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<?php |
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|
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// setups basic functions |
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abstract class Polylang_Base { |
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|
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// returns the query variables of the referer |
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function get_referer_vars() { |
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$qvars = array(); |
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$referer = wp_get_referer(); |
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if ($referer) { |
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$urlparts = parse_url($referer); |
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if (isset($urlparts['query'])) { |
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parse_str($urlparts['query'], $qvars); |
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} |
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} |
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return $qvars; |
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} |
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|
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// returns the list of available languages |
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function get_languages_list($hide_empty = false) { |
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return get_terms('language', array('hide_empty'=>$hide_empty)); |
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} |
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|
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// returns the language by its id or its slug |
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// Note: it seems that the first option is better for performance (3.2.1) |
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function get_language($value) { |
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if (is_numeric($value)) |
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return get_term($value, 'language'); |
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elseif (is_string($value)) |
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return get_term_by('slug', $value , 'language'); // seems it is not cached in 3.2.1 |
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return null; |
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} |
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|
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// deletes a translation of a post or term |
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function delete_translation($type, $id) { |
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$translations = unserialize(get_metadata($type, $id, '_translations', true)); |
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if (is_array($translations)) { |
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$slug = array_search($id, $translations); |
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unset($translations[$slug]); |
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$tr = serialize($translations); |
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foreach($translations as $key=>$p) |
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update_metadata($type, $p, '_translations', $tr); |
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delete_metadata($type, $id, '_translations'); |
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} |
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} |
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|
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// returns the id of the translation of a post or term |
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function get_translation($type, $id, $lang) { |
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$translations = unserialize(get_metadata($type, $id, '_translations', true)); |
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$slug = is_string($lang) ? $lang : $lang->slug; |
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return isset($translations[$slug]) ? $translations[$slug] : ''; |
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} |
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|
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// returns the language of a post |
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function get_post_language($post_id) { |
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$lang = get_the_terms($post_id, 'language' ); |
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return ($lang) ? reset($lang) : null; // there's only one language per post : first element of the array returned |
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} |
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|
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// among the post and its translations, returns the id of the post which is in $lang |
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function get_post($post_id, $lang) { |
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$slug = is_string($lang) ? $lang : $lang->slug; |
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return $this->get_post_language($post_id)->slug == $slug ? $post_id : $this->get_translation('post', $post_id, $lang); |
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} |
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|
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function update_term_language($term_id, $lang) { |
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if (is_numeric($lang)) |
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$lang_id = $lang; |
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elseif(is_string($lang)) |
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$lang_id = $this->get_language($lang)->term_id; |
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else |
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$lang_id = $lang->term_id; |
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|
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update_metadata('term', $term_id, '_language', $lang_id ); |
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} |
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|
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function delete_term_language($term_id) { |
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delete_metadata('term', $term_id, '_language'); |
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} |
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|
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// returns the language of a term |
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function get_term_language($value, $taxonomy = '') { |
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if (is_numeric($value)) |
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$term_id = $value; |
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elseif (is_string($value) && $taxonomy) |
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$term_id = get_term_by('slug', $value , $taxonomy)->term_id; |
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return $term_id ? $this->get_language(get_metadata('term', $term_id, '_language', true)) : null; |
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} |
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|
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// among the term and its translations, returns the id of the term which is in $lang |
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function get_term($term_id, $lang) { |
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$slug = is_string($lang) ? $lang : $lang->slug; |
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return $this->get_term_language($term_id)->slug == $slug ? $term_id : $this->get_translation('term', $term_id, $lang); |
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} |
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|
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// returns the html link to the flag if exists |
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function get_flag($lang) { |
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return ( !is_admin() && ( // never use local flags on admin side |
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file_exists(POLYLANG_DIR.($file = '/local_flags/'.$lang->description.'.png')) || |
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file_exists(POLYLANG_DIR.($file = '/local_flags/'.$lang->description.'.jpg')) )) || |
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file_exists(POLYLANG_DIR.($file = '/flags/'.$lang->description.'.png')) ? |
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'<img src="'.esc_url(WP_PLUGIN_URL.'/polylang'.$file).'" alt="'.esc_attr($lang->name).'" />' : ''; |
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} |
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|
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// adds terms clauses to get_terms - used in both frontend and admin |
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function _terms_clauses($clauses, $lang, $display_all = false) { |
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global $wpdb; |
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if (isset($lang) && !is_wp_error($lang)) { |
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$clauses['join'] .= " LEFT JOIN $wpdb->termmeta AS tm ON t.term_id = tm.term_id"; |
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$where_lang = $wpdb->prepare("tm.meta_key = '_language' AND tm.meta_value = %d", $lang->term_id); // add terms in the right language |
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$where_all = "t.term_id NOT IN (SELECT term_id FROM $wpdb->termmeta WHERE meta_key IN ('_language'))"; // add terms with no language set |
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$clauses['where'] .= $display_all ? " AND (($where_lang) OR ($where_all))" : " AND $where_lang"; |
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} |
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return $clauses; |
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} |
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|
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} //class Polylang_Base |
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?> |
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|
