public function getClassContentThumbnailAction($filename)
    {
        $base_folder = $this->application->getContainer()->getParameter('classcontent_thumbnail.base_folder');
        $base_directories = array_map(function ($directory) use ($base_folder) {
            return str_replace(
                DIRECTORY_SEPARATOR.DIRECTORY_SEPARATOR,
                DIRECTORY_SEPARATOR,
                $directory.'/'.$base_folder
            );
        }, $this->application->getResourceDir());

        File::resolveFilepath($filename, null, array('include_path' => $base_directories));

        if (false === file_exists($filename)) {
            $filename = $this->getDefaultClassContentThumbnailFilepath($base_directories);
        }

        if (false === file_exists($filename) || false === is_readable($filename)) {
            $request = $this->application->getRequest();

            throw new FrontControllerException(sprintf(
                'The file `%s` can not be found (referer: %s).',
                $request->getHost().'/'.$request->getPathInfo(),
                $request->server->get('HTTP_REFERER')
            ), FrontControllerException::NOT_FOUND);
        }

        return $this->createResourceResponse($filename);
    }
public function getClassContentThumbnailAction($filename)
    {
        $base_folder = $this->application->getContainer()->getParameter('classcontent_thumbnail.base_folder');
        $base_directories = array_map(function ($directory) use ($base_folder) {
            return str_replace(
                DIRECTORY_SEPARATOR.DIRECTORY_SEPARATOR,
                DIRECTORY_SEPARATOR,
                $directory.'/'.$base_folder
            );
        }, $this->application->getResourceDir());

        File::resolveFilepath($filename, null, array('include_path' => $base_directories));

        if (false === file_exists($filename)) {
            $filename = $this->getDefaultClassContentThumbnailFilepath($base_directories);
        }

        if (false === file_exists($filename) || false === is_readable($filename)) {
            $request = $this->application->getRequest();

            throw new FrontControllerException(sprintf(
                'The file `%s` can not be found (referer: %s).',
                $request->getHost().'/'.$request->getPathInfo(),
                $request->server->get('HTTP_REFERER')
            ), FrontControllerException::NOT_FOUND);
        }

        return $this->createResourceResponse($filename);
    }
public function getClassContentThumbnailAction ( $ filename ) { $ base_folder = $ this -> application -> getContainer ( ) -> getParameter ( 'classcontent_thumbnail.base_folder' ) ; $ base_directories = array_map ( function ( $ directory ) use ( $ base_folder ) { return str_replace ( DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR , DIRECTORY_SEPARATOR , $ directory . '/' . $ base_folder ) ; } , $ this -> application -> getResourceDir ( ) ) ; File :: resolveFilepath ( $ filename , null , array ( 'include_path' => $ base_directories ) ) ; if ( false === file_exists ( $ filename ) ) { $ filename = $ this -> getDefaultClassContentThumbnailFilepath ( $ base_directories ) ; } if ( false === file_exists ( $ filename ) || false === is_readable ( $ filename ) ) { $ request = $ this -> application -> getRequest ( ) ; throw new FrontControllerException ( sprintf ( 'The file `%s` can not be found (referer: %s).' , $ request -> getHost ( ) . '/' . $ request -> getPathInfo ( ) , $ request -> server -> get ( 'HTTP_REFERER' ) ) , FrontControllerException :: NOT_FOUND ) ; } return $ this -> createResourceResponse ( $ filename ) ; }
Hdandles classcontent thumbnail request, returns the right thumbnail if it exists, else the default one.

@param string $filename

@return Response
Hdandles classcontent thumbnail request returns the right thumbnail if it exists else the default one .