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<?php |
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namespace Spatie\Pjax\Middleware; |
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use Closure; |
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use Illuminate\Http\Request; |
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use Illuminate\Http\Response; |
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use Symfony\Component\DomCrawler\Crawler; |
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use Symfony\Component\HttpFoundation\Response as BaseResponse; |
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class FilterIfPjax |
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{ |
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/** @var \Symfony\Component\DomCrawler\Crawler */ |
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protected $crawler; |
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public function handle(Request $request, Closure $next): BaseResponse |
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{ |
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$response = $next($request); |
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if (! $request->pjax() || $response->isRedirection()) { |
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return $response; |
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} |
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$this->filterResponse($response, $request->header('X-PJAX-Container')) |
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->setUriHeader($response, $request) |
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->setVersionHeader($response, $request); |
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return $response; |
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} |
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protected function filterResponse(BaseResponse $response, $container): self |
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{ |
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$crawler = $this->getCrawler($response); |
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$response->setContent( |
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$this->makeTitle($crawler). |
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$this->fetchContainer($crawler, $container) |
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); |
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return $this; |
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} |
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protected function makeTitle(Crawler $crawler): ?string |
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{ |
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$pageTitle = $crawler->filter('head > title'); |
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if (! $pageTitle->count()) { |
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return null; |
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} |
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return "<title>{$pageTitle->html()}</title>"; |
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} |
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protected function fetchContainer(Crawler $crawler, $container): string |
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{ |
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$content = $crawler->filter($container); |
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if (! $content->count()) { |
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abort(422); |
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} |
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return $content->html(); |
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} |
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protected function setUriHeader(Response $response, Request $request): self |
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{ |
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$response->header('X-PJAX-URL', $request->getRequestUri()); |
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return $this; |
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} |
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protected function setVersionHeader(Response $response, Request $request): self |
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{ |
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$crawler = $this->getCrawler($this->createResponseWithLowerCaseContent($response)); |
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$node = $crawler->filter('head > meta[http-equiv="x-pjax-version"]'); |
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if ($node->count()) { |
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$response->header('x-pjax-version', $node->attr('content')); |
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} |
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return $this; |
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} |
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protected function getCrawler(BaseResponse $response): Crawler |
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{ |
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if ($this->crawler) { |
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return $this->crawler; |
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} |
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return $this->crawler = new Crawler($response->getContent()); |
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} |
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protected function createResponseWithLowerCaseContent(Response $response): Response |
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{ |
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$lowercaseContent = strtolower($response->getContent()); |
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return Response::create($lowercaseContent); |
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} |
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} |
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spatie /
laravel-pjax
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This check looks from parameters that have been defined for a function or method, but which are not used in the method body.