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<?php |
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namespace Vssl\Render; |
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use League\Plates\Engine; |
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class Renderer |
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{ |
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/** |
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* Renderer configuration. |
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* |
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* @var array |
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*/ |
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protected $config; |
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/** |
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* Page data to render. |
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* |
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* @var array |
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*/ |
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protected $data; |
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/** |
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* Cache adapter. |
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* |
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* @var \Journey\Cache\CacheAdapterIterface |
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*/ |
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protected $cache; |
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/** |
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* String data to output. |
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* |
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* @var string |
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*/ |
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protected $output; |
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/** |
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* Template engine. |
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* |
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* @var \League\Plates\Engine |
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*/ |
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protected $engine; |
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/** |
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* Fields that are required in order to render. |
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* |
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* @var array |
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*/ |
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protected $required; |
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/** |
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* Name of the current theme. |
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* |
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* @var array |
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*/ |
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protected $theme; |
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/** |
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* Initialize our new renderer. |
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*/ |
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public function __construct(array $config, array $data) |
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{ |
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$this->config = $config; |
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$this->required = array_filter($config['required_fields']); |
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$this->setData($data); |
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$this->engine = new Engine(__DIR__ . "/../templates"); |
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$this->registerFunctions(); |
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if (isset($config['templates'])) { |
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$this->registerTheme('default', $config['templates']); |
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} |
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} |
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/** |
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* Register custom theme functions particular function. |
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* |
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* @return $this |
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*/ |
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public function registerFunctions() |
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{ |
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$this->engine->registerFunction('wrapperClasses', [$this, 'wrapperClasses']); |
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$this->engine->registerFunction('image', [$this, 'image']); |
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} |
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/** |
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* Add a single directory to the template engine. |
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* |
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* @param string $directories directory of templates |
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* @return $this |
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*/ |
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public function registerTheme($theme, $directory) |
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{ |
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if (!is_dir($directory)) { |
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throw new RendererException('The specified theme directory does not exist: ' . $directory); |
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} |
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$this->theme = $theme; |
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$this->engine->addFolder($theme, $directory, true); |
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return $this; |
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} |
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/** |
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* Returns the template rendering engine. |
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* |
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* @return League\Plates\Engine |
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*/ |
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public function getEngine() |
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{ |
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return $this->engine; |
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} |
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/** |
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* Get the page data that will be rendered. |
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* |
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* @return array |
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*/ |
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public function getData() |
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{ |
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return $this->data; |
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} |
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/** |
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* Replace the page data |
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* |
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* @param array $data |
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*/ |
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public function setData(array $data) |
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{ |
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$this->validateData($data); |
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$this->data = $data; |
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return $this; |
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} |
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/** |
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* Validate that the page data is complete enough to render. |
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* |
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* Note: Throws an exception if the page data is incomplete. |
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* |
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* @param array $data array |
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* @return boolean |
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*/ |
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public function validateData(array $data) |
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{ |
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if (!count(array_diff_key(array_flip($this->required), $data))) { |
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return true; |
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} |
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throw new RendererException('Invalid or incomplete page data'); |
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} |
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/** |
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* Generate wrapper classes for stripes |
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* |
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* @return string |
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*/ |
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public function wrapperClasses($string) |
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{ |
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$type = str_replace("stripe-", "", $string); |
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return 'vssl-stripe vssl-stripe--' . $type; |
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} |
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/** |
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* Returns the image url on the vssl server. |
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* |
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* @param string $imageName hash.extension |
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* @param string $style image style name |
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* @return string |
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*/ |
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public function image($name, $style = false) |
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{ |
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return ltrim($this->config['base_uri'], '/') . "/images" . ($style ? '/' . $style : '') . "/" . $name; |
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} |
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/** |
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* Process data before its output. This is the last chance to make changes |
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* to data before being passed to the actual template files. |
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* |
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* @return array |
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*/ |
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public function processData($data) |
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{ |
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$data['themePrefix'] = $this->theme ? $this->theme . "::" : ""; |
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if (isset($data['stripes'])) { |
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$data['stripes'] = array_filter($data['stripes'], function ($stripe) use ($data) { |
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return $this->engine->exists($data['themePrefix'] . 'stripes/' . $stripe['type']); |
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}); |
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} |
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return $data; |
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} |
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/** |
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* Render the current data. |
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* |
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* @return string |
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*/ |
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public function render() |
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{ |
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return $this->engine->render('page', $this->processData($this->data)); |
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} |
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/** |
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* Return the rendered page. |
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* |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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try { |
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return $this->render(); |
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} catch (\Exception $e) { |
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return "Error rendering page: " . $e->getMessage(); |
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} |
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} |
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} |
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This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italy
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was removed, but the annotation was not.