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<?php |
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namespace HtImgModule\View\Helper; |
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use Zend\View\Helper\AbstractHelper; |
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use HtImgModule\Service\CacheManagerInterface; |
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use HtImgModule\Imagine\Filter\FilterManagerInterface; |
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use HtImgModule\Imagine\Loader\LoaderManagerInterface; |
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class ImgUrl extends AbstractHelper |
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{ |
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/** |
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* @var CacheManagerInterface |
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*/ |
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protected $cacheManager; |
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/** |
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* @var FilterManagerInterface |
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*/ |
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protected $filterManager; |
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/** |
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* @var LoaderManagerInterface |
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*/ |
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protected $loaderManager; |
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/** |
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* Constructor |
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* |
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* @param CacheManagerInterface $cacheManager |
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* @param FilterManagerInterface $filterManager |
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* @param LoaderManagerInterface $loaderManager |
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*/ |
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public function __construct( |
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CacheManagerInterface $cacheManager, |
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FilterManagerInterface $filterManager, |
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LoaderManagerInterface $loaderManager |
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) |
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{ |
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$this->cacheManager = $cacheManager; |
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$this->filterManager = $filterManager; |
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$this->loaderManager = $loaderManager; |
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} |
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/** |
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* Gets url of image |
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* |
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* @param string $relativeName Relative Path |
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* @param string $filter Filter Service |
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* @return string |
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*/ |
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public function __invoke($relativeName, $filter) |
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{ |
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$filterOptions = $this->filterManager->getFilterOptions($filter); |
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if (isset($filterOptions['format'])) { |
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$format = $filterOptions['format']; |
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} else { |
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$binary = $this->loaderManager->loadBinary($relativeName, $filter); |
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$format = $binary->getFormat() ?: 'png'; |
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} |
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if ($this->cacheManager->isCachingEnabled($filter, $filterOptions) && $this->cacheManager->cacheExists($relativeName, $filter, $format)) { |
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$basePathHelper = $this->getView()->plugin('basePath'); |
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return $basePathHelper() . '/'. $this->cacheManager->getCacheUrl($relativeName, $filter, $format); |
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} |
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$urlHelper = $this->getView()->plugin('url'); |
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return $urlHelper('htimg/display', ['filter' => $filter], ['query' => ['relativePath' => $relativeName]]); |
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} |
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} |
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Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: