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<?php
/**
* @package Polylang
*/
/**
* Setups the language and translations model based on WordPress taxonomies
*
* @since 1.2
*/
class PLL_Model {
/**
* Internal non persistent cache object.
*
* @var PLL_Cache<mixed>
*/
public $cache;
/**
* Stores the plugin options.
*
* @var array
*/
public $options;
/**
* Translatable objects registry.
*
* @since 3.4
*
* @var PLL_Translatable_Objects
*/
public $translatable_objects;
/**
* Translated post model.
*
* @var PLL_Translated_Post
*/
public $post;
/**
* Translated term model.
*
* @var PLL_Translated_Term
*/
public $term;
/**
* Flag set to true during the language objects creation.
*
* @var bool
*/
private $is_creating_language_objects = false;
/**
* Tells if {@see PLL_Model::get_languages_list()} can be used.
*
* @var bool
*/
private $languages_ready = false;
/**
* Constructor.
* Setups translated objects sub models.
* Setups filters and actions.
*
* @since 1.2
*
* @param array $options Polylang options.
*/
public function __construct( &$options ) {
$this->options = &$options;
$this->cache = new PLL_Cache();
$this->translatable_objects = new PLL_Translatable_Objects();
$this->post = $this->translatable_objects->register( new PLL_Translated_Post( $this ) ); // Translated post sub model.
$this->term = $this->translatable_objects->register( new PLL_Translated_Term( $this ) ); // Translated term sub model.
// We need to clean languages cache when editing a language and when modifying the permalink structure.
add_action( 'edited_term_taxonomy', array( $this, 'clean_languages_cache' ), 10, 2 );
add_action( 'update_option_permalink_structure', array( $this, 'clean_languages_cache' ) );
add_action( 'update_option_siteurl', array( $this, 'clean_languages_cache' ) );
add_action( 'update_option_home', array( $this, 'clean_languages_cache' ) );
add_filter( 'get_terms_args', array( $this, 'get_terms_args' ) );
// Just in case someone would like to display the language description ;).
add_filter( 'language_description', '__return_empty_string' );
}
/**
* Checks if there are languages or not.
*
* @since 3.3
*
* @return bool True if there are, false otherwise.
*/
public function has_languages() {
if ( ! empty( $this->cache->get( 'languages' ) ) ) {
return true;
}
if ( ! empty( get_transient( 'pll_languages_list' ) ) ) {
return true;
}
return ! empty( $this->get_language_terms() );
}
/**
* Returns the list of available languages.
* - Stores the list in a db transient (except flags), unless `PLL_CACHE_LANGUAGES` is set to false.
* - Caches the list (with flags) in a `PLL_Cache` object.
*
* @since 0.1
*
* @param array $args {
* @type bool $hide_empty Hides languages with no posts if set to `true` (defaults to `false`).
* @type bool $hide_default Hides default language from the list (default to `false`).
* @type string $fields Returns only that field if set; {@see PLL_Language} for a list of fields.
* }
* @return array List of PLL_Language objects or PLL_Language object properties.
*/
public function get_languages_list( $args = array() ) {
if ( ! $this->are_languages_ready() ) {
_doing_it_wrong(
__METHOD__ . '()',
"It must not be called before the hook 'pll_pre_init'.",
'3.4'
);
}
$languages = $this->cache->get( 'languages' );
if ( ! is_array( $languages ) ) {
// Bail out early if languages are currently created to avoid an infinite loop.
if ( $this->is_creating_language_objects ) {
return array();
}
$this->is_creating_language_objects = true;
if ( ! pll_get_constant( 'PLL_CACHE_LANGUAGES', true ) ) {
// Create the languages from taxonomies.
$languages = $this->get_languages_from_taxonomies();
} else {
$languages = get_transient( 'pll_languages_list' );
if ( empty( $languages ) || ! is_array( $languages ) || empty( reset( $languages )['term_props'] ) ) { // Test `term_props` in case we got a transient older than 3.4.
// Create the languages from taxonomies.
$languages = $this->get_languages_from_taxonomies();
} else {
// Create the languages directly from arrays stored in the transient.
$languages = array_map(
array( new PLL_Language_Factory( $this->options ), 'get' ),
$languages
);
// Remove potential empty language.
$languages = array_filter( $languages );
// Re-index.
