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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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// converts the locale to a valid W3C locale |
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add_filter( 'language_attributes', array( &$this, 'language_attributes' ) ); |
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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 $wpdb; |
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|
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// don't filter comments if comment ids or post ids are specified |
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$plucked = wp_array_slice_assoc( $query->query_vars, array( 'comment__in', 'parent', 'post_id', 'post__in', 'post_parent' ) ); |
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$fields = array_filter( $plucked ); |
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if ( ! empty( $fields ) ) { |
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return $clauses; |
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} |
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|
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// don't filter comments if a non translated post type is specified |
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if ( ! empty( $query->query_vars['post_type'] ) && ! $this->model->is_translated_post_type( $query->query_vars['post_type'] ) ) { |
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return $clauses; |
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} |
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|
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$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 = $wpdb->comments.comment_post_ID"; |
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} |
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|
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$clauses['join'] .= $this->model->post->join_clause(); |
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$clauses['where'] .= $this->model->post->where_clause( $lang ); |
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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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|
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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->post->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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|
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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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* converts WordPress locale to valid W3 locale in html language attributes |
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* |
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* @since 1.8 |
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* |
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* @param string $output language attributes |
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* @return string |
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*/ |
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public function language_attributes( $output ) { |
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if ( $language = $this->model->get_language( get_locale() ) ) { |
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$output = str_replace( '"' . get_bloginfo( 'language' ) . '"', '"' . $language->get_locale( 'display' ) . '"', $output ); |
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} |
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return $output; |
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} |
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} |
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