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<?php |
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/** |
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* @package Polylang |
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*/ |
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|
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/** |
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* A class to manage the sychronization of taxonomy terms across posts translations |
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* |
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* @since 2.3 |
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*/ |
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class PLL_Sync_Tax { |
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|
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/** |
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* Constructor |
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* |
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* @since 2.3 |
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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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$this->model = &$polylang->model; |
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$this->options = &$polylang->options; |
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|
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add_action( 'set_object_terms', array( $this, 'set_object_terms' ), 10, 5 ); |
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add_action( 'pll_save_term', array( $this, 'create_term' ), 10, 3 ); |
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add_action( 'pre_delete_term', array( $this, 'pre_delete_term' ) ); |
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add_action( 'delete_term', array( $this, 'delete_term' ) ); |
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} |
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|
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/** |
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* Get the list of taxonomies to copy or to synchronize |
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* |
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* @since 1.7 |
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* @since 2.1 The `$from`, `$to`, `$lang` parameters were added. |
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* |
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* @param bool $sync True if it is synchronization, false if it is a copy |
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* @param int $from Id of the post from which we copy informations, optional, defaults to null |
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* @param int $to Id of the post to which we paste informations, optional, defaults to null |
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* @param string $lang Language slug, optional, defaults to null |
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* @return array List of taxonomy names |
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*/ |
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protected function get_taxonomies_to_copy( $sync, $from = null, $to = null, $lang = null ) { |
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$taxonomies = ! $sync || in_array( 'taxonomies', $this->options['sync'] ) ? $this->model->get_translated_taxonomies() : array(); |
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if ( ! $sync || in_array( 'post_format', $this->options['sync'] ) ) { |
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$taxonomies[] = 'post_format'; |
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} |
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|
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/** |
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* Filter the taxonomies to copy or synchronize |
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* |
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* @since 1.7 |
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* @since 2.1 The `$from`, `$to`, `$lang` parameters were added. |
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* |
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* @param array $taxonomies List of taxonomy names |
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* @param bool $sync True if it is synchronization, false if it is a copy |
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* @param int $from Id of the post from which we copy informations |
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* @param int $to Id of the post to which we paste informations |
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* @param string $lang Language slug |
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*/ |
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return array_unique( apply_filters( 'pll_copy_taxonomies', $taxonomies, $sync, $from, $to, $lang ) ); |
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} |
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|
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/** |
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* When copying or synchronizing terms, translate terms in translatable taxonomies |
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* |
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* @since 2.3 |
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* |
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* @param array $object_id Object ID |
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* @param array $terms List of terms ids assigned to the source post |
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* @param string $taxonomy Taxonomy name |
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* @param string $lang Language slug |
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* @return array List of terms ids to assign to the target post |
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*/ |
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protected function maybe_translate_terms( $object_id, $terms, $taxonomy, $lang ) { |
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if ( is_array( $terms ) && $this->model->is_translated_taxonomy( $taxonomy ) ) { |
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$newterms = array(); |
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|
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// Convert to term ids if we got tag names |
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$strings = array_map( 'is_string', $terms ); |
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if ( in_array( true, $strings, true ) ) { |
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$terms = get_the_terms( $object_id, $taxonomy ); |
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$terms = wp_list_pluck( $terms, 'term_id' ); |
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} |
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|
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foreach ( $terms as $term ) { |
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/** |
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* Filter the translated term when a post translation is created or synchronized |
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* |
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* @since 2.3 |
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* |
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* @param int $tr_term Translated term id |
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* @param int $term Source term id |
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* @param string $lang Language slug |
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*/ |
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if ( $term_id = apply_filters( 'pll_maybe_translate_term', $this->model->term->get_translation( $term, $lang ), $term, $lang ) ) { |
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$newterms[] = (int) $term_id; // Cast is important otherwise we get 'numeric' tags |
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} |
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} |
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|
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return $newterms; |
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} |
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|
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return $terms; // Empty $terms or untranslated taxonomy |
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} |
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|
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/** |
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* Maybe copy taxonomy terms from one post to the other |
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* |
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* @since 2.6 |
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* |
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* @param int $object_id Source object ID. |
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* @param int $tr_id Target object ID. |
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* @param string $lang Target language. |
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* @param array $terms An array of object terms. |
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* @param string $taxonomy Taxonomy slug. |
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* @param bool $append Whether to append new terms to the old terms. |
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*/ |
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protected function copy_object_terms( $object_id, $tr_id, $lang, $terms, $taxonomy, $append ) { |
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$to_copy = $this->get_taxonomies_to_copy( true, $object_id, $tr_id, $lang ); |
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|
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if ( in_array( $taxonomy, $to_copy ) ) { |
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$newterms = $this->maybe_translate_terms( $object_id, $terms, $taxonomy, $lang ); |
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|
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// For some reasons, the user may have untranslated terms in the translation. Don't forget them. |
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if ( $this->model->is_translated_taxonomy( $taxonomy ) ) { |
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$tr_terms = get_the_terms( $tr_id, $taxonomy ); |
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if ( is_array( $tr_terms ) ) { |
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foreach ( $tr_terms as $term ) { |
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if ( ! $this->model->term->get_translation( $term->term_id, $this->model->post->get_language( $object_id ) ) ) { |
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$newterms[] = (int) $term->term_id; |
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} |
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} |
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} |
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} |
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|
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wp_set_object_terms( $tr_id, $newterms, $taxonomy, $append ); |
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} |
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|
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} |
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|
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/** |
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* When assigning terms to a post, assign translated terms to the translated posts (synchronisation) |