$languages = array_values( $languages );
}
}
/**
* Filters the list of languages *after* it is stored in the persistent cache.
* /!\ This filter is fired *before* the $polylang object is available.
*
* @since 1.8
* @since 3.4 Deprecated. If you used this hook to filter URLs, you may hook `'site_url'` instead.
* @deprecated
*
* @param PLL_Language[] $languages The list of language objects.
*/
$languages = apply_filters_deprecated( 'pll_after_languages_cache', array( $languages ), '3.4' );
if ( $this->are_languages_ready() ) {
$this->cache->set( 'languages', $languages );
}
$this->is_creating_language_objects = false;
}
$languages = array_filter(
$languages,
function ( $lang ) use ( $args ) {
$keep_empty = empty( $args['hide_empty'] ) || $lang->get_tax_prop( 'language', 'count' );
$keep_default = empty( $args['hide_default'] ) || ! $lang->is_default;
return $keep_empty && $keep_default;
}
);
$languages = array_values( $languages ); // Re-index.
return empty( $args['fields'] ) ? $languages : wp_list_pluck( $languages, $args['fields'] );
}
/**
* Tells if {@see PLL_Model::get_languages_list()} can be used.
*
* @since 3.4
*
* @return bool
*/
public function are_languages_ready() {
return $this->languages_ready;
}
/**
* Sets the internal property `$languages_ready` to `true`, telling that {@see PLL_Model::get_languages_list()} can be used.
*
* @since 3.4
*
* @return void
*/
public function set_languages_ready() {
$this->languages_ready = true;
}
/**
* Cleans language cache
* can be called directly with no parameter
* called by the 'edited_term_taxonomy' filter with 2 parameters when count needs to be updated
*
* @since 1.2
*
* @param int $term not used
* @param string $taxonomy taxonomy name
* @return void
*/
public function clean_languages_cache( $term = 0, $taxonomy = null ) {
if ( empty( $taxonomy ) || 'language' === $taxonomy ) {
delete_transient( 'pll_languages_list' );
$this->cache->clean();
}
}
/**
* Don't query term metas when only our taxonomies are queried
*
* @since 2.3
*
* @param array $args WP_Term_Query arguments
* @return array
*/
public function get_terms_args( $args ) {
$taxonomies = $this->translatable_objects->get_taxonomy_names();
if ( isset( $args['taxonomy'] ) && ! array_diff( (array) $args['taxonomy'], $taxonomies ) ) {
$args['update_term_meta_cache'] = false;
}
return $args;
}
/**
* Returns the language by its term_id, tl_term_id, slug or locale.
*
* @since 0.1
* @since 3.4 Allow to get a language by `term_taxonomy_id`.
*
* @param mixed $value `term_id`, `term_taxonomy_id`, `slug`, `locale`, or `w3c` of the queried language.
* `term_id` and `term_taxonomy_id` can be fetched for any language taxonomy.
* /!\ For the `term_taxonomy_id`, prefix the ID by `tt:` (ex: `"tt:{$tt_id}"`),
* this is to prevent confusion between `term_id` and `term_taxonomy_id`.
* @return PLL_Language|false Language object, false if no language found.
*/
public function get_language( $value ) {
if ( is_object( $value ) ) {
return $value instanceof PLL_Language ? $value : $this->get_language( $value->term_id ); // Will force cast to PLL_Language.
}
$return = $this->cache->get( 'language:' . $value );
if ( $return instanceof PLL_Language ) {
return $return;
}
foreach ( $this->get_languages_list() as $lang ) {
foreach ( $lang->get_tax_props() as $props ) {
$this->cache->set( 'language:' . $props['term_id'], $lang );
$this->cache->set( 'language:tt:' . $props['term_taxonomy_id'], $lang );
}
$this->cache->set( 'language:' . $lang->slug, $lang );
$this->cache->set( 'language:' . $lang->locale, $lang );
$this->cache->set( 'language:' . $lang->w3c, $lang );
}
/** @var PLL_Language|false */
return $this->cache->get( 'language:' . $value );
}
/**
* Returns the default language.
*
* @since 3.4
*
* @return PLL_Language|false Default language object, `false` if no language found.
*/
public function get_default_language() {
if ( empty( $this->options['default_lang'] ) ) {
return false;
}
return $this->get_language( $this->options['default_lang'] );
}
/**
* Adds terms clauses to the term query to filter them by languages.
