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<?php |
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|
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/* |
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* setup filters common to admin and frontend |
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* |
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* @since 1.4 |
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*/ |
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class PLL_Filters { |
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public $links_model, $model, $options, $curlang; |
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|
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/* |
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* constructor: setups filters |
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* |
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* @since 1.4 |
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* |
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* @param object $polylang |
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*/ |
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public function __construct(&$polylang) { |
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$this->links_model = &$polylang->links_model; |
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$this->model = &$polylang->model; |
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$this->options = &$polylang->options; |
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$this->curlang = &$polylang->curlang; |
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|
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// filters the comments according to the current language |
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add_filter('comments_clauses', array(&$this, 'comments_clauses'), 10, 2); |
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|
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// filters the get_pages function according to the current language |
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add_filter('get_pages', array(&$this, 'get_pages'), 10, 2); |
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|
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// adds cache domain when querying terms |
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add_filter('get_terms_args', array(&$this, 'get_terms_args')); |
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} |
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|
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/* |
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* filters the comments according to the current language |
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* used by the recent comments widget and admin language filter |
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* |
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* @since 0.2 |
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* |
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* @param array $clauses sql clauses |
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* @param object $query WP_Comment_Query object |
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* @return array modified $clauses |
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*/ |
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public function comments_clauses($clauses, $query) { |
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global $wpdb; |
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|
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$lang = empty($query->query_vars['lang']) ? $this->curlang : $this->model->get_language($query->query_vars['lang']); |
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|
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if (!empty($lang)) { |
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// if this clause is not already added by WP |
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if (!strpos($clauses['join'], '.ID')) |
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$clauses['join'] .= " JOIN $wpdb->posts ON $wpdb->posts.ID = $wpdb->comments.comment_post_ID"; |
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|
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$clauses['join'] .= $this->model->join_clause('post'); |
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$clauses['where'] .= $this->model->where_clause($lang, 'post'); |
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} |
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return $clauses; |
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} |
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|
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/* |
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* filters get_pages per language |
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* |
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* @since 1.4 |
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* |
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* @param array $pages an array of pages already queried |
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* @param array $args get_pages arguments |
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* @return array modified list of pages |
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*/ |
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public function get_pages($pages, $args) { |
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$language = empty($args['lang']) ? $this->curlang : $this->model->get_language($args['lang']); |
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|
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if (empty($language) || empty($pages) || !$this->model->is_translated_post_type($args['post_type'])) |
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return $pages; |
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|
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static $once = false; |
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|
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// obliged to redo the get_pages query if we want to get the right number |
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if (!empty($args['number']) && !$once) { |
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$once = true; // avoid infinite loop |
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|
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$r = array( |
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'lang' => 0, // so this query is not filtered |
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'numberposts' => -1, |
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'nopaging' => true, |
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'post_type' => $args['post_type'], |
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'fields' => 'ids', |
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'tax_query' => array(array( |
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'taxonomy' => 'language', |
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'field' => 'term_taxonomy_id', // since WP 3.5 |
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'terms' => $language->term_taxonomy_id, |
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'operator' => 'NOT IN' |
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)) |
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); |
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|
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$args['exclude'] = array_merge($args['exclude'], get_posts($r)); |
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$pages = get_pages($args); |
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} |
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|
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$ids = wp_list_pluck($pages, 'ID'); |
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|
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// filters the queried list of pages by language |
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if (!$once) { |
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$ids = array_intersect($ids, $this->model->get_objects_in_language($language)); |
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|
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foreach ($pages as $key => $page) { |
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if (!in_array($page->ID, $ids)) |
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unset($pages[$key]); |
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} |
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} |
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|
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// not done by WP but extremely useful for performance when manipulating taxonomies |
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update_object_term_cache($ids, $args['post_type']); |
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|
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$once = false; // in case get_pages is called another time |
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return $pages; |
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} |
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|
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/* |
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* adds language dependent cache domain when querying terms |
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* useful as the 'lang' parameter is not included in cache key by WordPress |
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* |
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* @since 1.3 |
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*/ |
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public function get_terms_args($args) { |
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if (!empty($args['lang'])) |
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$lang = $args['lang']; |
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elseif (!empty($this->curlang)) |
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$lang = $this->curlang->slug; |
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|
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if (isset($lang)) { |
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$key = '_' . (is_array($lang) ? implode(',', $lang) : $lang); |
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$args['cache_domain'] = empty($args['cache_domain']) ? 'pll' . $key : $args['cache_domain'] . $key; |
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} |
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|
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return $args; |
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} |
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} |
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|
