Viewing file:  frontend.php (7.24 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
<?php
/**
* frontend controller
* accessible as $polylang global object
*
* properties:
* options => inherited, reference to Polylang options array
* model => inherited, reference to PLL_Model object
* links_model => inherited, reference to PLL_Links_Model object
* links => reference to PLL_Links object
* static_pages => reference to PLL_Frontend_Static_Pages object
* filters_links => inherited, reference to PLL_Frontend_Filters_Links object
* choose_lang => reference to PLL_Choose_lang object
* curlang => current language
* filters => reference to PLL_Filters object
* filters_search => reference to PLL_Frontend_Filters_Search object
* nav_menu => reference to PLL_Frontend_Nav_Menu object
* auto_translate => optional, reference to PLL_Auto_Translate object
*
* @since 1.2
*/
class PLL_Frontend extends PLL_Base {
public $curlang;
public $links, $choose_lang, $filters, $filters_search, $nav_menu, $auto_translate;
/**
* constructor
*
* @since 1.2
*
* @param object $links_model
*/
public function __construct( &$links_model ) {
parent::__construct( $links_model );
add_action( 'pll_language_defined', array( $this, 'pll_language_defined' ), 1 );
// avoids the language being the queried object when querying multiple taxonomies
add_action( 'parse_tax_query', array( $this, 'parse_tax_query' ), 1 );
// filters posts by language
add_action( 'parse_query', array( $this, 'parse_query' ), 6 );
// not before 'check_canonical_url'
if ( ! defined( 'PLL_AUTO_TRANSLATE' ) || PLL_AUTO_TRANSLATE ) {
add_action( 'template_redirect', array( $this, 'auto_translate' ), 7 );
}
}
/**
* setups the language chooser based on options
*
* @since 1.2
*/
public function init() {
$this->links = new PLL_Frontend_Links( $this );
$this->static_pages = new PLL_Frontend_Static_Pages( $this );
// setup the language chooser
$c = array( 'Content', 'Url', 'Url', 'Domain' );
$class = 'PLL_Choose_Lang_' . $c[ $this->options['force_lang'] ];
$this->choose_lang = new $class( $this );
$this->choose_lang->init();
// need to load nav menu class early to correctly define the locations in the customizer when the language is set from the content
$this->nav_menu = new PLL_Frontend_Nav_Menu( $this );
}
/**
* setups filters and nav menus once the language has been defined
*
* @since 1.2
*/
public function pll_language_defined() {
// filters
$this->filters_links = new PLL_Frontend_Filters_Links( $this );
$this->filters = new PLL_Frontend_Filters( $this );
$this->filters_search = new PLL_Frontend_Filters_Search( $this );
}
/**
* when querying multiple taxonomies, makes sure that the language is not the queried object
*
* @since 1.8
*
* @param object $query WP_Query object
*/
public function parse_tax_query( $query ) {
$queried_taxonomies = $this->get_queried_taxonomies( $query );
if ( ! empty( $queried_taxonomies ) && 'language' == reset( $queried_taxonomies ) ) {
$query->tax_query->queried_terms['language'] = array_shift( $query->tax_query->queried_terms );
}
}
/**
* modifies some query vars to "hide" that the language is a taxonomy and avoid conflicts
*
* @since 1.2
*
* @param object $query WP_Query object
*/
public function parse_query( $query ) {
$qv = $query->query_vars;
$taxonomies = $this->get_queried_taxonomies( $query );
// to avoid returning an empty result if the query includes a translated taxonomy in a different language
$has_tax = isset( $query->tax_query->queries ) && $this->model->have_translated_taxonomy( $query->tax_query->queries );
// allow filtering recent posts and secondary queries by the current language
// take care not to break queries for non visible post types such as nav_menu_items
// do not filter if lang is set to an empty value
// do not filter single page and translated taxonomies to avoid conflicts
if ( ! empty( $this->curlang ) && ! isset( $qv['lang'] ) && ! $has_tax && empty( $qv['page_id'] ) && empty( $qv['pagename'] ) ) {
if ( $taxonomies && ( empty( $qv['post_type'] ) || 'any' === $qv['post_type'] ) ) {
foreach ( $taxonomies as $taxonomy ) {
$tax_object = get_taxonomy( $taxonomy );
if ( $this->model->is_translated_post_type( $tax_object->object_type ) ) {
$this->choose_lang->set_lang_query_var( $query, $this->curlang );
break;
}
}
} elseif ( empty( $qv['post_type'] ) || $this->model->is_translated_post_type( $qv['post_type'] ) ) {
$this->choose_lang->set_lang_query_var( $query, $this->curlang );
}
}
// modifies query vars when the language is queried
if ( ! empty( $qv['lang'] ) || ( ! empty( $taxonomies ) && array( 'language') == array_values( $taxonomies ) ) ) {
// do we query a custom taxonomy?
$taxonomies = array_diff( $taxonomies , array( 'language', 'category', 'post_tag' ) );
// remove pages query when the language is set unless we do a search
// take care not to break the single page, attachment and taxonomies queries!
if ( empty( $qv['post_type'] ) && ! $query->is_search && ! $query->is_page && ! $query->is_attachment && empty( $taxonomies ) ) {
$query->set( 'post_type', 'post' );
}
// unset the is_archive flag for language pages to prevent loading the archive template
// keep archive flag for comment feed otherwise the language filter does not work
if ( empty( $taxonomies ) && ! $query->is_comment_feed && ! $query->is_post_type_archive && ! $query->is_date && ! $query->is_author && ! $query->is_category && ! $query->is_tag ) {
$query->is_archive = false;
}
// unset the is_tax flag except if another custom tax is queried
if ( empty( $taxonomies ) && ($query->is_category || $query->is_tag || $query->is_author || $query->is_post_type_archive || $query->is_date || $query->is_search || $query->is_feed ) ) {
$query->is_tax = false;
unset( $query->queried_object ); // FIXME useless?
}
}
}
/**
* auto translate posts and terms ids
*
* @since 1.2
*/
public function auto_translate() {
$this->auto_translate = new PLL_Frontend_Auto_Translate( $this );
}
/**
* resets some variables when switching blog
* overrides parent method
*
* @since 1.5.1
*/
public function switch_blog( $new_blog, $old_blog ) {
// need to check that some languages are defined when user is logged in, has several blogs, some without any languages
if ( parent::switch_blog( $new_blog, $old_blog ) && did_action( 'pll_language_defined' ) && $this->model->get_languages_list() ) {
static $restore_curlang;
if ( empty( $restore_curlang ) ) {
$restore_curlang = $this->curlang->slug; // to always remember the current language through blogs
}
$lang = $this->model->get_language( $restore_curlang );
$this->curlang = $lang ? $lang : $this->model->get_language( $this->options['default_lang'] );
$this->static_pages->init();
$this->load_strings_translations();
}
}
/**
* get queried taxonomies
*
* @since 1.8
*
* @param object $query WP_Query object
* @return array queried taxonomies
*/
protected function get_queried_taxonomies( $query ) {
return isset( $query->tax_query->queried_terms ) ? array_keys( wp_list_filter( $query->tax_query->queried_terms, array( 'operator' => 'NOT IN' ), 'NOT' ) ) : array();
}
}
|