*
* @since 1.2
*
* @param string[] $clauses The list of sql clauses in terms query.
* @param PLL_Language|false $lang PLL_Language object.
* @return string[] Modified list of clauses.
*/
public function terms_clauses( $clauses, $lang ) {
if ( ! empty( $lang ) && false === strpos( $clauses['join'], 'pll_tr' ) ) {
$clauses['join'] .= $this->term->join_clause();
$clauses['where'] .= $this->term->where_clause( $lang );
}
return $clauses;
}
/**
* Returns post types that need to be translated.
* The post types list is cached for better better performance.
* The method waits for 'after_setup_theme' to apply the cache
* to allow themes adding the filter in functions.php.
*
* @since 1.2
*
* @param bool $filter True if we should return only valid registered post types.
* @return string[] Post type names for which Polylang manages languages and translations.
*/
public function get_translated_post_types( $filter = true ) {
return $this->translatable_objects->get( 'post' )->get_translated_object_types( $filter );
}
/**
* Returns true if Polylang manages languages and translations for this post type.
*
* @since 1.2
*
* @param string|string[] $post_type Post type name or array of post type names.
* @return bool
*/
public function is_translated_post_type( $post_type ) {
if ( empty( array_filter( (array) $post_type ) ) ) {
return false;
}
/** @var non-empty-array<non-empty-string>|non-empty-string $post_type */
return $this->translatable_objects->get( 'post' )->is_translated_object_type( $post_type );
}
/**
* Returns taxonomies that need to be translated.
* The taxonomies list is cached for better better performance.
* The method waits for 'after_setup_theme' to apply the cache
* to allow themes adding the filter in functions.php.
*
* @since 1.2
*
* @param bool $filter True if we should return only valid registered taxonomies.
* @return string[] Array of registered taxonomy names for which Polylang manages languages and translations.
*/
public function get_translated_taxonomies( $filter = true ) {
return $this->translatable_objects->get( 'term' )->get_translated_object_types( $filter );
}
/**
* Returns true if Polylang manages languages and translations for this taxonomy.
*
* @since 1.2
*
* @param string|string[] $tax Taxonomy name or array of taxonomy names.
* @return bool
*/
public function is_translated_taxonomy( $tax ) {
if ( empty( array_filter( (array) $tax ) ) ) {
return false;
}
/** @var non-empty-array<non-empty-string>|non-empty-string $tax */
return $this->translatable_objects->get( 'term' )->is_translated_object_type( $tax );
}
/**
* Return taxonomies that need to be filtered (post_format like).
*
* @since 1.7
*
* @param bool $filter True if we should return only valid registered taxonomies.
* @return string[] Array of registered taxonomy names.
*/
public function get_filtered_taxonomies( $filter = true ) {
if ( did_action( 'after_setup_theme' ) ) {
static $taxonomies = null;
}
if ( empty( $taxonomies ) ) {
$taxonomies = array( 'post_format' => 'post_format' );
/**
* Filters the list of taxonomies not translatable but filtered by language.
* Includes only the post format by default
* The filter must be added soon in the WordPress loading process:
* in a function hooked to ‘plugins_loaded’ or directly in functions.php for themes.
*
* @since 1.7
*
* @param string[] $taxonomies List of taxonomy names.
* @param bool $is_settings True when displaying the list of custom taxonomies in Polylang settings.
*/
$taxonomies = apply_filters( 'pll_filtered_taxonomies', $taxonomies, false );
}
return $filter ? array_intersect( $taxonomies, get_taxonomies() ) : $taxonomies;
}
/**
* Returns true if Polylang filters this taxonomy per language.
*
* @since 1.7
*
* @param string|string[] $tax Taxonomy name or array of taxonomy names.
* @return bool
*/
public function is_filtered_taxonomy( $tax ) {
$taxonomies = $this->get_filtered_taxonomies( false );
return ( is_array( $tax ) && array_intersect( $tax, $taxonomies ) || in_array( $tax, $taxonomies ) );
}
/**
* Returns the query vars of all filtered taxonomies.
