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<?php |
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namespace DNADesign\Elemental\Extensions; |
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use DNADesign\Elemental\Models\BaseElement; |
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use DNADesign\Elemental\Models\ElementalArea; |
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use SilverStripe\CMS\Model\SiteTree; |
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use SilverStripe\Control\Controller; |
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use SilverStripe\View\Parsers\HTML4Value; |
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use SilverStripe\View\SSViewer; |
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/** |
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* @method ElementalArea ElementalArea() |
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* @property int ElementalAreaID |
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*/ |
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class ElementalPageExtension extends ElementalAreasExtension |
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{ |
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private static $has_one = [ |
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'ElementalArea' => ElementalArea::class, |
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]; |
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private static $owns = [ |
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'ElementalArea', |
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]; |
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private static $cascade_duplicates = [ |
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'ElementalArea', |
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]; |
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/** |
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* The delimiter to separate distinct elements in indexed content. |
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* |
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* When using the getElementsForSearch() method to index all elements in a single field, |
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* a custom delimiter can be used help to avoid false positive results for phrase queries. |
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* |
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* @config |
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* @var string |
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*/ |
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private static $search_index_element_delimiter = ' '; |
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/** |
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* Returns the contents of each ElementalArea has_one's markup for use in Solr or Elastic search indexing |
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* |
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* @return string |
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*/ |
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public function getElementsForSearch() |
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{ |
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$oldThemes = SSViewer::get_themes(); |
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SSViewer::set_themes(SSViewer::config()->get('themes')); |
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try { |
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$output = []; |
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$this->loopThroughElements(function (BaseElement $element) use (&$output) { |
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if ($element->getSearchIndexable()) { |
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$content = $element->getContentForSearchIndex(); |
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if ($content) { |
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$output[] = $content; |
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} |
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} |
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}); |
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} finally { |
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// Reset theme if an exception occurs, if you don't have a |
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// try / finally around code that might throw an Exception, |
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// CMS layout can break on the response. (SilverStripe 4.1.1) |
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SSViewer::set_themes($oldThemes); |
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} |
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return implode($this->owner->config()->get('search_index_element_delimiter') ?? '', $output); |
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} |
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/** |
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* @see SiteTree::getAnchorsOnPage() |
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*/ |
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public function updateAnchorsOnPage(array &$anchors): void |
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{ |
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if (!($this->owner instanceof SiteTree)) { |
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return; |
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} |
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$this->loopThroughElements(function (BaseElement $element) use (&$anchors) { |
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$anchors = array_merge($anchors, $element->getAnchorsInContent()); |
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}); |
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} |
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public function MetaTags(&$tags) |
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{ |
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if (!Controller::has_curr()) { |
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return; |
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} |
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$controller = Controller::curr(); |
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$request = $controller->getRequest(); |
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if ($request->getVar('ElementalPreview') !== null) { |
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$html = HTML4Value::create($tags); |
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$xpath = "//meta[@name='x-page-id' or @name='x-cms-edit-link']"; |
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$removeTags = $html->query($xpath); |
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$body = $html->getBody(); |
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foreach ($removeTags as $tag) { |
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$body->removeChild($tag); |
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} |
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$tags = $html->getContent(); |
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} |
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} |
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/** |
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* Call some function over all elements belonging to this page |
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*/ |
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private function loopThroughElements(callable $callback): void |
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{ |
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foreach ($this->owner->hasOne() as $key => $class) { |
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if ($class !== ElementalArea::class) { |
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continue; |
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} |
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/** @var ElementalArea $area */ |
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$area = $this->owner->$key(); |
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if ($area) { |
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foreach ($area->Elements() as $element) { |
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$callback($element); |
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} |
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} |
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} |
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} |
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} |
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silverstripe /
silverstripe-elemental
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