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<?php |
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namespace Germania\PsrWebsites; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\NullLogger; |
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use Psr\Http\Message\ServerRequestInterface as Request; |
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use Psr\Http\Message\ResponseInterface as Response; |
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use Interop\Container\ContainerInterface; |
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use Slim\Http\Body as ResponseBody; |
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class WebsiteMiddleware |
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{ |
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/** |
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* @var ContainerInterface |
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*/ |
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public $websites; |
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/** |
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* @var Callable |
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*/ |
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public $render; |
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/** |
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* @var string |
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*/ |
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public $template; |
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/** |
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* @var array |
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*/ |
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public $defaults = array(); |
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/** |
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* @var LoggerInterface |
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*/ |
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public $logger; |
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/** |
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* @param ContainerInterface $websites A ContainerInterface instance that returns a website for the current route name |
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* @param Callable $render Rendering callable that receives template file and variables context |
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* @param string $template Template file |
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* @param array $defaults Default variables context |
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* @param LoggerInterface $logger Optional: PSR-3 Logger |
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*/ |
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public function __construct( ContainerInterface $websites, Callable $render, $template, array $defaults, LoggerInterface $logger = null) |
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{ |
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$this->websites = $websites; |
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$this->render = $render; |
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$this->template = $template; |
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$this->defaults = $defaults; |
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$this->logger = $logger ?: new NullLogger; |
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} |
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/** |
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* @param Psr\Http\Message\ServerRequestInterface $request PSR7 request |
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* @param Psr\Http\Message\ResponseInterface $response PSR7 response |
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* @param callable $next Next middleware |
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* |
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* @return Psr\Http\Message\ResponseInterface |
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*/ |
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public function __invoke(Request $request, Response $response, $next) |
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{ |
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// --------------------------------------- |
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// 1. Get current Website object, |
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// add as attribute to Request. |
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// The website will be available within route controllers. |
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// --------------------------------------- |
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$website_factory = $this->websites; |
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$current_route_name = $request->getAttribute('route')->getName(); |
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$website = $website_factory->get( $current_route_name ); |
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$request = $request->withAttribute('website', $website); |
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// --------------------------------------- |
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// 2. Call next middleware. |
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// Page content (not HTML head and stuff!) |
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// should be created there... |
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// --------------------------------------- |
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$content_response = $next($request, $response); |
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// --------------------------------------- |
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// 3. Create template variables |
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// --------------------------------------- |
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$vars = array_merge( |
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$this->defaults, [ |
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'title' => $website->getTitle(), |
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'id' => $website->getDomId(), |
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'base_url' => $request->getUri()->getBaseUrl(), |
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'content' => (string) $content_response->getBody() |
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] |
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); |
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$vars['javascripts'] = isset($vars['javascripts']) |
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? array_merge($vars['javascripts'], $website->getJavascripts() ?: array()) |
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: ($website->getJavascripts() ?: array()); |
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$vars['stylesheets'] = isset($vars['stylesheets']) |
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? array_merge($vars['stylesheets'], $website->getStylesheets() ?: array()) |
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: ($website->getStylesheets() ?: array()); |
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// --------------------------------------- |
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// 5. After that, render 'full page' template |
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// --------------------------------------- |
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// Output global website template |
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$this->logger->debug("Render page template…"); |
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$render = $this->render; |
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$full_page_html = $render( $this->template, $vars); |
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$this->logger->debug("Finish page template render; write response"); |
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// --------------------------------------- |
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// 6. Write response |
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// --------------------------------------- |
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$full_html_response_body = new ResponseBody(fopen('php://temp', 'r+')); |
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$full_html_response_body->write($full_page_html); |
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return $response->withHeader('Content-Type', 'text/html') |
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->withBody($full_html_response_body); |
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} |
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} |
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GermaniaKG /
PsrWebsites