*
* @since 1.7
*
* @return string[]
*/
public function get_filtered_taxonomies_query_vars() {
$query_vars = array();
foreach ( $this->get_filtered_taxonomies() as $filtered_tax ) {
$tax = get_taxonomy( $filtered_tax );
if ( ! empty( $tax ) && is_string( $tax->query_var ) ) {
$query_vars[] = $tax->query_var;
}
}
return $query_vars;
}
/**
* It is possible to have several terms with the same name in the same taxonomy ( one per language )
* but the native term_exists() will return true even if only one exists.
* So here the function adds the language parameter.
*
* @since 1.4
*
* @param string $term_name The term name.
* @param string $taxonomy Taxonomy name.
* @param int $parent Parent term id.
* @param string|PLL_Language $language The language slug or object.
* @return int The `term_id` of the found term. 0 otherwise.
*
* @phpstan-return int<0, max>
*/
public function term_exists( $term_name, $taxonomy, $parent, $language ) {
global $wpdb;
$language = $this->get_language( $language );
if ( empty( $language ) ) {
return 0;
}
$term_name = trim( wp_unslash( $term_name ) );
$term_name = _wp_specialchars( $term_name );
$select = "SELECT t.term_id FROM $wpdb->terms AS t";
$join = " INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id";
$join .= $this->term->join_clause();
$where = $wpdb->prepare( ' WHERE tt.taxonomy = %s AND t.name = %s', $taxonomy, $term_name );
$where .= $this->term->where_clause( $language );
if ( $parent > 0 ) {
$where .= $wpdb->prepare( ' AND tt.parent = %d', $parent );
}
// PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
$term_id = $wpdb->get_var( $select . $join . $where );
return max( 0, (int) $term_id );
}
/**
* Checks if a term slug exists in a given language, taxonomy, hierarchy.
*
* @since 1.9
* @since 2.8 Moved from PLL_Share_Term_Slug::term_exists() to PLL_Model::term_exists_by_slug().
*
* @param string $slug The term slug to test.
* @param string|PLL_Language $language The language slug or object.
* @param string $taxonomy Optional taxonomy name.
* @param int $parent Optional parent term id.
* @return int The `term_id` of the found term. 0 otherwise.
*/
public function term_exists_by_slug( $slug, $language, $taxonomy = '', $parent = 0 ) {
global $wpdb;
$language = $this->get_language( $language );
if ( empty( $language ) ) {
return 0;
}
$select = "SELECT t.term_id FROM {$wpdb->terms} AS t";
$join = " INNER JOIN {$wpdb->term_taxonomy} AS tt ON t.term_id = tt.term_id";
$join .= $this->term->join_clause();
$where = $wpdb->prepare( ' WHERE t.slug = %s', $slug );
$where .= $this->term->where_clause( $language );
if ( ! empty( $taxonomy ) ) {
$where .= $wpdb->prepare( ' AND tt.taxonomy = %s', $taxonomy );
}
if ( $parent > 0 ) {
$where .= $wpdb->prepare( ' AND tt.parent = %d', $parent );
}
// PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
return $wpdb->get_var( $select . $join . $where );
}
/**
* Returns the number of posts per language in a date, author or post type archive.
*
* @since 1.2
*
* @param PLL_Language $lang PLL_Language instance.
* @param array $q {
* WP_Query arguments:
*
* @type string|string[] $post_type Post type or array of post types.
* @type int $m Combination YearMonth. Accepts any four-digit year and month.
* @type int $year Four-digit year.
* @type int $monthnum Two-digit month.
* @type int $day Day of the month.
* @type int $author Author id.
* @type string $author_name User 'user_nicename'.
* @type string $post_format Post format.
* @type string $post_status Post status.
* }
* @return int
*
* @phpstan-param array{
* post_type?: non-falsy-string|array<non-falsy-string>,
* post_status?: non-falsy-string,
* m?: numeric-string,
* year?: positive-int,
* monthnum?: int<1, 12>,
* day?: int<1, 31>,
* author?: int<1, max>,
* author_name?: non-falsy-string,
* post_format?: non-falsy-string
* } $q
* @phpstan-return int<0, max>
*/
public function count_posts( $lang, $q = array() ) {
global $wpdb;
$q = array_merge( array( 'post_type' => 'post', 'post_status' => 'publish' ), $q );
if ( ! is_array( $q['post_type'] ) ) {
$q['post_type'] = array( $q['post_type'] );
}
foreach ( $q['post_type'] as $key => $type ) {
if ( ! post_type_exists( $type ) ) {
unset( $q['post_type'][ $key ] );
}
}
if ( empty( $q['post_type'] ) ) {
$q['post_type'] = array( 'post' ); // We *need* a post type.
