Can't canonicalize query :: caused by :: invalid argument in geo near query

Question

Hoping someone can help with this because I've been working on it all morning

I'm trying to use MongoDB Near to find locations within a radius of a given point on a map. I get the following error:

{"name":"MongoError","message":"Can't canonicalize query :: caused by :: invalid argument in geo near query: spherical","$err":"Can't canonicalize query :: caused by :: invalid argument in geo near query: spherical","code":2,"ok":0}

This is the mongoose schema for locations:

var mongoose = require('mongoose'),
  Schema = mongoose.Schema;

var LocationSchema = new Schema({
    title: String,
    coordinates: {
      type: [Number],
      index: '2dsphere'
    },
    created: {
        type: Date,
        default: Date.now
    }
});

mongoose.model('Location', LocationSchema);

and this is the route where I try to use "Near" - basically I enter a set of coordinates in a form where the target is the following

router.post('/nearme', function (req, res, next) {

// Setup limit
var limit = req.body.limit || 10;

// Default max distance to 10 kilometers
var maxDistance = req.body.distance || 10;

// Setup coords Object = [ <longitude> , <latitude> ]
var coords = [];
// Create the array
coords[0] = req.body.longitude;
coords[1] = req.body.latitude;

// find a location
Location.find({
    'coordinates': {
        $near: {
            $geometry: {
                type: "Point",
                coordinates: coords
            },
            // distance to radians
            $maxDistance: maxDistance * 1609.34, spherical: true
        }
    }
}).limit(limit).exec(function (err, stores) {
    if (err) {
        return res.status(500).json(err);
    }

    //res.status(200).json(stores);

    res.render('locations', {
        title: 'Locations',
        location: stores,
        lat: -23.54312,
        long: -46.642748
    });
});

Also - I indexed the location collection as follows:

db.locations.ensureIndex({ 'coordinates' : '2dsphere'})

and as far as I can tell, it looks right:

Things I've tried:

1. using "geoNear" instead of geometry.
2. removing spherical:true
3. searching stackoverflow for similar errors - none seem to have the same issue

Any help you could provide would be amazing. Thank you!

Answer 1

Thanks to Joe I reviewed the MongoDB docs and updated the /nearme route as follows (changes made in $near):

router.post('/nearme', function (req, res, next) {

// Setup limit
var limit = req.body.limit || 10;

// Default max distance to 10 kilometers
var maxDistance = req.body.distance || 10;

// Setup coords Object = [ <longitude> , <latitude> ]
var coords = [];
// Create the array
coords[0] = req.body.longitude;
coords[1] = req.body.latitude;

// find a location
Location.find({
    'coordinates': {
        $near: {
                $geometry: {
                  type: "Point" ,
                  coordinates: coords
                },
               $maxDistance: maxDistance * 1609.34,
               $minDistance: 0
                    }
                }
}).limit(limit).exec(function (err, stores) {
    if (err) {
        return res.status(500).json(err);
    }

    //res.status(200).json(stores);

    res.render('locations', {
        title: 'Locations',
        location: stores,
        lat: -23.54312,
        long: -46.642748
    });
});

});