CODEWITHSUNDEEP
node.jsmongodbmongoosegeospatialgeo
Ben
Ben

Reputation: 6086

Node,js - Mongoose - Unable to save Geo Polygon - CastError: Cast to number failed

I am trying to save a Geo Point and a Geo Polygon to Mongo. My tests pass for the Point, but fail for the polygon with:

CastError: Cast to number failed for value "0,0,3,0,3,3,0,3,0,0" at path "coordinates"

My schema is as follows:

var GeoSchema = new Schema({
    name: String
  , coordinates: [Number]
});
GeoSchema.index({ coordinates: '2dsphere' });

My test point object which successfully saves:

geoPoint = new Geo({
   coordinates: [2,2],
   type: 'Point'
});

My test polygon object which fails to save:

geoPolygon = new Geo({ 
  type: 'Polygon', 
  coordinates: [[ [0,0], [3,0], [3,3], [0,3], [0,0] ]]
});

I have tried changing the type def for "coordinates" to an object and an array, but then both fail to save.

Can anyone advise?

* UPDATE *

I can now get the tests passing using:

schema:

var GeoSchema = new Schema({
  coordinates : { type: [], index: '2dsphere' },
  type: String
});

Point object:

geoPoint = new Geo({
              geo: {
        type: 'Point',
        coordinates: [2,2]
        }
            });

Polygon:

    geoPolygon = new Geo({ 
geo: {
        type: 'Polygon',
    coordinates: [
        [ [100.0, 0.0], [101.0, 0.0],
           [101.0, 1.0], [100.0, 1.0],
           [100.0, 0.0] ]
        ]
    }
    });

However when I query the db directly I just see:

db.geos.find()
{ "_id" : ObjectId("52b73de00b4dfee427000005"), "__v" : 0 }
{ "_id" : ObjectId("52b73de00b4dfee427000006"), "__v" : 0 }

Can anyone advise why I do not see the saved records?

Upvotes: 2

Views: 1772

Answers (1)

damphat
damphat

Reputation: 18956

Edit: It seem that we can set 2dsphere on Point only, not Polygon

so I remove index and it worked.

file: app.js

var mongoose = require('mongoose');

mongoose.connect('localhost', 'geo-database');

var GeoSchema = mongoose.Schema({
    name: String
  , coordinates: []
});

//GeoSchema.index({ coordinates: '2dsphere' });

var Geo = mongoose.model('geos', GeoSchema);

Geo.on('index', function () {
    function cb() {
        console.log(arguments);
    }

    geoPoint = new Geo({
       coordinates: [2,2],
       type: 'Point'
    }).save(cb);

    geoPolygon = new Geo({ 
      type: 'Polygon', 
      coordinates: [[ [0,0], [3,0], [3,3], [0,3], [0,0] ]]
    }).save(cb);
})

terminal:

$mongo --version
MongoDB shell version: 2.5.5-pre-

npm install mongoose
node app

output:

{ '0': null,
  '1': { __v: 0, _id: 52b6e82493d21060b3000001, coordinates: [ 2, 2 ] },
  '2': 1 }
{ '0': null,
  '1':
   { __v: 0,
     _id: 52b6e82493d21060b3000002,
     coordinates: [ [ [Object], [Object], [Object], [Object], [Object] ] ] },
  '2': 1 }

Upvotes: 2

Related Questions