}
$cache_key = $this->cache->get_unique_key( 'pll_count_posts_', $q );
$counts = wp_cache_get( $cache_key, 'counts' );
if ( ! is_array( $counts ) ) {
$counts = array();
$select = "SELECT pll_tr.term_taxonomy_id, COUNT( * ) AS num_posts FROM {$wpdb->posts}";
$join = $this->post->join_clause();
$where = sprintf( " WHERE post_status = '%s'", esc_sql( $q['post_status'] ) );
$where .= sprintf( " AND {$wpdb->posts}.post_type IN ( '%s' )", implode( "', '", esc_sql( $q['post_type'] ) ) );
$where .= $this->post->where_clause( $this->get_languages_list() );
$groupby = ' GROUP BY pll_tr.term_taxonomy_id';
if ( ! empty( $q['m'] ) ) {
$q['m'] = '' . preg_replace( '|[^0-9]|', '', $q['m'] );
$where .= $wpdb->prepare( " AND YEAR( {$wpdb->posts}.post_date ) = %d", substr( $q['m'], 0, 4 ) );
if ( strlen( $q['m'] ) > 5 ) {
$where .= $wpdb->prepare( " AND MONTH( {$wpdb->posts}.post_date ) = %d", substr( $q['m'], 4, 2 ) );
}
if ( strlen( $q['m'] ) > 7 ) {
$where .= $wpdb->prepare( " AND DAYOFMONTH( {$wpdb->posts}.post_date ) = %d", substr( $q['m'], 6, 2 ) );
}
}
if ( ! empty( $q['year'] ) ) {
$where .= $wpdb->prepare( " AND YEAR( {$wpdb->posts}.post_date ) = %d", $q['year'] );
}
if ( ! empty( $q['monthnum'] ) ) {
$where .= $wpdb->prepare( " AND MONTH( {$wpdb->posts}.post_date ) = %d", $q['monthnum'] );
}
if ( ! empty( $q['day'] ) ) {
$where .= $wpdb->prepare( " AND DAYOFMONTH( {$wpdb->posts}.post_date ) = %d", $q['day'] );
}
if ( ! empty( $q['author_name'] ) ) {
$author = get_user_by( 'slug', sanitize_title_for_query( $q['author_name'] ) );
if ( $author ) {
$q['author'] = $author->ID;
}
}
if ( ! empty( $q['author'] ) ) {
$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_author = %d", $q['author'] );
}
// Filtered taxonomies ( post_format ).
foreach ( $this->get_filtered_taxonomies_query_vars() as $tax_qv ) {
if ( ! empty( $q[ $tax_qv ] ) ) {
$join .= " INNER JOIN {$wpdb->term_relationships} AS tr ON tr.object_id = {$wpdb->posts}.ID";
$join .= " INNER JOIN {$wpdb->term_taxonomy} AS tt ON tt.term_taxonomy_id = tr.term_taxonomy_id";
$join .= " INNER JOIN {$wpdb->terms} AS t ON t.term_id = tt.term_id";
$where .= $wpdb->prepare( ' AND t.slug = %s', $q[ $tax_qv ] );
}
}
// PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
$res = $wpdb->get_results( $select . $join . $where . $groupby, ARRAY_A );
foreach ( (array) $res as $row ) {
$counts[ $row['term_taxonomy_id'] ] = $row['num_posts'];
}
wp_cache_set( $cache_key, $counts, 'counts' );
}
$term_taxonomy_id = $lang->get_tax_prop( 'language', 'term_taxonomy_id' );
return empty( $counts[ $term_taxonomy_id ] ) ? 0 : $counts[ $term_taxonomy_id ];
}
/**
* Setup the links model based on options.
*
* @since 1.2
*
* @return PLL_Links_Model
*/
public function get_links_model() {
$c = array( 'Directory', 'Directory', 'Subdomain', 'Domain' );
$class = get_option( 'permalink_structure' ) ? 'PLL_Links_' . $c[ $this->options['force_lang'] ] : 'PLL_Links_Default';
/**
* Filters the links model class to use.
