1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// import async to make control flow simplier
var async = require('async');
// import the rest of the normal stuff
var mongoose = require('../../lib');
require('./geoJSONSchema.js')();
var Location = mongoose.model('Location');
// define some dummy data
// note: the type can be Point, LineString, or Polygon
var data = [
{loc: {type: 'Point', coordinates: [-20.0, 5.0]}},
{loc: {type: 'Point', coordinates: [6.0, 10.0]}},
{loc: {type: 'Point', coordinates: [34.0, -50.0]}},
{loc: {type: 'Point', coordinates: [-100.0, 70.0]}},
{loc: {type: 'Point', coordinates: [38.0, 38.0]}}
];
mongoose.connect('mongodb://localhost/locations', function(err) {
if (err) {
throw err;
}
Location.on('index', function(err) {
if (err) {
throw err;
}
// create all of the dummy locations
async.each(data, function(item, cb) {
Location.create(item, cb);
}, function(err) {
if (err) {
throw err;
}
// create the location we want to search for
var coords = {type: 'Point', coordinates: [-5, 5]};
// search for it
Location.find({loc: {$near: coords}}).limit(1).exec(function(err, res) {
if (err) {
throw err;
}
console.log('Closest to %s is %s', JSON.stringify(coords), res);
cleanup();
});
});
});
});
function cleanup() {
Location.remove(function() {
mongoose.disconnect();
});
}
|
