MongoDB $geoWithin $centerSphere query - node.js

Question

I wrote the following schema in my Node.js server:
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var config = require('../../config.js');
var schema = new Schema({
title : { type: String, default: "generic"},
guide : String,
loc : {
type : {type: String, default:"Point"},
coordinates : [ ]
},
}
);
schema.index({"loc":"2dsphere"});
module.exports = mongoose.model(config.DATA_TYPE.SUPPORT, schema);
Then I wrote my dispatcher for adding, removing and research.
Adding and removing are ok but I have some problem with research.
This is my route:
router.route('/')
.post(function(req, res, next){
SupportManager.getGuides(req.body.lat, req.body.lon, function(err,data){
if(err){
return res.json({
success: false,
message: 756
});
}else{
return res.json({
success: true,
message: 856,
supports: data
});
}
});
})
where my SupportManager.getGuides is the following code:
getGuides: function(lat,lon,callback){
Support.find({ loc: { $geoWithin: { $centerSphere: [[ lon , lat], 10/3963.2]}}}, callback);
},
The strange behaviour is that I added the following object in my db:
{
"_id": "58bf2f07d5fd2a0cdde4cca9",
"guide": "a1",
"loc": {
"coordinates": [
"34",
"22"
],
"type": "Point"
},
"title": "tappp",
"__v": 0
}
But when I do the research, using lat=22 and long=34, I receive the answer with
success: true,
message: 856,
supports: []
The array "supports" is empty.

Answer 1

The code is perfect! Just the coordinates value are not saved as Number.
So the Schema should become:
var schema = new Schema({
title : { type: String, default: "generic"},
guide : String,
loc : {
type : {type: String, default:"Point"},
coordinates : [ { Number } ]
},
}
);
And the coordinates data in DB will be now
"loc": {
"coordinates": [
34,
22
],
"type": "Point"
},
while before the values were between the " " :
"loc": {
"coordinates": [
"34",
"22"
],
"type": "Point"
},