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Symfony-HttpFoundationで条件付きGET
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| <?php | |
| namespace Acme; | |
| /* | |
| * 【Symfony-HttpFoundationで条件付きGET】 | |
| * | |
| * @copyright 2012 k-holy <[email protected]> | |
| * @license The MIT License (MIT) | |
| */ | |
| $loader = include __DIR__ . '/../../../vendor/autoload.php'; | |
| use Silex\Application; | |
| use Symfony\Component\HttpFoundation\Request; | |
| use Symfony\Component\HttpFoundation\Response; | |
| use Symfony\Component\HttpFoundation\StreamedResponse; | |
| $app = new Application(); | |
| $app->register(new \Silex\Provider\UrlGeneratorServiceProvider()); | |
| // 以後、$app['url_generator'] で共有の Symfony\Component\Routing\Generator\UrlGenerator インスタンスを取得できる | |
| class UrlGeneratorForSmarty | |
| { | |
| private $generator; | |
| public function __construct(\Symfony\Component\Routing\Generator\UrlGenerator $generator) | |
| { | |
| $this->generator = $generator; | |
| } | |
| public function path($params, $smarty) | |
| { | |
| if (isset($params['route'])) { | |
| $route = $params['route']; | |
| unset($params['route']); | |
| return $this->generator->generate($route, $params, false); | |
| } | |
| } | |
| } | |
| //------------------------------------------------------------------------------ | |
| // 画像のキャッシュとダウンロード（テンプレート） | |
| $app->get('/', function(Application $app, Request $request) { | |
| $smarty = new \Smarty(); | |
| $smarty->template_dir = realpath(__DIR__ . '/templates'); | |
| $smarty->compile_dir = sys_get_temp_dir(); | |
| $smarty->force_compile = true; | |
| $smarty->escape_html = true; | |
| $urlGenerator = new UrlGeneratorForSmarty($app['url_generator']); | |
| $smarty->registerPlugin('function', 'build_path', array($urlGenerator, 'path')); | |
| $data = new \StdClass(); | |
| $data->source = highlight_file(__FILE__, true); | |
| $response = new Response(); | |
| $smarty->assign('this', $data); | |
| $content = $smarty->fetch(sprintf('string:%s', <<<'TEMPLATE' | |
| <!DOCTYPE html> | |
| <html lang="ja"> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <style type="text/css"> | |
| pre { font-family:monospace; font-size:large; } | |
| </style> | |
| <title>Silex + HttpFoundationで画像の条件付きGET</title> | |
| </head> | |
| <body> | |
| <h1>Silex + HttpFoundationで画像の条件付きGET</h1> | |
| <h2>キャッシュしない</h2> | |
| <p><img src="{build_path route="image" no-cache="1"}" /></p> | |
| <h2>更新日付でキャッシュ</h2> | |
| <p><img src="{build_path route="image" last-modified="1"}" /></p> | |
| <h2>Etagでキャッシュ</h2> | |
| <p><img src="{build_path route="image" etag="1"}" /></p> | |
| <h2>ダウンロード</h2> | |
| <p><a href="{build_path route="image" download="1"}" />ダウンロード</a></p> | |
| <h2>ソース</h2> | |
| <pre>{$this->source nofilter}</pre> | |
| </body> | |
| </html> | |
| TEMPLATE | |
| )); | |
| $response->headers->set('Content-Length', strlen($content)); | |
| $response->setContent($content); | |
| return $response; | |
| })->bind('enable-caching'); | |
| //------------------------------------------------------------------------------ | |
| // 画像のキャッシュとダウンロード（画像） | |
| $app->get('/image', function(Application $app, Request $request) { | |
| // 画像ファイル | |
| $file = new \SplFileInfo(__DIR__ . DIRECTORY_SEPARATOR . 'src' . DIRECTORY_SEPARATOR . 'sunset.jpg'); | |
| $no_cache = $request->get('no-cache', 0); | |
| $validate_last_modified = $request->get('last-modified', 0); | |
| $validate_etag = $request->get('etag', 0); | |
| $download = $request->get('download', 0); | |
| $response = new Response(); | |
| // キャッシュ禁止ではない場合、レスポンスに Last-Modified と Etag をセットし、リクエストと検証 | |
| if (!$no_cache) { | |
| if ($validate_last_modified) { | |
| $lastModified = new \DateTime(); | |
| $lastModified->setTimestamp($file->getMTime()); | |
| $response->setLastModified($lastModified); | |
| } | |
| if ($validate_etag) { | |
| $etag = sha1(serialize(array( | |
| 'file' => $file->getRealPath(), | |
| 'size' => $file->getSize(), | |
| 'mtime' => $file->getMTime(), | |
| ))); | |
| $response->setEtag($etag); | |
| } | |
| // Response::isNotModified() で検証に成功した場合はステータス 304 がセットされるので、そのまま返せばOK | |
| if ($response->isNotModified($request)) { | |
| return $response; | |
| } | |
| } | |
| // キャッシュしない場合は StreamedResponse で返す | |
| if ($no_cache) { | |
| $response = new StreamedResponse(); | |
| $response->setPrivate(); | |
| $response->setCallback(function() use ($file) { | |
| $file->openFile('r')->fpassthru(); | |
| }); | |
| } else { | |
| $response->setPublic(); | |
| $response->setContent(file_get_contents($file->getRealPath())); | |
| } | |
| // 画像ファイルの情報を元にレスポンスヘッダをセット | |
| $mimeType = new \Finfo(FILEINFO_MIME_TYPE); | |
| $response->headers->set('Content-Type', $mimeType->file($file->getRealPath())); | |
| $response->headers->set('Content-Disposition', | |
| $response->headers->makeDisposition( | |
| $download ? 'attachment' : 'inline', | |
| $file->getBasename() | |
| ) | |
| ); | |
| $response->headers->set('Content-Length', $file->getSize()); | |
| // IE8+用 | |
| if ($download) { | |
| $response->headers->set('X-Download-Options', 'noopen'); | |
| } | |
| $response->headers->set('X-Content-Type-Options', 'nosniff'); | |
| // Date, Expires | |
| $currentDate = new \DateTime(null, new \DateTimeZone('UTC')); | |
| $response->setDate($currentDate); | |
| if ($no_cache) { | |
| $response->setExpires($currentDate); | |
| } | |
| return $response; | |
| })->bind('image'); | |
| $app->run(); |
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