Ndtyjky

I am sorry by the title. I was hard to describe. I have this collection

  {

      "_id" : ObjectId("55cb9c666c522cafdb053a68"),

      location: {

     type: "Point",

     coordinates: [-73.856077, 40.848447]

  },

      "maxDistancevalue" : 100000

  }

Now I want to find of the current location is within: 100000 as defined is the collection by "maxDistancevalue"

The code will be like this. But how set the maxDistancevalue?

  db.places.find(

     {

       location:

         { $near :

            {

              $geometry: { type: "Point",  coordinates: [ -73.9667, 40.78 ] },

              $minDistance: **??????, -->maxDistancevalue** 

              $maxDistance: 0

            }

         }

     }

  ) 

You can use Aggregation Framework's $geoNear pipeline stage to reference other existing field. It requires 2dsphere index to be created on your collection, so start with:

db.places.createIndex({location:"2dsphere"});

and then you can run your aggregate() query:

db.places.aggregate([

    {

        $geoNear: {

            near: { type: "Point", coordinates: [ -73.9667, 40.78 ] },

            distanceField: "dist.calculated",

            maxDistance: "$maxDistancevalue"

        }

    }

])