Question

我知道我需要输入以下内容 { petrol: '$getdata.2020-07-30.91' }

其中addFields

问题在于日期部分根据当前日期而更改。

所以我有以下数据

{"_id":"5f216290b57c1e693fe1cc20","location":{"coordinates":[115.820539,-31.822072],"type":"Point"},"store":"Caltex Woolworths Greenwood","typeOfData":"fuelwatch","__v":0,"getdata":{"2020-07-30":[{"91":"1.02"},{"95":"1.15"},{"LPG":"0.90"},{"98":"1.22"}]}}

现在我需要做的是在获取时希望它可读。

const mFuel = require('mongoose').model('fuelwatch');
               
               mFuel.aggregate(
                [
                    { "$geoNear": {
                        "near": {
                          "type": "Point",
                          "coordinates": [parseFloat(long), parseFloat(lat)]
                        },
                        "spherical": true,
                        "distanceField": "distance",
                        "distanceMultiplier": 0.000621371,
                        "maxDistance": 7 * 1609.34,
                        "includeLocs": "location"
                      }}
                  ]
            ).exec(function (err, addocs) {
                if(err){console.log(err)}

                res.send(addocs);
            });

上面的代码工作正常。

但是现在我需要移动日期{"2020-07-30":[{"91":"1.02"},{"95":"1.15"},{"LPG":"0.90"},{"98":"1.22"}]}下的零件，以使它们看起来像这样

{"91":'1.02',"95":'1.15',"LPG":'0.90',"98":'1.22'}

，所以当我运行addocs["91"]时，它将输出1.02。

我以前从未用过$addFields这种方式

我尝试过

{ "$addFields": {
                    "petrol": {
                      "$filter": {
                        "input": [setKey],
                        "cond": {
                          "$eq": ["$getdata", "$$this.91"]
                        }
                      }
                    }
                  }}

但这没用。

完整代码：

 var lat = req.params.lat;
    var long = req.params.long;
    var stationText;
    var date = new Date();
    const dateTimeFormat = new Intl.DateTimeFormat('en', { year: 'numeric', month: '2-digit', day: '2-digit' }) 
    const [{ value: month },,{ value: day },,{ value: year }] = dateTimeFormat .formatToParts(date ) 
    date = `${year}-${month}-${day }`
  //  console.log(`${day}-${month}-${year }`)
    let setKey = `getdata.${date}`;

    var fuelquery = {location:{$near: {$geometry: {type: "Point" ,coordinates:  [ parseFloat(long),  parseFloat(lat)]},$maxDistance: 5000,$minDistance: 0}}}
    console.log(JSON.stringify(fuelquery));   
    //advertquery = { location:{ $geoWithin:{ $centerSphere: [ [ parseFloat(docs.location.coordinates[0]), parseFloat(docs.location.coordinates[1])], 10 / 6378.1] } } };
               const mFuel = require('mongoose').model('fuelwatch');
               
               mFuel.aggregate(
                [
                    { "$geoNear": {
                        "near": {
                          "type": "Point",
                          "coordinates": [parseFloat(long), parseFloat(lat)]
                        },
                        "spherical": true,
                        "distanceField": "distance",
                        "distanceMultiplier": 0.000621371,
                        "maxDistance": 7 * 1609.34,
                        "includeLocs": "location"
                      }},
                   { "$addFields": {
                    "petrol": {
                      "$filter": {
                        "input": [setKey],
                        "cond": {
                          "$eq": ["$getdata", "$$this.91"]
                        }
                      }
                    }
                  }}
                  ]
            ).exec(function (err, addocs) {
                if(err){console.log(err)}

                res.send(addocs);
            });

MongooseDB $ addField用于子数组到主数组

0 个答案: