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class-site.php
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<?php
class Sublanguage_site extends Sublanguage_rewrite {
/**
* @var boolean
*/
var $canonical = true;
/**
* @compat from 2.0
* @var int
*/
var $current_language;
/**
*
* @from 1.0
*/
public function __construct() {
add_filter('locale', array($this, 'get_locale'));
add_action('plugins_loaded', array($this, 'load'));
}
/**
* @from 1.4.7
*/
public function load() {
if ($this->current_language = $this->get_language()) {
parent::load();
add_filter('the_content', array($this, 'translate_post_content'), 9); // -> allowed @from 2.5
add_filter('the_title', array($this, 'translate_post_title'), 10, 2);
add_filter('get_the_excerpt', array($this, 'translate_post_excerpt'), 9);
add_filter('single_post_title', array($this, 'translate_single_post_title'), 10, 2);
add_filter('get_post_metadata', array($this, 'translate_meta_data'), 10, 4);
add_filter('wp_setup_nav_menu_item', array($this, 'translate_menu_nav_item'));
add_filter('wp_nav_menu_objects', array($this, 'filter_nav_menu_objects'), 10, 2); // -> @from 1.5. Filter list for hidden items
add_filter('tag_cloud_sort', array($this,'translate_tag_cloud'), 10, 2);
add_action('init', array($this, 'init'));
$this->add_options_filters();
}
}
/**
* @from 1.0
*/
public function init() {
if (get_option('permalink_structure')) {
add_filter('query_vars', array($this, 'query_vars'));
add_filter('request', array($this, 'catch_translation')); // detect query type and language out of query vars
add_action('wp', array($this, 'redirect_uncanonical'), 11);
}
// enqueue AJAX script
if ($this->get_option('frontend_ajax')) {
add_action('wp_enqueue_scripts', array($this, 'ajax_enqueue_scripts'));
}
// link filters only after request have been parsed
add_action('parse_request', array($this, 'add_links_translation_filters'));
// link filter on rest request because 'parse_request' is not triggered
add_action('rest_api_init', array($this, 'add_links_translation_filters'));
// login
add_filter('login_url', array($this, 'translate_login_url'));
add_filter('lostpassword_url', array($this, 'translate_login_url'));
add_filter('logout_url', array($this, 'translate_login_url'));
add_filter('register_url', array($this, 'translate_login_url'));
add_action('login_form', array($this, 'translate_login_form'));
add_action('lostpassword_form', array($this, 'translate_login_form'));
add_action('resetpass_form', array($this, 'translate_login_form'));
add_action('register_form', array($this, 'translate_login_form'));
add_filter('retrieve_password_message', array($this, 'translate_retrieve_password_message'));
add_filter('lostpassword_redirect', array($this, 'lostpassword_redirect'));
add_filter('registration_redirect', array($this, 'registration_redirect'));
// print hreflang in template head
add_action('wp_head', array($this, 'print_hreflang')); // -> added in 1.4.5
// API
add_action('sublanguage_print_language_switch', array($this, 'print_language_switch'));
add_filter('sublanguage_custom_translate', array($this, 'custom_translate'), 10, 3);
/**
* Hook called after initializing most hooks and filters
*
* @from 1.2
*
* @param Sublanguage_site object
*/
do_action('sublanguage_init', $this);
}
/**
* Override set_language for compat
*
* @from 2.0
*
* @param object WP_post $language Language. Optional
*/
public function set_language($language = null) {
Sublanguage_core::set_language($language);
$this->current_language = $this->get_language();
}
/**
* Custom translation. Sublanguage API
*
* Filter for 'sublanguage_custom_translate'
*
* @from 1.0
*/
public function custom_translate($content, $callback, $args = null) {
if ($this->has_language()) {
return call_user_func($callback, $content, $this->get_language(), $this, $args);
}
return $content;
}
/**
* Request current language
*
* Override Sublanguage_core::request_language()
*
* @from 2.0
*
* @return object WP_post
*/
public function request_language() {
if (isset($_REQUEST[$this->language_query_var])) {
$language = $this->get_language_by($_REQUEST[$this->language_query_var], 'post_name');
} else if (isset($_SERVER['REQUEST_URI'])) {
if (preg_match('/\/('.implode('|', $this->get_language_column('post_name')).')(\/|$|\?|#)/', $_SERVER['REQUEST_URI'], $matches)) { // -> language detected!
