| 1 |
<?php |
| 2 |
/** |
| 3 |
* @package Polylang |
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*/ |
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|
| 6 |
/** |
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* Setups the objects languages and translations model. |
| 8 |
* |
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* @since 1.8 |
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*/ |
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abstract class PLL_Translated_Object { |
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/** |
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* @var PLL_Model |
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*/ |
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public $model; |
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|
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/** |
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* Object type to use when registering the taxonomies. |
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* Left empty for posts. |
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* |
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* @var string|null |
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*/ |
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protected $object_type; |
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|
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/** |
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* Object type to use when checking capabilities. |
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* |
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* @var string |
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*/ |
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protected $type; |
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|
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/** |
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* Taxonomy name for the languages. |
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* |
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* @var string |
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*/ |
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protected $tax_language; |
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|
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/** |
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* Taxonomy name for the translation groups. |
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* |
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* @var string |
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*/ |
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protected $tax_translations; |
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|
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/** |
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* PLL_Language property name for the term_taxonomy id. |
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* |
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* @var string |
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*/ |
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protected $tax_tt; |
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|
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/** |
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* Constructor. |
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* |
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* @since 1.8 |
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* |
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* @param PLL_Model $model Instance of PLL_Model. |
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*/ |
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public function __construct( &$model ) { |
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$this->model = &$model; |
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|
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/* |
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* Register our taxonomies as soon as possible. |
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* This is early registration, not ready for rewrite rules as $wp_rewrite will be setup later. |
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*/ |
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$args = array( 'label' => false, 'public' => false, 'query_var' => false, 'rewrite' => false, '_pll' => true ); |
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register_taxonomy( $this->tax_language, $this->object_type, $args ); |
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$args['update_count_callback'] = '_update_generic_term_count'; // Count *all* objects to avoid deleting in clean_translations_terms. |
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register_taxonomy( $this->tax_translations, $this->object_type, $args ); |
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} |
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|
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/** |
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* Stores the language in the database. |
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* |
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* @since 0.6 |
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* |
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* @param int $id Object id. |
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* @param int|string|PLL_Language $lang Language (term_id or slug or object). |
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* @return void |
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*/ |
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abstract public function set_language( $id, $lang ); |
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|
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/** |
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* Returns the language of an object. |
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* |
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* @since 0.1 |
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* |
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* @param int $id Object id. |
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* @return PLL_Language|false PLL_Language object, false if no language is associated to that object. |
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*/ |
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abstract public function get_language( $id ); |
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|
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/** |
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* Wrap wp_get_object_terms() to cache it and return only one object. |
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* inspired by the WordPress function get_the_terms(). |
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* |
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* @since 1.2 |
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* |
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* @param int $object_id Object id ( typically a post_id or term_id ). |