* /!\ this filter is fired *before* the $polylang object is available.
*
* @since 2.1.1
*
* @param string $class A class name: PLL_Links_Default, PLL_Links_Directory, PLL_Links_Subdomain, PLL_Links_Domain.
*/
$class = apply_filters( 'pll_links_model', $class );
return new $class( $this );
}
/**
* Returns a list of object IDs without language (used in settings and wizard).
*
* @since 0.9
* @since 2.2.6 Added the `$limit` parameter.
* @since 3.4 Added the `$types` parameter.
*
* @param int $limit Optional. Max number of IDs to return. Defaults to -1 (no limit).
* @param string[] $types Optional. Types to handle (@see PLL_Translatable_Object::get_type()). Defaults to
* an empty array (all types).
* @return int[][]|false {
* IDs of objects without language.
*
* @type int[] $posts Array of post ids.
* @type int[] $terms Array of term ids.
* }
*
* @phpstan-param -1|positive-int $limit
*/
public function get_objects_with_no_lang( $limit = -1, array $types = array() ) {
/**
* Filters the max number of IDs to return when searching objects with no language.
* This filter can be used to decrease the memory usage in case the number of objects
* without language is too big. Using a negative value is equivalent to have no limit.
*
* @since 2.2.6
* @since 3.4 Added the `$types` parameter.
*
* @param int $limit Max number of IDs to retrieve from the database.
* @param string[] $types Types to handle (@see PLL_Translatable_Object::get_type()). An empty array means all
* types.
*/
$limit = apply_filters( 'get_objects_with_no_lang_limit', $limit, $types );
$limit = $limit < 1 ? -1 : max( (int) $limit, 1 );
$objects = array();
foreach ( $this->translatable_objects as $type => $object ) {
if ( ! empty( $types ) && ! in_array( $type, $types, true ) ) {
continue;
}
$ids = $object->get_objects_with_no_lang( $limit );
if ( empty( $ids ) ) {
continue;
}
// The trailing 's' in the array key is for backward compatibility.
$objects[ "{$type}s" ] = $ids;
}
$objects = ! empty( $objects ) ? $objects : false;
/**
* Filters the list of IDs of untranslated objects.
*
* @since 0.9
* @since 3.4 Added the `$limit` and `$types` parameters.
*
* @param int[][]|false $objects List of lists of object IDs, `false` if no IDs found.
* @param int $limit Max number of IDs to retrieve from the database.
* @param string[] $types Types to handle (@see PLL_Translatable_Object::get_type()). An empty array
* means all types.
*/
return apply_filters( 'pll_get_objects_with_no_lang', $objects, $limit, $types );
}
/**
* Returns ids of post without language.
*
* @since 3.1
*
* @param string|string[] $post_types A translated post type or an array of translated post types.
* @param int $limit Max number of objects to return. `-1` to return all of them.
* @return int[]
*
* @phpstan-param -1|positive-int $limit
* @phpstan-return list<positive-int>
*/
public function get_posts_with_no_lang( $post_types, $limit ) {
return $this->translatable_objects->get( 'post' )->get_objects_with_no_lang( $limit, (array) $post_types );
}
/**
* Returns ids of terms without language.
*
* @since 3.1
*
* @param string|string[] $taxonomies A translated taxonomy or an array of taxonomies post types.
* @param int $limit Max number of objects to return. `-1` to return all of them.
* @return int[]
*
* @phpstan-param -1|positive-int $limit
* @phpstan-return list<positive-int>
*/
public function get_terms_with_no_lang( $taxonomies, $limit ) {
return $this->translatable_objects->get( 'term' )->get_objects_with_no_lang( $limit, (array) $taxonomies );
}
/**
* Assigns the default language to objects in mass.
*
* @since 1.2
* @since 3.4 Moved from PLL_Admin_Model class.
* Removed `$limit` parameter, added `$lang` and `$types` parameters.
*
* @param PLL_Language|null $lang Optional. The language to assign to objects. Defaults to `null` (default language).
* @param string[] $types Optional. Types to handle (@see PLL_Translatable_Object::get_type()). Defaults
* to an empty array (all types).
