mongodb geo query sample

Please make sure you typecast the lat-longs with float. Or else mongo extension will treat it as a string (surprise, surprise) and query will return assuming empty condition (this took forever me to find).

EDIT: Have a look at Cakephp mongo driver source for more ways to use geo queries.https://github.com/ichikaway/cakephp-mongodb/blob/master/samples/controllers/geos_controller.php

https://github.com/ichikaway/cakephp-mongodb/blob/cake2.2/samples/Controller/GeosController.php

	/**
	* GeoController class
	*
	* @uses AppController
	* @package mongodb
	* @subpackage mongodb.samples.controllers
	*/
	class GeosController extends AppController {
	/**
	* name property
	*
	* @var string 'Geo'
	* @access public
	*/
	public $name = 'Geos';
	/**
	* index method
	*
	* @return void
	* @access public
	*/
	public function index($type = null, $lat = null, $long = null, $opt1 = null, $opt2 = null) {
	$params = array(
	'limit' => 35,
	'page' => 1,
	);
	if(!empty($type) && !empty($lat) && !empty($long)) {
	$lat = floatval($lat);
	$long = floatval($long);
	$opt1 = floatval($opt1);
	$opt2 = floatval($opt2);
	switch($type) {
	case('near'):
	if(!empty($opt1)){
	$cond = array('loc' => array('$near' => array($lat, $long), '$maxDistance' => $opt1));
	} else {
	$cond = array('loc' => array('$near' => array($lat, $long)));
	}
	break;
	case('box'):
	$lowerLeft = array($lat, $long);
	$upperRight = array($opt1, $opt2);
	$cond = array('loc' => array('$within' => array('$box' => array($lowerLeft, $upperRight))));
	break;
	case('circle'):
	$center = array($lat, $long);
	$radius = $opt1;
	$cond = array('loc' => array('$within' => array('$center' => array($center, $radius))));
	break;
	}
	$params['conditions'] = $cond;
	} else {
	$params['order'] = array('_id' => -1);
	}
	$results = $this->Geo->find('all', $params);
	$this->set(compact('results'));
	}
	/**
	* add method
	*
	* @return void
	* @access public
	*/
	public function add() {
	if (!empty($this->data)) {
	$this->Geo->create();
	if ($this->Geo->save($this->data)) {
	$this->flash(__('Geo saved.', true), array('action' => 'index'));
	} else {
	}
	}
	}
	/**
	* delete method
	*
	* @param mixed $id null
	* @return void
	* @access public
	*/
	public function delete($id = null) {
	if (!$id) {
	$this->flash(__('Invalid Geo', true), array('action' => 'index'));
	}
	if ($this->Geo->delete($id)) {
	$this->flash(__('Geo deleted', true), array('action' => 'index'));
	} else {
	$this->flash(__('Geo deleted Fail', true), array('action' => 'index'));
	}
	}
	}