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* @param string $taxonomy Polylang taxonomy depending if we are looking for a post ( or term ) language ( or translation ). |
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* @return WP_Term|false The term associated to the object in the requested taxonomy if it exists, false otherwise. |
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*/ |
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public function get_object_term( $object_id, $taxonomy ) { |
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if ( empty( $object_id ) || is_wp_error( $object_id ) ) { |
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return false; |
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} |
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|
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$object_id = (int) $object_id; |
| 110 |
|
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if ( $object_id < 0 ) { |
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return false; |
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} |
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|
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$term = get_object_term_cache( $object_id, $taxonomy ); |
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|
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if ( false === $term ) { |
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// Query language and translations at the same time. |
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$taxonomies = array( $this->tax_language, $this->tax_translations ); |
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|
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// Query terms. |
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$terms = array(); |
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$object_terms = wp_get_object_terms( $object_id, $taxonomies, array( 'update_term_meta_cache' => false ) ); |
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if ( is_array( $object_terms ) ) { |
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foreach ( $object_terms as $t ) { |
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$terms[ $t->taxonomy ] = $t; |
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if ( $t->taxonomy == $taxonomy ) { |
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$term = $t; |
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} |
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} |
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} |
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|
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// Stores it the way WP expects it. Set an empty cache if no term was found in the taxonomy. |
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foreach ( $taxonomies as $tax ) { |
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wp_cache_add( $object_id, empty( $terms[ $tax ] ) ? array() : array( $terms[ $tax ] ), $tax . '_relationships' ); |
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} |
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} |
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else { |
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$term = reset( $term ); |
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} |
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|
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return empty( $term ) ? false : $term; |
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} |
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|
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/** |
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* Tells whether a translation term must be updated. |
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* |
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* @since 2.3 |
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* |
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* @param int $id Object id ( typically a post_id or term_id ). |
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* @param int[] $translations An associative array of translations with language code as key and translation id as value. |
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* @return bool |
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*/ |
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protected function should_update_translation_group( $id, $translations ) { |
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// Don't do anything if no translations have been added to the group. |
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$old_translations = $this->get_translations( $id ); // Includes at least $id itself. |
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return count( array_diff_assoc( $translations, $old_translations ) ) > 0; |
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} |
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|
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/** |
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* Saves translations for posts or terms. |
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* |
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* @since 0.5 |
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* |
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* @param int $id Object id ( typically a post_id or term_id ). |
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* @param int[] $translations An associative array of translations with language code as key and translation id as value. |
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* @return void |
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*/ |
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public function save_translations( $id, $translations ) { |
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$id = (int) $id; |
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|
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if ( ( $lang = $this->get_language( $id ) ) && is_array( $translations ) ) { |
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// Sanitize the translations array. |
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$translations = array_map( 'intval', $translations ); |
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$translations = array_merge( array( $lang->slug => $id ), $translations ); // Make sure this object is in translations. |
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$translations = array_diff( $translations, array( 0 ) ); // Don't keep non translated languages. |
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$translations = array_intersect_key( $translations, array_flip( $this->model->get_languages_list( array( 'fields' => 'slug' ) ) ) ); // Keep only valid languages slugs as keys. |
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|
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// Unlink removed translations. |
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$old_translations = $this->get_translations( $id ); |
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foreach ( array_diff_assoc( $old_translations, $translations ) as $object_id ) { |
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$this->delete_translation( $object_id ); |
