Viewing file:  frontend-links.php (6.39 KB) -rw-r--r--
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<?php
/**
* manages links filters and url of translations on frontend
*
* @since 1.2
*/
class PLL_Frontend_Links extends PLL_Links {
public $curlang;
public $cache; // our internal non persistent cache object
/**
* constructor
*
* @since 1.2
*
* @param object $polylang
*/
public function __construct( &$polylang ) {
parent::__construct( $polylang );
$this->curlang = &$polylang->curlang;
$this->cache = new PLL_Cache();
}
/**
* returns the url of the translation ( if exists ) of the current page
*
* @since 0.1
*
* @param object $language
* @return string
*/
public function get_translation_url( $language ) {
global $wp_query;
if ( false !== $translation_url = $this->cache->get( 'translation_url:' . $language->slug ) ) {
return $translation_url;
}
// make sure that we have the queried object
// see https://wordpress.org/support/topic/patch-for-fixing-a-notice
$queried_object_id = $wp_query->get_queried_object_id();
/**
* Filter the translation url before Polylang attempts to find one
* Internally used by Polylang for the static front page and posts page
*
* @since 1.8
*
* @param string $url empty or the url of the translation of teh current page
* @param object $language language of the translation
* @param int $queried_object_id queried object id
*/
if ( ! $url = apply_filters( 'pll_pre_translation_url', '', $language, $queried_object_id ) ) {
$qv = $wp_query->query_vars;
$hide = $this->options['default_lang'] == $language->slug && $this->options['hide_default'];
// post and attachment
if ( is_single() && ( $this->options['media_support'] || ! is_attachment() ) && ( $id = $this->model->post->get( $queried_object_id, $language ) ) && $this->current_user_can_read( $id ) ) {
$url = get_permalink( $id );
}
// page
elseif ( is_page() && ( $id = $this->model->post->get( $queried_object_id, $language ) ) && $this->current_user_can_read( $id ) ) {
$url = get_page_link( $id );
}
elseif ( is_search() ) {
$url = $this->get_archive_url( $language );
// special case for search filtered by translated taxonomies: taxonomy terms are translated in the translation url
if ( ! empty( $wp_query->tax_query->queries ) ) {
foreach ( $wp_query->tax_query->queries as $tax_query ) {
if ( ! empty( $tax_query['taxonomy'] ) && $this->model->is_translated_taxonomy( $tax_query['taxonomy'] ) ) {
$tax = get_taxonomy( $tax_query['taxonomy'] );
$terms = get_terms( $tax->name, array( 'fields' => 'id=>slug' ) ); // filtered by current language
foreach ( $tax_query['terms'] as $slug ) {
$term_id = array_search( $slug, $terms ); // what is the term_id corresponding to taxonomy term?
if ( $term_id && $term_id = $this->model->term->get_translation( $term_id, $language ) ) { // get the translated term_id
$term = get_term( $term_id, $tax->name );
$url = str_replace( $slug, $term->slug, $url );
}
}
}
}
}
}
// translated taxonomy
// take care that is_tax() is false for categories and tags
elseif ( ( is_category() || is_tag() || is_tax() ) && ( $term = get_queried_object() ) && $this->model->is_translated_taxonomy( $term->taxonomy ) ) {
$lang = $this->model->term->get_language( $term->term_id );
if ( ! $lang || $language->slug == $lang->slug ) {
$url = wpcom_vip_get_term_link( $term, $term->taxonomy ); // self link
}
elseif ( $tr_id = $this->model->term->get_translation( $term->term_id, $language ) ) {
$tr_term = get_term( $tr_id, $term->taxonomy );
// check if translated term ( or children ) have posts
if ( $tr_term && ( $tr_term->count || ( is_taxonomy_hierarchical( $term->taxonomy ) && array_sum( wp_list_pluck( get_terms( $term->taxonomy, array( 'child_of' => $tr_term->term_id, 'lang' => $language->slug ) ), 'count' ) ) ) ) ) {
$url = wpcom_vip_get_term_link( $tr_term, $term->taxonomy );
}
}
}
// post type archive
elseif ( is_post_type_archive() ) {
if ( $this->model->is_translated_post_type( $qv['post_type'] ) && $this->model->count_posts( $language, array( 'post_type' => $qv['post_type'] ) ) ) {
$url = $this->get_archive_url( $language );
}
}
elseif ( is_archive() ) {
$keys = array( 'post_type', 'm', 'year', 'monthnum', 'day', 'author', 'author_name' );
$keys = array_merge( $keys, $this->model->get_filtered_taxonomies_query_vars() );
// check if there are existing translations before creating the url
if ( $this->model->count_posts( $language, array_intersect_key( $qv, array_flip( $keys ) ) ) ) {
$url = $this->get_archive_url( $language );
}
}
// front page when it is the list of posts
elseif ( is_front_page() ) {
$url = $this->get_home_url( $language );
}
}
/**
* Filter the translation url of the current page before Polylang caches it
*
* @since 1.1.2
*
* @param null|string $url the translation url, null if none was found
* @param string $language the language code of the translation
*/
$translation_url = apply_filters( 'pll_translation_url', ( isset( $url ) && ! is_wp_error( $url ) ? $url : null ), $language->slug );
$this->cache->set( 'translation_url:' . $language->slug, $translation_url );
return $translation_url;
}
/**
* get the translation of the current archive url
* used also for search
*
* @since 1.2
*
* @param object $language
* @return string
*/
public function get_archive_url( $language ) {
$url = ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$url = $this->links_model->switch_language_in_link( $url, $language );
$url = $this->links_model->remove_paged_from_link( $url );
/**
* Filter the archive url
*
* @since 1.6
*
* @param string $url url of the archive
* @param object $language language of the archive
*/
return apply_filters( 'pll_get_archive_url', $url, $language );
}
/**
* returns the home url in the right language
*
* @since 0.1
*
* @param object $language optional defaults to current language
* @param bool $is_search optional wether we need the home url for a search form, defaults to false
*/
public function get_home_url( $language = '', $is_search = false ) {
if ( empty( $language ) ) {
$language = $this->curlang;
}
return parent::get_home_url( $language, $is_search );
}
}
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