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* |
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* @since 2.3 |
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* |
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* @param int $object_id Object ID. |
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* @param array $terms An array of object terms. |
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* @param array $tt_ids An array of term taxonomy IDs. |
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* @param string $taxonomy Taxonomy slug. |
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* @param bool $append Whether to append new terms to the old terms. |
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*/ |
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public function set_object_terms( $object_id, $terms, $tt_ids, $taxonomy, $append ) { |
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static $avoid_recursion = false; |
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$taxonomy_object = get_taxonomy( $taxonomy ); |
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|
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// Make sure that the taxonomy is registered for a post type |
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if ( ! $avoid_recursion && array_filter( $taxonomy_object->object_type, 'post_type_exists' ) ) { |
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$avoid_recursion = true; |
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|
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$tr_ids = $this->model->post->get_translations( $object_id ); |
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|
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foreach ( $tr_ids as $lang => $tr_id ) { |
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if ( $tr_id !== $object_id ) { |
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if ( $this->model->post->current_user_can_synchronize( $object_id ) ) { |
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$this->copy_object_terms( $object_id, $tr_id, $lang, $terms, $taxonomy, $append ); |
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} else { |
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// No permission to synchronize, so let's synchronize in reverse order |
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$orig_lang = array_search( $object_id, $tr_ids ); |
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$tr_terms = get_the_terms( $tr_id, $taxonomy ); |
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|
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if ( false === $tr_terms ) { |
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$tr_terms = array(); |
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} |
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|
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if ( is_array( $tr_terms ) ) { |
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$tr_terms = wp_list_pluck( $tr_terms, 'term_id' ); |
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$this->copy_object_terms( $tr_id, $object_id, $orig_lang, $tr_terms, $taxonomy, $append ); |
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} |
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break; |
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} |
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} |
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} |
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|
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$avoid_recursion = false; |
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} |
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} |
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|
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/** |
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* Copy terms fron one post to a translation, does not sync |
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* |
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* @since 2.3 |
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* |
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* @param int $from Id of the source post |
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* @param int $to Id of the target post |
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* @param string $lang Language slug |
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*/ |
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public function copy( $from, $to, $lang ) { |
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remove_action( 'set_object_terms', array( $this, 'set_object_terms' ), 10, 6 ); |
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|
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// Get taxonomies to sync for this post type |
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$taxonomies = array_intersect( get_post_taxonomies( $from ), $this->get_taxonomies_to_copy( false, $from, $to, $lang ) ); |
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|
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// Update the term cache to reduce the number of queries in the loop |
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update_object_term_cache( $from, get_post_type( $from ) ); |
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|
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// Copy |
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foreach ( $taxonomies as $tax ) { |
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if ( $terms = get_the_terms( $from, $tax ) ) { |
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$terms = array_map( 'intval', wp_list_pluck( $terms, 'term_id' ) ); |
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$newterms = $this->maybe_translate_terms( $from, $terms, $tax, $lang ); |
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|
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if ( ! empty( $newterms ) ) { |
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wp_set_object_terms( $to, $newterms, $tax ); |
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} |
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} |
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} |
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|
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add_action( 'set_object_terms', array( $this, 'set_object_terms' ), 10, 6 ); |
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} |
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|
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/** |
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* When creating a new term, associate it to posts having translations associated to the translated terms |
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* |
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* @since 2.3 |
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* |
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* @param int $term_id Id of the created term |
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* @param string $taxonomy Taxonomy |
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* @param array $translations Ids of the translations of the created term |
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*/ |
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public function create_term( $term_id, $taxonomy, $translations ) { |
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if ( doing_action( 'create_term' ) && in_array( $taxonomy, $this->get_taxonomies_to_copy( true ) ) ) { |
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// Get all posts associated to the translated terms |
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$tr_posts = get_posts( |
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array( |
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'numberposts' => -1, |
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'nopaging' => true, |
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'post_type' => 'any', |
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'post_status' => 'any', |
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'fields' => 'ids', |
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'tax_query' => array( |
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array( |
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'taxonomy' => $taxonomy, |
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'field' => 'id', |
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'terms' => array_merge( array( $term_id ), array_values( $translations ) ), |
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'include_children' => false, |
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), |
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), |
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) |
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); |
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|
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$lang = $this->model->term->get_language( $term_id ); // Language of the created term |
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$posts = array(); |
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|
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foreach ( $tr_posts as $post_id ) { |
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$post = $this->model->post->get_translation( $post_id, $lang ); |
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|
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if ( $post ) { |
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$posts[] = $post; |
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} |
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} |
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|
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$posts = array_unique( $posts ); |
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|
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foreach ( $posts as $post_id ) { |
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if ( current_user_can( 'assign_term', $term_id ) ) { |
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wp_set_object_terms( $post_id, $term_id, $taxonomy, true ); |
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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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* Deactivate the synchronization of terms before deleting a term |
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* to avoid translated terms to be removed from translated posts |
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* |
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* @since 2.3.2 |
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*/ |
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public function pre_delete_term() { |
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remove_action( 'set_object_terms', array( $this, 'set_object_terms' ), 10, 5 ); |
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} |
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|
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/** |
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* Re-activate the synchronization of terms after a term is deleted |
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* |
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* @since 2.3.2 |
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*/ |
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public function delete_term() { |
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add_action( 'set_object_terms', array( $this, 'set_object_terms' ), 10, 5 ); |
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} |
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} |
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|