* @return void
*/
public function set_language_in_mass( $lang = null, array $types = array() ) {
if ( ! $lang instanceof PLL_Language ) {
$lang = $this->get_default_language();
if ( empty( $lang ) ) {
return;
}
}
// 1000 is an arbitrary value that will be filtered by `get_objects_with_no_lang_limit`.
$nolang = $this->get_objects_with_no_lang( 1000, $types );
if ( empty( $nolang ) ) {
return;
}
/**
* Keep track of types where we set the language:
* those are types where we may have more items to process if we have more than 1000 items in total.
* This will prevent unnecessary SQL queries in the next recursion: if we have 0 items in this recursion for
* a type, we'll still have 0 in the next one, no need for a new query.
*/
$types_with_objects = array();
foreach ( $this->translatable_objects as $type => $object ) {
if ( empty( $nolang[ "{$type}s" ] ) ) {
continue;
}
if ( ! empty( $types ) && ! in_array( $type, $types, true ) ) {
continue;
}
$object->set_language_in_mass( $nolang[ "{$type}s" ], $lang );
$types_with_objects[] = $type;
}
if ( empty( $types_with_objects ) ) {
return;
}
$this->set_language_in_mass( $lang, $types_with_objects );
}
/**
* Filters the ORDERBY clause of the languages query.
*
* This allows to order languages terms by `taxonomy` first then by `term_group` and `term_id`.
* Ordering terms by taxonomy allows not to mix terms between all language taxomonomies.
* Having the "language' taxonomy first is important for {@see PLL_Admin_Model:delete_language()}.
*
* @since 3.2.3
*
* @param string $orderby `ORDERBY` clause of the terms query.
* @param array $args An array of term query arguments.
* @param string[] $taxonomies An array of taxonomy names.
* @return string
*/
public function filter_language_terms_orderby( $orderby, $args, $taxonomies ) {
$allowed_taxonomies = $this->translatable_objects->get_taxonomy_names( array( 'language' ) );
if ( ! is_array( $taxonomies ) || ! empty( array_diff( $taxonomies, $allowed_taxonomies ) ) ) {
return $orderby;
}
if ( empty( $orderby ) || ! is_string( $orderby ) ) {
return $orderby;
}
if ( ! preg_match( '@^(?<alias>[^.]+)\.term_group$@', $orderby, $matches ) ) {
return $orderby;
}
return sprintf( 'tt.taxonomy = \'language\' DESC, %1$s.term_group, %1$s.term_id', $matches['alias'] );
}
/**
* Maybe adds the missing language terms for 3rd party language taxonomies.
*
* @since 3.4
*
* @return void
*/
public function maybe_create_language_terms() {
$registered_taxonomies = array_diff(
$this->translatable_objects->get_taxonomy_names( array( 'language' ) ),
// Exclude the post and term language taxonomies from the list.
array( $this->post->get_tax_language(), $this->term->get_tax_language() )
);
if ( empty( $registered_taxonomies ) ) {
// No 3rd party language taxonomies.
return;
}
// We have at least one 3rd party language taxonomy.
$known_taxonomies = ! empty( $this->options['language_taxonomies'] ) && is_array( $this->options['language_taxonomies'] ) ? $this->options['language_taxonomies'] : array();
$new_taxonomies = array_diff( $registered_taxonomies, $known_taxonomies );
if ( empty( $new_taxonomies ) ) {
// No new 3rd party language taxonomies.
return;
}
// We have at least one unknown 3rd party language taxonomy.
foreach ( $this->get_languages_list() as $language ) {
$this->update_secondary_language_terms( $language->slug, $language->name, $language, $new_taxonomies );
}
// Clear the cache, so the new `term_id` and `term_taxonomy_id` appear in the languages list.
$this->clean_languages_cache();
// Keep the previous values, so this is triggered only once per taxonomy.
$this->options['language_taxonomies'] = array_merge( $known_taxonomies, $new_taxonomies );
update_option( 'polylang', $this->options );
}
/**
* Updates or adds new terms for a secondary language taxonomy (aka not 'language').
*
* @since 3.4
*
* @param string $slug Language term slug (with or without the `pll_` prefix).
* @param string $name Language name (label).
* @param PLL_Language|null $language Optional. A language object. Required to update the existing terms.
* @param string[] $taxonomies Optional. List of language taxonomies to deal with. An empty value means
* all of them. Defaults to all taxonomies.
