96 lines
3.1 KiB
PHP
96 lines
3.1 KiB
PHP
<?php
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/**
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* Provides a simple search engine for your site based on the MySQL FULLTEXT index.
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* Adds the {@link FulltextSearchable} extension to data classes,
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* as well as the {@link ContentControllerSearchExtension} to {@link ContentController}.
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* (this means you can use $SearchForm in your template without changing your own implementation).
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*
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* @see http://doc.silverstripe.org/tutorial:4-site-search
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*
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* @package sapphire
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* @subpackage search
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*/
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class FulltextSearchable extends DataObjectDecorator {
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/**
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* @var String Comma-separated list of database column names
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* that can be searched on. Used for generation of the database index defintions.
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*/
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protected $searchFields;
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/**
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* @var Array List of class names
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*/
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protected static $searchable_classes;
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/**
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* Enable the default configuration of MySQL full-text searching on the given data classes.
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* It can be used to limit the searched classes, but not to add your own classes.
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* For this purpose, please use {@link Object::add_extension()} directly:
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* <code>
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* Object::add_extension('MyObject', "FulltextSearchable('MySearchableField,'MyOtherField')");
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* </code>
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*
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* Caution: This is a wrapper method that should only be used in _config.php,
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* and only be called once in your code.
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*
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* @param Array $searchableClasses The extension will be applied to all DataObject subclasses
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* listed here. Default: {@link SiteTree} and {@link File}.
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*/
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static function enable($searchableClasses = array('SiteTree', 'File')) {
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$defaultColumns = array(
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'SiteTree' => 'Title,MenuTitle,Content,MetaTitle,MetaDescription,MetaKeywords',
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'File' => 'Filename,Title,Content'
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);
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if(!is_array($searchableClasses)) $searchableClasses = array($searchableClasses);
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foreach($searchableClasses as $class) {
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if(isset($defaultColumns[$class])) {
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Object::add_extension($class, "FulltextSearchable('{$defaultColumns[$class]}')");
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} else {
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throw new Exception("FulltextSearchable::enable() I don't know the default search columns for class '$class'");
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}
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}
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self::$searchable_classes = $searchableClasses;
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if(class_exists("ContentController")){
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Object::add_extension("ContentController", "ContentControllerSearchExtension");
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}
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}
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/**
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* @param Array|String $searchFields Comma-separated list (or array) of database column names
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* that can be searched on. Used for generation of the database index defintions.
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*/
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function __construct($searchFields) {
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if(is_array($searchFields)) $this->searchFields = implode(',', $searchFields);
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else $this->searchFields = $searchFields;
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parent::__construct();
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}
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function extraStatics($class = null, $extension = null) {
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if($extension && preg_match('/\([\'"](.*)[\'"]\)/', $extension, $matches)) {
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$searchFields = $matches[1];
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return array(
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'indexes' => array(
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"SearchFields" => Array(
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'type'=>'fulltext',
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'name'=>'SearchFields',
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'value'=> $searchFields
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),
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)
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);
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}
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}
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/**
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* Shows all classes that had the {@link FulltextSearchable} extension applied through {@link enable()}.
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*
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* @return Array
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*/
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function get_searchable_classes() {
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return self::$searchable_classes;
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}
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} |