Current File : /var/www/arphotolab.eco-n-tech.co.uk/wp-content/plugins/polylang/include/translated-term.php
<?php
/**
* @package Polylang
*/
/**
* Setups the taxonomies languages and translations model
*
* @since 1.8
*/
class PLL_Translated_Term extends PLL_Translated_Object {
/**
* Constructor
*
* @since 1.8
*
* @param object $model
*/
public function __construct( &$model ) {
$this->object_type = 'term'; // For taxonomies
$this->type = 'term'; // For capabilities
$this->tax_language = 'term_language';
$this->tax_translations = 'term_translations';
$this->tax_tt = 'tl_term_taxonomy_id';
parent::__construct( $model );
// Filters to prime terms cache
add_filter( 'get_terms', array( $this, '_prime_terms_cache' ), 10, 2 );
add_filter( 'get_object_terms', array( $this, 'wp_get_object_terms' ), 10, 3 );
add_action( 'clean_term_cache', array( $this, 'clean_term_cache' ) );
}
/**
* Stores the term language in the database.
*
* @since 0.6
*
* @param int $term_id Term id.
* @param int|string|PLL_Language $lang Language (term_id or slug or object).
* @return void
*/
public function set_language( $term_id, $lang ) {
$term_id = (int) $term_id;
$old_lang = $this->get_language( $term_id );
$old_lang = $old_lang ? $old_lang->tl_term_id : '';
$lang = $this->model->get_language( $lang );
$lang = $lang ? $lang->tl_term_id : '';
if ( $old_lang !== $lang ) {
wp_set_object_terms( $term_id, $lang, 'term_language' );
// Add translation group for correct WXR export
$translations = $this->get_translations( $term_id );
if ( $slug = array_search( $term_id, $translations ) ) {
unset( $translations[ $slug ] );
}
$this->save_translations( $term_id, $translations );
}
}
/**
* Removes the term language in database
*
* @since 0.5
*
* @param int $term_id term id
* @return void
*/
public function delete_language( $term_id ) {
wp_delete_object_term_relationships( $term_id, 'term_language' );
}
/**
* Returns the language of a term
*
* @since 0.1
*
* @param int|string $value term id or term slug
* @param string $taxonomy optional taxonomy needed when the term slug is passed as first parameter
* @return PLL_Language|false PLL_Language object, false if no language is associated to that term
*/
public function get_language( $value, $taxonomy = '' ) {
if ( is_numeric( $value ) ) {
$term_id = $value;
}
// get_term_by still not cached in WP 3.5.1 but internally, the function is always called by term_id
elseif ( is_string( $value ) && $taxonomy ) {
$term = get_term_by( 'slug', $value, $taxonomy );
if ( $term instanceof WP_Term ) {
$term_id = $term->term_id;
}
}
// Get the language and make sure it is a PLL_Language object
return isset( $term_id ) && ( $lang = $this->get_object_term( $term_id, 'term_language' ) ) ? $this->model->get_language( $lang->term_id ) : false;
}
/**
* Tells whether a translation term must updated.
*
* @since 2.3
*
* @param int $id Post id or term id.
* @param int[] $translations An associative array of translations with language code as key and translation id as value.
* @return bool
*/
protected function should_update_translation_group( $id, $translations ) {
// Don't do anything if no translations have been added to the group
$old_translations = $this->get_translations( $id );
if ( count( $translations ) > 1 && count( array_diff_assoc( $translations, $old_translations ) ) > 0 ) {
return true;
}
// But we need a translation group for terms to allow relationships remap when importing from a WXR file
$term = $this->get_object_term( $id, $this->tax_translations );
return empty( $term ) || count( array_diff_assoc( $translations, $old_translations ) );
}
/**
* Deletes a translation
*
* @since 0.5
*
* @param int $id term id
* @return void
*/
public function delete_translation( $id ) {
global $wpdb;
$slug = array_search( $id, $this->get_translations( $id ) ); // in case some plugin stores the same value with different key
parent::delete_translation( $id );
wp_delete_object_term_relationships( $id, 'term_translations' );
if ( ! doing_action( 'pre_delete_term' ) && $wpdb->get_var( $wpdb->prepare( "SELECT COUNT( * ) FROM $wpdb->terms WHERE term_id = %d;", $id ) ) ) {
// Always keep a group for terms to allow relationships remap when importing from a WXR file
$translations = array( $slug => $id );
wp_insert_term( $group = uniqid( 'pll_' ), 'term_translations', array( 'description' => maybe_serialize( $translations ) ) );
wp_set_object_terms( $id, $group, 'term_translations' );
}
}
/**
* A join clause to add to sql queries when filtering by language is needed directly in query
*
* @since 1.2
* @since 2.6 The `$alias` parameter was added.
*
* @param string $alias Alias for $wpdb->terms table
* @return string join clause
*/
public function join_clause( $alias = 't' ) {
global $wpdb;
return " INNER JOIN $wpdb->term_relationships AS pll_tr ON pll_tr.object_id = $alias.term_id";
}
/**
* Caches the language and translations when terms are queried by get_terms().
*
* @since 1.2
*
* @param WP_Term[]|int[] $terms Queried terms.
* @param string[] $taxonomies Queried taxonomies.
* @return WP_Term[]|int[] Unmodified $terms.
*/
public function _prime_terms_cache( $terms, $taxonomies ) {
$term_ids = array();
if ( is_array( $terms ) && $this->model->is_translated_taxonomy( $taxonomies ) ) {
foreach ( $terms as $term ) {
$term_ids[] = is_object( $term ) ? $term->term_id : (int) $term;
}
}
if ( ! empty( $term_ids ) ) {
update_object_term_cache( array_unique( $term_ids ), 'term' ); // Adds language and translation of terms to cache
}
return $terms;
}
/**
* When terms are found for posts, add their language and translations to cache.
*
* @since 1.2
*
* @param WP_Term[] $terms Array of terms for the given object or objects.
* @param int[] $object_ids Array of object IDs for which terms were retrieved.
* @param string[] $taxonomies Array of taxonomy names from which terms were retrieved.
* @return WP_Term[] Unmodified $terms.
*/
public function wp_get_object_terms( $terms, $object_ids, $taxonomies ) {
if ( ! in_array( 'term_translations', $taxonomies ) ) {
$this->_prime_terms_cache( $terms, $taxonomies );
}
return $terms;
}
/**
* When the term cache is cleaned, cleans the object term cache too.
*
* @since 2.0
*
* @param int[] $ids An array of term IDs.
* @return void
*/
public function clean_term_cache( $ids ) {
clean_object_term_cache( $ids, 'term' );
}
}
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