* @return void
*
* @phpstan-param non-empty-string $slug
* @phpstan-param non-empty-string $name
* @phpstan-param array<non-empty-string> $taxonomies
*/
protected function update_secondary_language_terms( $slug, $name, PLL_Language $language = null, array $taxonomies = array() ) {
$slug = 0 === strpos( $slug, 'pll_' ) ? $slug : "pll_$slug";
foreach ( $this->translatable_objects->get_secondary_translatable_objects() as $object ) {
if ( ! empty( $taxonomies ) && ! in_array( $object->get_tax_language(), $taxonomies, true ) ) {
// Not in the list.
continue;
}
if ( ! empty( $language ) ) {
$term_id = $language->get_tax_prop( $object->get_tax_language(), 'term_id' );
} else {
$term_id = 0;
}
if ( empty( $term_id ) ) {
// Attempt to repair the language if a term has been deleted by a database cleaning tool.
wp_insert_term( $name, $object->get_tax_language(), array( 'slug' => $slug ) );
continue;
}
/** @var PLL_Language $language */
if ( "pll_{$language->slug}" !== $slug || $language->name !== $name ) {
// Something has changed.
wp_update_term( $term_id, $object->get_tax_language(), array( 'slug' => $slug, 'name' => $name ) );
}
}
}
/**
* Returns the list of available languages, based on the language taxonomy terms.
* Stores the list in a db transient and in a `PLL_Cache` object.
*
* @since 3.4
*
* @return PLL_Language[] An array of `PLL_Language` objects, array keys are the type.
*
* @phpstan-return list<PLL_Language>
*/
protected function get_languages_from_taxonomies() {
$terms_by_slug = array();
foreach ( $this->get_language_terms() as $term ) {
// Except for language taxonomy term slugs, remove 'pll_' prefix from the other language taxonomy term slugs.
$key = 'language' === $term->taxonomy ? $term->slug : substr( $term->slug, 4 );
$terms_by_slug[ $key ][ $term->taxonomy ] = $term;
}
/**
* @var (
* array{
* string: array{
* language: WP_Term,
* }&array<non-empty-string, WP_Term>
* }
* ) $terms_by_slug
*/
$languages = array_filter(
array_map(
array( new PLL_Language_Factory( $this->options ), 'get_from_terms' ),
array_values( $terms_by_slug )
)
);
/**
* Filters the list of languages *before* it is stored in the persistent cache.
* /!\ This filter is fired *before* the $polylang object is available.
*
* @since 1.7.5
* @since 3.4 Deprecated.
* @deprecated
*
* @param PLL_Language[] $languages The list of language objects.
* @param PLL_Model $model PLL_Model object.
*/
$languages = apply_filters_deprecated( 'pll_languages_list', array( $languages, $this ), '3.4', 'pll_additional_language_data' );
if ( ! $this->are_languages_ready() ) {
// Do not cache an incomplete list.
/** @var list<PLL_Language> $languages */
return $languages;
}
/**
* Don't store directly objects as it badly break with some hosts ( GoDaddy ) due to race conditions when using object cache.
* Thanks to captin411 for catching this!
*
* @see https://wordpress.org/support/topic/fatal-error-pll_model_languages_list?replies=8#post-6782255
*/
$languages_data = array_map(
function ( $language ) {
return $language->to_array( 'db' );
},
$languages
);
set_transient( 'pll_languages_list', $languages_data );
/** @var list<PLL_Language> $languages */
return $languages;
}
/**
* Returns the list of existing language terms.
* - Returns all terms, that are or not assigned to posts.
* - Terms are ordered by `term_group` and `term_id` (see `PLL_Model->filter_language_terms_orderby()`).
*
* @since 3.2.3
*
* @return WP_Term[]
*/
protected function get_language_terms() {
add_filter( 'get_terms_orderby', array( $this, 'filter_language_terms_orderby' ), 10, 3 );
$terms = get_terms(
array(
'taxonomy' => $this->translatable_objects->get_taxonomy_names( array( 'language' ) ),
'orderby' => 'term_group',
'hide_empty' => false,
)
);
remove_filter( 'get_terms_orderby', array( $this, 'filter_language_terms_orderby' ) );
return empty( $terms ) || is_wp_error( $terms ) ? array() : $terms;
}
}