App\Http\Controllers\AccountApiController::addDeviceToken PHP Method

    public function addDeviceToken(Request $request)
    {
        $account = Auth::user()->account;
        //scan if this user has a token already registered (tokens can change, so we need to use the users email as key)
        $devices = json_decode($account->devices, TRUE);
        for ($x = 0; $x < count($devices); $x++) {
            if ($devices[$x]['email'] == Auth::user()->username) {
                $devices[$x]['token'] = $request->token;
                //update
                $account->devices = json_encode($devices);
                $account->save();
                $devices[$x]['account_key'] = $account->account_key;
                return $this->response($devices[$x]);
            }
        }
        //User does not have a device, create new record
        $newDevice = ['token' => $request->token, 'email' => $request->email, 'device' => $request->device, 'account_key' => $account->account_key, 'notify_sent' => TRUE, 'notify_viewed' => TRUE, 'notify_approved' => TRUE, 'notify_paid' => TRUE];
        $devices[] = $newDevice;
        $account->devices = json_encode($devices);
        $account->save();
        return $this->response($newDevice);
    }