beforeFilter

ApiController.php

<?php

class ApiController extends AppController {

    const ERR_ERROR = 200;
    const ERR_BUNDLE_ERROR = 201;
    const ERR_FORM_VALIDATION_ERROR = 301;
    const ERR_DUPLICATE = 100;
    const ERR_EMPTY_DATA = 400;


function beforeFilter() {
        parent::beforeFilter();

        $this->response->header(array(
                'Access-Control-Allow-Origin' => '*',
                'Access-Control-Allow-Headers' => 'Content-Type'
            )
        );
        $this->autoRender = false;
        $this->FormValidatorApi->useModel = 'Data';

        if ($_SERVER['REQUEST_METHOD'] == 'POST' && empty($_POST)){
            $_POST = array('Data'=>(array) json_decode(trim(file_get_contents('php://input')), true));
        }

        if (!empty($_POST)){
            if(array_key_exists('postdata', $_POST) && $_POST['postdata']){
                $_POST = json_decode(trim($_POST['postdata']), true);
            }
            $this->request->data = array('Data' => $_POST);
        }

        if (!empty($_POST) && !$this->request->data) {
            $this->request->data = $_POST;
        }

        if ($this->request->data && !isset($this->request->data['Data'])) {
            $this->request->data = array('Data' => $this->request->data);
        }
}


    function _throwError($error) {
        $this->_setResponse(compact('error'));
    }

    function _setErrorResponse($errors, $errorCode, $result = array()) {
        $result = array_merge($result, array(
                'success' => false,
                'message' => "{$errors}",
                'error_code' => $errorCode
            )
        );
        $this->_setResponse($result);
    }

    function _setResponse($result = array()) {
        if (is_array($result) && !array_key_exists('success', $result)) {
            $result['success'] = true;
            if (!array_key_exists('message', $result)) {
                $result['message'] = "Successful";
            }
        }

        if (!headers_sent()) {
            header('Content-Type: application/json');
        }

        $result['action'] = $this->action;
        echo json_encode($result, JSON_PRETTY_PRINT);
        exit;
    }
	
	
    function index() {
        $error = 'There is nothing here';
        $this->_throwError($error);
    }

}