CakePHP push notifications are repeating? - cakephp

Question

I'm trying send push notifications with CakePHP. The notifications are send but the problem is that all notifications are repeating. I cant understand why this problem.
I have a table to add devices of GCM (Google Cloud Messaging). After save the Model I do a SELECT in this table to get all devide_id of GCM saved and send the push notifications. The field device_id is unique in table. After to select I do a foreach to get devices and send the notifications, but this always repeating and send a lot of push to the same device_id.
How could I solve it ?
Push Notification Class
<?php
class Pusher{
const GOOGLE_GCM_URL = 'https://android.googleapis.com/gcm/send';
private $apiKey;
private $proxy;
private $output;
public function __construct($apiKey, $proxy = null)
{
$this->apiKey = $apiKey;
$this->proxy = $proxy;
}
/**
* #param string|array $regIds
* #param string $data
* #throws \Exception
*/
public function notify($regIds, $data)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, self::GOOGLE_GCM_URL);
if (!is_null($this->proxy)) {
curl_setopt($ch, CURLOPT_PROXY, $this->proxy);
}
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $this->getHeaders());
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, $this->getPostFields($regIds, $data));
$result = curl_exec($ch);
if ($result === false) {
throw new \Exception(curl_error($ch));
}
curl_close($ch);
$this->output = $result;
}
/**
* #return array
*/
public function getOutputAsArray()
{
return json_decode($this->output, true);
}
/**
* #return object
*/
public function getOutputAsObject()
{
return json_decode($this->output);
}
private function getHeaders(){
return [
'Authorization: key=' . $this->apiKey,
'Content-Type: application/json'
];
}
private function getPostFields($regIds, $data){
$fields = [
'registration_ids' => is_string($regIds) ? [$regIds] : $regIds,
'data' => is_string($data) ? ['message' => $data] : $data,
];
return json_encode($fields, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP | JSON_UNESCAPED_UNICODE);
}
}
Controller
<?php
App::uses('AppController', 'Controller');
App::uses('Pusher', 'Plugin/Push');
class NoticiasController extends AppController {
public function add() {
if ($this->request->is('post')) {
$this->Noticia->create();
if($this->Noticia->save($this->request->data)){
$this->Session->setFlash(__("Save ok!"));
$this->sendPush();
return $this->redirect(array('action' => 'index'));
}else{
$this->Session->setFlash(__("Not save :("));
}
}
}
/***************** push notifications ****************/
private function sendPush(){
$apiKey = "AIzaSyCMZ6roIEpHsj5P8cgErgceerljerhaljh";
//msg de push
$message = array("title"=>"Title",
"message"=>"Post a news",
"tickerText"=>"Post a news",
"url"=>"News");
$this->loadModel('Device');
$devices = $this->Device->query("SELECT device_id, status FROM devices Device WHERE status = 1");
$pusher = new Pusher($apiKey);
foreach ($devices as $device){
$pusher->notify($device["Device"]["device_id"], $message);
}
}
}