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<?php |
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namespace Yiisoft\View; |
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/** |
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* DynamicContentAwareTrait implements common methods for classes |
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* which support a [[View]] dynamic content feature. |
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*/ |
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trait DynamicContentAwareTrait |
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{ |
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/** |
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* @var string[] a list of placeholders for dynamic content |
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*/ |
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private $dynamicPlaceholders; |
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/** |
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* Returns the view object that can be used to render views or view files using dynamic contents. |
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* |
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* @return View the view object that can be used to render views or view files. |
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*/ |
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abstract protected function getView(): View; |
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public function getDynamicPlaceholders(): array |
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{ |
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return $this->dynamicPlaceholders; |
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} |
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public function setDynamicPlaceholders(array $placeholders): void |
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{ |
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$this->dynamicPlaceholders = $placeholders; |
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} |
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public function addDynamicPlaceholder(string $name, string $statements): void |
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{ |
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$this->dynamicPlaceholders[$name] = $statements; |
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} |
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/** |
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* Replaces placeholders in $content with results of evaluated dynamic statements. |
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* |
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* @param string $content content to be parsed. |
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* @param string[] $placeholders placeholders and their values. |
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* @param bool $isRestoredFromCache whether content is going to be restored from cache. |
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* |
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* @return string final content. |
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*/ |
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protected function updateDynamicContent(string $content, array $placeholders, bool $isRestoredFromCache = false): string |
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{ |
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if ($placeholders === []) { |
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return $content; |
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} |
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if (count($this->getView()->getDynamicContents()) === 0) { |
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// outermost cache: replace placeholder with dynamic content |
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foreach ($placeholders as $name => $statements) { |
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$placeholders[$name] = $this->getView()->evaluateDynamicContent($statements); |
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} |
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$content = strtr($content, $placeholders); |
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} |
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if ($isRestoredFromCache) { |
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$view = $this->getView(); |
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foreach ($placeholders as $name => $statements) { |
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$view->addDynamicPlaceholder($name, $statements); |
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} |
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} |
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return $content; |
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} |
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} |
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yiisoft /
view
