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<?php |
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declare(strict_types=1); |
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namespace Jnjxp\Molniya; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use Zend\Expressive\Flash; |
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use Zend\Expressive\Template\TemplateRendererInterface; |
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class MessageMiddleware implements MiddlewareInterface |
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{ |
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public const VIEW_KEY = 'messages'; |
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protected $template; |
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protected $factory; |
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protected $flashKey; |
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protected $viewKey; |
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public function __construct( |
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TemplateRendererInterface $template, |
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string $helper = MessageViewHelper::class, |
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string $flashKey = Flash\FlashMessageMiddleware::FLASH_ATTRIBUTE, |
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string $viewKey = self::VIEW_KEY |
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) { |
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if (! class_exists($helper) |
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|| ! in_array(MessageViewHelperInterface::class, class_implements($helper), true) |
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) { |
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throw new \Exception($helper); |
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} |
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$this->factory = [$helper, 'createFromFlash']; |
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$this->template = $template; |
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$this->flashKey = $flashKey; |
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$this->viewKey = $viewKey; |
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} |
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public function process( |
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ServerRequestInterface $request, |
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RequestHandlerInterface $handler |
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) : ResponseInterface { |
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$flash = $request->getAttribute($this->flashKey, false); |
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if (! $flash instanceof Flash\FlashMessagesInterface) { |
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throw new \Exception('Flash not available'); |
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} |
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$helper = ($this->factory)($flash); |
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$this->addToView($helper); |
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return $handler->handle($request); |
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} |
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protected function addToView(MessageViewHelperInterface $helper) : void |
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{ |
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$this->template->addDefaultParam( |
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TemplateRendererInterface::TEMPLATE_ALL, |
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$this->viewKey, |
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$helper |
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); |
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} |
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} |
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jnjxp /
jnjxp.molniya