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} |
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|
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// Check id we need to create or update the translation group. |
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if ( $this->should_update_translation_group( $id, $translations ) ) { |
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$terms = wp_get_object_terms( $translations, $this->tax_translations ); |
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$term = reset( $terms ); |
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|
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// Create a new term if necessary. |
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if ( empty( $term ) ) { |
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wp_insert_term( $group = uniqid( 'pll_' ), $this->tax_translations, array( 'description' => maybe_serialize( $translations ) ) ); |
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} else { |
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// Take care not to overwrite extra data stored in the description field, if any. |
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$d = maybe_unserialize( $term->description ); |
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$d = is_array( $d ) ? array_diff_key( $d, $old_translations ) : array(); // Remove old translations. |
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$d = array_merge( $d, $translations ); // Add new one. |
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wp_update_term( $group = (int) $term->term_id, $this->tax_translations, array( 'description' => maybe_serialize( $d ) ) ); |
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} |
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|
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// Link all translations to the new term. |
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foreach ( $translations as $p ) { |
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wp_set_object_terms( $p, $group, $this->tax_translations ); |
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} |
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|
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// Clean now unused translation groups. |
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foreach ( wp_list_pluck( $terms, 'term_id' ) as $term_id ) { |
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$term = get_term( $term_id, $this->tax_translations ); |
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if ( empty( $term->count ) ) { |
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wp_delete_term( $term_id, $this->tax_translations ); |
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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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/** |
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* Deletes a translation of a post or term. |
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* |
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* @since 0.5 |
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* |
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* @param int $id Object id ( typically a post_id or term_id ). |
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* @return void |
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*/ |
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public function delete_translation( $id ) { |
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$id = (int) $id; |
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$term = $this->get_object_term( $id, $this->tax_translations ); |
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|
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if ( ! empty( $term ) ) { |
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$d = maybe_unserialize( $term->description ); |
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if ( is_array( $d ) ) { |
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$slug = array_search( $id, $this->get_translations( $id ) ); // In case some plugin stores the same value with different key. |
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unset( $d[ $slug ] ); |
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} |
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|
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if ( empty( $d ) ) { |
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wp_delete_term( (int) $term->term_id, $this->tax_translations ); |
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} else { |
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wp_update_term( (int) $term->term_id, $this->tax_translations, array( 'description' => maybe_serialize( $d ) ) ); |
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} |
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} |
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} |
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|
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/** |
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* Returns an array of translations of a post or term. |
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* |
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* @since 0.5 |
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* |
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* @param int $id Object id ( typically a post_id or term_id ). |
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* @return int[] An associative array of translations with language code as key and translation id as value. |
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*/ |
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public function get_translations( $id ) { |
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$term = $this->get_object_term( $id, $this->tax_translations ); |
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$translations = empty( $term ) ? array() : maybe_unserialize( $term->description ); |
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|
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// Make sure we return only translations ( thus we allow plugins to store other information in the array ). |
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if ( is_array( $translations ) ) { |
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$translations = array_intersect_key( $translations, array_flip( $this->model->get_languages_list( array( 'fields' => 'slug' ) ) ) ); |
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} |
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|
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// Make sure to return at least the passed object in its translation array. |
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if ( empty( $translations ) && $lang = $this->get_language( $id ) ) { |
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$translations = array( $lang->slug => $id ); |
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} |
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|
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return $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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* |
