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<?php |
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namespace SilverStripe\CMS\Search; |
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use BadMethodCallException; |
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use SilverStripe\Assets\File; |
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use SilverStripe\CMS\Model\SiteTree; |
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use SilverStripe\Control\RequestHandler; |
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use SilverStripe\Forms\FieldList; |
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use SilverStripe\Forms\Form; |
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use SilverStripe\Forms\FormAction; |
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use SilverStripe\Forms\HiddenField; |
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use SilverStripe\Forms\TextField; |
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use SilverStripe\ORM\DB; |
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use SilverStripe\ORM\SS_List; |
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use Translatable; |
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/** |
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* Standard basic search form which conducts a fulltext search on all {@link SiteTree} |
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* objects. |
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* |
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* If multilingual content is enabled through the {@link Translatable} extension, |
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* only pages the currently set language on the holder for this searchform are found. |
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* The language is set through a hidden field in the form, which is prepoluated |
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* with {@link Translatable::get_current_locale()} when then form is constructed. |
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* |
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* @see Use ModelController and SearchContext for a more generic search implementation based around DataObject |
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*/ |
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class SearchForm extends Form |
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{ |
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/** |
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* How many results are shown per page. |
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* Relies on pagination being implemented in the search results template. |
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* |
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* @var int |
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*/ |
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protected $pageLength = 10; |
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/** |
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* Classes to search |
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* |
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* @var array |
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*/ |
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protected $classesToSearch = array( |
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SiteTree::class, |
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File::class |
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); |
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private static $casting = array( |
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'SearchQuery' => 'Text' |
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); |
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/** |
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* @skipUpgrade |
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* @param RequestHandler $controller |
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* @param string $name The name of the form (used in URL addressing) |
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* @param FieldList $fields Optional, defaults to a single field named "Search". Search logic needs to be customized |
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* if fields are added to the form. |
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* @param FieldList $actions Optional, defaults to a single field named "Go". |
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*/ |
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public function __construct( |
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RequestHandler $controller = null, |
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$name = 'SearchForm', |
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FieldList $fields = null, |
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FieldList $actions = null |
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) { |
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if (!$fields) { |
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$fields = new FieldList( |
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new TextField('Search', _t('SearchForm.SEARCH', 'Search')) |
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); |
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} |
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if (class_exists('Translatable') |
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&& SiteTree::singleton()->hasExtension('Translatable') |
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) { |
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$fields->push(new HiddenField('searchlocale', 'searchlocale', Translatable::get_current_locale())); |
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} |
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if (!$actions) { |
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$actions = new FieldList( |
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new FormAction("results", _t('SearchForm.GO', 'Go')) |
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); |
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} |
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parent::__construct($controller, $name, $fields, $actions); |
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$this->setFormMethod('get'); |
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$this->disableSecurityToken(); |
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} |
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/** |
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* Set the classes to search. |
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* Currently you can only choose from "SiteTree" and "File", but a future version might improve this. |
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* |
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* @param array $classes |
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*/ |
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public function classesToSearch($classes) |
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{ |
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$supportedClasses = array(SiteTree::class, File::class); |
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$illegalClasses = array_diff($classes, $supportedClasses); |
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if ($illegalClasses) { |
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throw new BadMethodCallException( |
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"SearchForm::classesToSearch() passed illegal classes '" . implode("', '", $illegalClasses) |
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. "'. At this stage, only File and SiteTree are allowed" |
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); |
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} |
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$legalClasses = array_intersect($classes, $supportedClasses); |
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$this->classesToSearch = $legalClasses; |
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} |
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/** |
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* Get the classes to search |
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* |
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* @return array |
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*/ |
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public function getClassesToSearch() |
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{ |
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return $this->classesToSearch; |
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} |
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/** |
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* Return dataObjectSet of the results using current request to get info from form. |
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* Wraps around {@link searchEngine()}. |
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* |
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* @return SS_List |
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*/ |
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public function getResults() |
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{ |
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// Get request data from request handler |
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$request = $this->getRequestHandler()->getRequest(); |
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// set language (if present) |
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$locale = null; |
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$origLocale = null; |
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if (class_exists('Translatable')) { |
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$locale = $request->requestVar('searchlocale'); |
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View Code Duplication |
if (SiteTree::singleton()->hasExtension('Translatable') && $locale) { |
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if ($locale === "ALL") { |
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Translatable::disable_locale_filter(); |
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} else { |
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$origLocale = Translatable::get_current_locale(); |
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Translatable::set_current_locale($locale); |
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} |
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} |
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} |
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$keywords = $request->requestVar('Search'); |
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$andProcessor = create_function('$matches', ' |
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return " +" . $matches[2] . " +" . $matches[4] . " "; |
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'); |
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$notProcessor = create_function('$matches', ' |
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return " -" . $matches[3]; |
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'); |
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$keywords = preg_replace_callback('/()("[^()"]+")( and )("[^"()]+")()/i', $andProcessor, $keywords); |
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$keywords = preg_replace_callback('/(^| )([^() ]+)( and )([^ ()]+)( |$)/i', $andProcessor, $keywords); |
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$keywords = preg_replace_callback('/(^| )(not )("[^"()]+")/i', $notProcessor, $keywords); |
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$keywords = preg_replace_callback('/(^| )(not )([^() ]+)( |$)/i', $notProcessor, $keywords); |
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$keywords = $this->addStarsToKeywords($keywords); |
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$pageLength = $this->getPageLength(); |
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$start = $request->requestVar('start') ?: 0; |
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$booleanSearch = |
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strpos($keywords, '"') !== false || |
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strpos($keywords, '+') !== false || |
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strpos($keywords, '-') !== false || |
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strpos($keywords, '*') !== false; |
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$results = DB::get_conn()->searchEngine($this->classesToSearch, $keywords, $start, $pageLength, "\"Relevance\" DESC", "", $booleanSearch); |
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// filter by permission |
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if ($results) { |
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foreach ($results as $result) { |
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if (!$result->canView()) { |
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$results->remove($result); |
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} |
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} |
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} |
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// reset locale |
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View Code Duplication |
if (class_exists('Translatable')) { |
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if (SiteTree::singleton()->hasExtension('Translatable') && $locale) { |
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if ($locale == "ALL") { |
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Translatable::enable_locale_filter(); |
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} else { |
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Translatable::set_current_locale($origLocale); |
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} |
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} |
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} |
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return $results; |
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} |
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protected function addStarsToKeywords($keywords) |
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{ |
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if (!trim($keywords)) { |
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return ""; |
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} |
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// Add * to each keyword |
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$splitWords = preg_split("/ +/", trim($keywords)); |
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$newWords = []; |
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while (list($i,$word) = each($splitWords)) { |
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if ($word[0] == '"') { |
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while (list($i,$subword) = each($splitWords)) { |
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$word .= ' ' . $subword; |
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if (substr($subword, -1) == '"') { |
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break; |
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} |
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} |
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} else { |
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$word .= '*'; |
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} |
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$newWords[] = $word; |
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} |
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return implode(" ", $newWords); |
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} |
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/** |
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* Get the search query for display in a "You searched for ..." sentence. |
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* |
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* @return string |
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*/ |
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public function getSearchQuery() |
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{ |
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return $this->getRequestHandler()->getRequest()->requestVar('Search'); |
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} |
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/** |
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* Set the maximum number of records shown on each page. |
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* |
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* @param int $length |
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*/ |
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public function setPageLength($length) |
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{ |
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$this->pageLength = $length; |
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} |
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/** |
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* @return int |
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*/ |
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public function getPageLength() |
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{ |
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return $this->pageLength; |
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} |
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} |
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