Error handling in CakePHP 2.0+

gistfile1.txt

Exception handling in cakephp 2.0+
Now, I discribe step by step how to handle error 400,403,404,405,501 in cakephp2.0+

Step-1 : Update /app/Config/core.php

open  /app/Config/core.php, and find the following:

Configure::write('Exception', array(
    'handler' => 'ErrorHandler::handleException',
    'renderer' => 'ExceptionRenderer',
    'log' => true
));


and Replace with following:

Configure::write('Exception', array(
    'handler' => 'ErrorHandler::handleException',
    'renderer' => 'AppExceptionRenderer',
    'log' => true
));


Step-2 : Create following file if not exists


1. /app/View/Errors/error400.ctp
2. /app/View/Errors/error403.ctp
3. /app/View/Errors/error404.ctp
4. /app/View/Errors/error405.ctp
5. /app/View/Errors/error500.ctp
6. /app/View/Errors/error501.ctp


in above file , you can put your custom error design.

Step-3 : Create /app/Lib/Error/AppExceptionRenderer.php


App::uses('ExceptionRenderer', 'Error');

class AppExceptionRenderer extends ExceptionRenderer {

    /*-------------------------------------------------------------------------*/
    /* -- Exceptions
    /*-------------------------------------------------------------------------*/

    public function notFound($error) {
        $this->controller->beforeFilter();
        $this->controller->set('title_for_layout', 'Not Found');
        $this->controller->render('/Errors/error404');
        $this->controller->response->send();
    }
    public function badRequest($error) {
        $this->controller->beforeFilter();
        $this->controller->set('title_for_layout', 'Not Found');
        $this->controller->render('/Errors/error400');
        $this->controller->response->send();
    }
    public function forbidden($error) {
        $this->controller->beforeFilter();
        $this->controller->set('title_for_layout', 'Not Found');
        $this->controller->render('/Errors/error403');
        $this->controller->response->send();
    }
    public function methodNotAllowed($error) {
        $this->controller->beforeFilter();
        $this->controller->set('title_for_layout', 'Not Found');
        $this->controller->render('/Errors/error405');
        $this->controller->response->send();
    }
    public function internalError($error) {
        $this->controller->beforeFilter();
        $this->controller->set('title_for_layout', 'Not Found');
        $this->controller->render('/Errors/error500');
        $this->controller->response->send();
    }
    public function notImplemented($error) {
        $this->controller->beforeFilter();
        $this->controller->set('title_for_layout', 'Not Found');
        $this->controller->render('/Errors/error501');
        $this->controller->response->send();
    }

    /*-------------------------------------------------------------------------*/
    /* -- Other
    /*-------------------------------------------------------------------------*/

    public function missingController($error) {
        $this->notFound($error);
    }
    public function missingAction($error) {
        $this->notFound($error);
    }
    public function missingView($error) {
        $this->notFound($error);
    }
    public function missingLayout($error) {
        $this->internalError($error);
    }
    public function missingHelper($error) {
        $this->internalError($error);
    }
    public function missingBehavior($error) {
        $this->internalError($error);
    }
    public function missingComponent($error) {
        $this->internalError($error);
    }
    public function missingTask($error) {
        $this->internalError($error);
    }
    public function missingShell($error) {
        $this->internalError($error);
    }
    public function missingShellMethod($error) {
        $this->internalError($error);
    }
    public function missingDatabase($error) {
        $this->internalError($error);
    }
    public function missingConnection($error) {
        $this->internalError($error);
    }
    public function missingTable($error) {
        $this->internalError($error);
    }
    public function privateAction($error) {
        $this->internalError($error);
    }
    
}


-- in above function,
   set method:
     We need to do is set our title_for_layout variable so it’s passed to the view
   render method :
     The first params is the view you want to render and 
     The second params is the layout to render it in (second is optional).