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* @since 0.5 |
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* |
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* @param int $id Object id ( typically a post_id or term_id ). |
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* @param PLL_Language|string $lang Language ( slug or object ). |
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* @return int|false Object id of the translation, false if there is none. |
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*/ |
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public function get_translation( $id, $lang ) { |
| 279 |
if ( ! $lang = $this->model->get_language( $lang ) ) { |
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return false; |
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} |
| 282 |
|
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$translations = $this->get_translations( $id ); |
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|
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return isset( $translations[ $lang->slug ] ) ? $translations[ $lang->slug ] : false; |
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} |
| 287 |
|
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/** |
| 289 |
* Among the object and its translations, returns the id of the object which is in $lang |
| 290 |
* |
| 291 |
* @since 0.1 |
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* |
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* @param int $id Object id ( typically a post_id or term_id ). |
| 294 |
* @param int|string|PLL_Language $lang Language ( term_id or slug or object ). |
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* @return int|false The translation object id if exists, otherwise the passed id, false if the passed object has no language. |
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*/ |
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public function get( $id, $lang ) { |
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$id = (int) $id; |
| 299 |
$lang = $this->model->get_language( $lang ); |
| 300 |
$obj_lang = $this->get_language( $id ); |
| 301 |
if ( empty( $lang ) || empty( $obj_lang ) ) { |
| 302 |
return false; |
| 303 |
} |
| 304 |
|
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return $obj_lang->term_id == $lang->term_id ? $id : $this->get_translation( $id, $lang ); |
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} |
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|
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/** |
| 309 |
* A join clause to add to sql queries when filtering by language is needed directly in query. |
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* |
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* @since 1.2 |
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* |
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* @param string $alias Optional alias for object table. |
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* @return string Join clause. |
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*/ |
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abstract public function join_clause( $alias = '' ); |
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|
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/** |
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* A where clause to add to sql queries when filtering by language is needed directly in query. |
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* |
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* @since 1.2 |
| 322 |
* |
| 323 |
* @param PLL_Language|string|string[] $lang PLL_Language object or a comma separated list of language slug or an array of language slugs. |
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* @return string Where clause. |
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*/ |
| 326 |
public function where_clause( $lang ) { |
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$tt_id = $this->tax_tt; |
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|
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/* |
| 330 |
* $lang is an object. |
| 331 |
* This is generally the case if the query is coming from Polylang. |
| 332 |
*/ |
| 333 |
if ( is_object( $lang ) ) { |
| 334 |
return ' AND pll_tr.term_taxonomy_id = ' . absint( $lang->$tt_id ); |
| 335 |
} |
| 336 |
|
| 337 |
/* |
| 338 |
* $lang is a comma separated list of slugs ( or an array of slugs ). |
| 339 |
* This is generally the case is the query is coming from outside with a 'lang' parameter. |
| 340 |
*/ |
| 341 |
$slugs = is_array( $lang ) ? $lang : explode( ',', $lang ); |
| 342 |
$languages = array(); |
| 343 |
foreach ( $slugs as $slug ) { |
| 344 |
$languages[] = absint( $this->model->get_language( $slug )->$tt_id ); |
| 345 |
} |
| 346 |
|
| 347 |
return ' AND pll_tr.term_taxonomy_id IN ( ' . implode( ',', $languages ) . ' )'; |
| 348 |
} |
| 349 |
|
| 350 |
/** |
| 351 |
* Returns ids of objects in a language similarly to get_objects_in_term() for a taxonomy. |
| 352 |
* It is faster than get_objects_in_term() as it avoids a JOIN. |
| 353 |
* |
| 354 |
* @since 1.4 |
| 355 |
* |
| 356 |
* @param PLL_Language $lang PLL_Language object. |
| 357 |
* @return int[] Object ids. |
| 358 |
*/ |
| 359 |
public function get_objects_in_language( $lang ) { |
| 360 |
global $wpdb; |
| 361 |
$tt_id = $this->tax_tt; |
| 362 |
|
| 363 |
$last_changed = wp_cache_get_last_changed( 'terms' ); |
| 364 |
$cache_key = "polylang:get_objects_in_language:{$lang->$tt_id}:{$last_changed}"; |
| 365 |
$cache = wp_cache_get( $cache_key, 'terms' ); |
| 366 |
|
| 367 |
if ( false === $cache ) { |
| 368 |
$object_ids = $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $lang->$tt_id ) ); |
| 369 |
wp_cache_set( $cache_key, $object_ids, 'terms' ); |
| 370 |
} else { |
| 371 |
$object_ids = (array) $cache; |
| 372 |
} |
| 373 |
|
| 374 |
if ( ! $object_ids ) { |
| 375 |
return array(); |
| 376 |
} |
| 377 |
|
| 378 |
return $object_ids; |
| 379 |
} |
| 380 |
|
| 381 |
/** |
| 382 |
* Check if a user can synchronize translations. |
| 383 |
* |
| 384 |
* @since 2.6 |
| 385 |
* |
| 386 |
* @param int $id Object id. |
| 387 |
* @return bool |
| 388 |
*/ |
| 389 |
public function current_user_can_synchronize( $id ) { |
| 390 |
/** |
| 391 |
* Filters whether a synchronization capability check should take place. |
| 392 |
* |
| 393 |
* @since 2.6 |
| 394 |
* |
| 395 |
* @param bool|null $check Null to enable the capability check, |
| 396 |
* true to always allow the synchronization, |
| 397 |
* false to always disallow the synchronization. |
| 398 |
* Defaults to true. |
| 399 |
* @param int $id The synchronization source object id. |
| 400 |
*/ |
| 401 |
$check = apply_filters( "pll_pre_current_user_can_synchronize_{$this->type}", true, $id ); |
| 402 |
if ( null !== $check ) { |
| 403 |
return $check; |
| 404 |
} |
| 405 |
|
| 406 |
if ( ! current_user_can( "edit_{$this->type}", $id ) ) { |
| 407 |
return false; |
| 408 |
} |
| 409 |
|
| 410 |
foreach ( $this->get_translations( $id ) as $tr_id ) { |
| 411 |
if ( $tr_id !== $id && ! current_user_can( "edit_{$this->type}", $tr_id ) ) { |
| 412 |
return false; |
| 413 |
} |
| 414 |
} |
| 415 |
|
| 416 |
return true; |
| 417 |
} |
| 418 |
} |
| 419 |
|
