Symfony笔记之--自定义异常提示

Custom Exception

• ExceptionController

    namespace KitBaseBundle\Controller;
    
    use Symfony\Bundle\TwigBundle\Controller\ExceptionController as BaseController;
    use Symfony\Component\HttpFoundation\Request;
    use KitAdminBundle\Service\ThemeService;
    
    class ExceptionController extends BaseController
    {
        private $theme;
        
        public function __construct(\Twig_Environment $twig, $debug,ThemeService $theme)
        {
            parent::__construct($twig, $debug);
            $this->theme = $theme;
        }
        /**
         * @param Request $request
         * @param string  $format
         * @param int     $code          An HTTP response status code
         * @param bool    $showException
         *
         * @return string
         */
        protected function findTemplate(Request $request, $format, $code, $showException)
        {
            $themeName = $this->theme->get();
            $name = $showException ? 'exception' : 'error';
            if ($showException && 'html' == $format) {
                $name = 'exception_full';
            }
            
            // For themes error pages
            if (!$showException) {
                $template = sprintf('@KitWeb/theme/'.$themeName.'/Exception/%s%s.%s.twig', $name, $code, $format);
                if ($this->templateExists($template)) {
                    return $template;
                }
            }
            // try to find a template for the given format
            $template = sprintf('@KitWeb/theme/'.$themeName.'/Exception/%s.%s.twig', $name, $format);
            if ($this->templateExists($template)) {
                return $template;
            }
            return parent::findTemplate($request, $format, $code, $showException);
        }
    }

• ThemeService.php

<?php
namespace KitAdminBundle\Service;

class ThemeService
{
    /**
     *
     * @var \Doctrine\Bundle\DoctrineBundle\Registry
     */
    private $doctrine;
    
    public function __construct($doctrine)
    {
        $this->doctrine = $doctrine;
    }
    
    public function get($default = 'Default')
    {
        /**
         *
         * @var \KitAdminBundle\Repository\ThemeRepository $repo
         */
        $repo = $this->doctrine->getRepository('KitAdminBundle:Theme');
        $theme = $repo->findOneBy([
            'status' => 1
        ]);
        
        return (!empty($theme) && !empty($theme->getPath())) ? $theme->getPath() : $default;
    }
    
}  

• config.yml

  # Twig Configuration
  twig:
      ....
      exception_controller:  twig.controller.exception:showAction

• service.yml

  kit_admin.theme_service:
      class: KitAdminBundle\Service\ThemeService
      arguments: ["@doctrine"]
  twig.controller.exception:
      class: KitBaseBundle\Controller\ExceptionController
      arguments: ['@twig','%kernel.debug%', '@kit_admin.theme_service']

• views

  # KitWebBundle/Resources/views/theme/Luxe/Exception/error.html.twig
  <h2>{{ theme_name }} self excption error</h2>