongoose.Schema({ 
    pname: {
        type: String
    },  
    category: {
        type: String
    },  
    todaydate: {
        type: Date
    }   
}, {
    versionKey: false,
    collection: 'data'
}); 

module.exports = mongoose.model('Data', userSchemaDate);

数据.controller.js：

module.exports.getReportTableData = (req, res, next) => {
    var collection = req.query.collection; 
    let tableReportdata = dbc.model(collection);

    let date1 = "01-06-2020"; dd/mm/yyyy
    let date2 = "07-06-2020"; dd/mm/yyyy

    tableReportdata.find({
            $and: [{
                    todaydate: {
                        $gt: date1
                    }
                },
                {
                    todaydate: {
                        $lt: date2
                    }
                }
            ]
        }, function(err, docs) {
            if (err) {
                console.log(err);
                return;
            } else {
                console.log("Successful loaded report data"); 
                res.json({ data: docs, msg: 'Report data loaded.' });
            }
        });
   }

Answer 1

您其他问题的答案应该返回正确的结果。 我还要强调，最好将日期存储为日期 object。

让我们尝试另一种方法，在输入值上也使用$dateFromString 。

tableReportdata.find({
  $expr: {
    $and: [
      {
        $gte: [
          {
            $dateFromString: {
              dateString: "$todaydate",
              format: "%d-%m-%Y",
              timezone: "UTC"
            }
          },
          {
            $dateFromString: {
              dateString: "01-06-2020",
              format: "%d-%m-%Y",
              timezone: "UTC"
            }
          }
        ]
      },
      {
        $lte: [
          {
            $dateFromString: {
              dateString: "$todaydate",
              format: "%d-%m-%Y",
              timezone: "UTC"
            }
          },
          {
            $dateFromString: {
              dateString: "07-06-2020",
              format: "%d-%m-%Y",
              timezone: "UTC"
            }
          }
        ]
      }
    ]
  }
}, function(err, docs) {
  if (err) {
    console.log(err);
    return;
  } else {
    console.log("Successful loaded report data"); 
    res.json({ data: docs, msg: 'Report data loaded.' });
  }
});

带助手的较短版本 function

const dateUTCexpr = (dateString) => ({
  $dateFromString: {
    dateString,
    format: "%d-%m-%Y",
    timezone: "UTC"
  }
})

tableReportdata.find({
  $expr: {
    $and: [
      {
        $gte: [dateUTCexpr("$todaydate"), dateUTCexpr("01-06-2020")]
      },
      {
        $lte: [dateUTCexpr("$todaydate"), dateUTCexpr("07-06-2020")]
      }
    ]
  }
}, function(err, docs) {
  if (err) {
    console.log(err);
    return;
  } else {
    console.log("Successful loaded report data"); 
    res.json({ data: docs, msg: 'Report data loaded.' });
  }
});

如果您在架构todaydate定义为String ，还要确保它在您的数据库中正确转换，您可以使用以下代码

const dateUTCexpr = (dateString) => ({
  $dateFromString: {
    dateString,
    format: "%d-%m-%Y",
    timezone: "UTC"
  }
})

tableReportdata.find({
  todaydate: {
    $gte: dateUTCexpr("01-06-2020"),
    $lte: dateUTCexpr("07-06-2020")
  }
}, function(err, docs) {
  if (err) {
    console.log(err);
    return;
  } else {
    console.log("Successful loaded report data"); 
    res.json({ data: docs, msg: 'Report data loaded.' });
  }
});