$language = $this->get_language_by($matches[1], 'post_name');
if ($this->is_default($language) && !$this->get_option('show_slug')) {
$this->canonical = false;
}
} else {
if ($this->get_option('show_slug')) {
$this->canonical = false;
}
if ($this->get_option('autodetect')) { // auto detect language on home page
// detect only on home page? --> rtrim($_SERVER['SCRIPT_URI'], '/') == rtrim(home_url())
$detected_language = $this->auto_detect_language();
if ($detected_language) {
$language = $detected_language;
}
}
}
}
if (empty($language)) {
$language = $this->get_default_language();
}
if ($language && get_post_meta($language->ID, 'rtl', true)) {
$GLOBALS['text_direction'] = 'rtl';
}
return $language;
}
/**
* Filter for 'locale'
*
* @from 1.0
*/
public function get_locale($locale) {
if ($language = $this->get_language()) {
return $language->post_content;
}
return $locale;
}
/**
* Translate menu nav items
* Filter for 'wp_setup_nav_menu_item'
*/
public function translate_menu_nav_item($menu_item) {
if ($menu_item->type == 'post_type') {
if ($this->is_post_type_translatable($menu_item->object)) {
$original_post = get_post($menu_item->object_id);
$menu_item = $this->translate_nav_menu_item($menu_item);
if (empty($menu_item->post_title)) {
$menu_item->title = $this->translate_post_field($original_post, 'post_title', null, $menu_item->title);
} else {
$menu_item->title = $menu_item->post_title;
}
$menu_item->url = get_permalink($original_post);
}
} else if ($menu_item->type == 'taxonomy') {
if ($this->is_taxonomy_translatable($menu_item->object)) {
$original_term = get_term($menu_item->object_id, $menu_item->object);
if ($original_term && !is_wp_error($original_term)) {
$menu_item = $this->translate_nav_menu_item($menu_item);
if (empty($menu_item->post_title)) {
$menu_item->title = $this->translate_term_field($original_term, $original_term->taxonomy, 'name', null, $menu_item->title);
} else {
$menu_item->title = $menu_item->post_title;
}
// url already filtered
}
}
} else if ($menu_item->type == 'custom') {
if ($menu_item->title == 'language') {
static $languages, $language_index;
if (!isset($languages)) {
$languages = $this->get_sorted_languages();
}
if (!isset($language_index) || $language_index >= count($languages)) {
$language_index = 0;
}
$language = $languages[$language_index];
/**
* Filter language name
*
* @from 1.2
*
* @param WP_post object
*/
$menu_item->title = apply_filters('sublanguage_language_name', $language->post_title, $language);
$menu_item->url = $this->get_translation_link($language);
$menu_item->classes[] = $this->is_current($language) ? 'active_language' : 'inactive_language';
$menu_item->classes[] = 'sublanguage';
$menu_item->classes[] = $language->post_name;
$language_index++;
}
$menu_item = $this->translate_nav_menu_item($menu_item, true);
}
return $menu_item;
}
/**
* Translate a nav menu item
*
* @param object WP_Post $menu_item
* @return object WP_Post
*
* @from 1.5
*/
public function translate_nav_menu_item($menu_item, $fill_default_title = false) {
if ($this->is_sub() && $this->is_post_type_translatable('nav_menu_item')) {
$menu_item->post_title = $this->translate_post_field($menu_item, 'post_title', null, ($fill_default_title ? $menu_item->title : ''));
$menu_item->description = $this->translate_post_field($menu_item, 'post_content', null, $menu_item->description);
$menu_item->attr_title = $this->translate_post_field($menu_item, 'post_excerpt', null, $menu_item->attr_title);
}
return $menu_item;
}
/**
* Remove items that need to be hidden in current language
*
* Filter for 'wp_nav_menu_objects'
*
* @from 1.5
*/
public function filter_nav_menu_objects($sorted_menu_items, $args) {
if ($this->is_post_type_translatable('nav_menu_item') && in_array('sublanguage_hide', $this->get_post_type_metakeys('nav_menu_item'))) {
$filtered_items = array();
foreach ($sorted_menu_items as $menu_item) {
if ($this->is_sub() && !get_post_meta($menu_item->ID, $this->get_prefix().'sublanguage_hide', true) || $this->is_main() && !get_post_meta($menu_item->ID, 'sublanguage_hide', true)) {
$filtered_items[] = $menu_item;
}
}
return $filtered_items;
}
return $sorted_menu_items;
}
/**
* Print language switch
*
* hook for 'sublanguage_print_language_switch'
*
* @from 1.0
*/
public function print_language_switch($context = null) {
$languages = $this->get_sorted_languages();
if (has_action('sublanguage_custom_switch')) {
/**
* Customize language switch output
*
* @from 1.2
*
* @param array of WP_Post language custom post
* @param Sublanguage_site $this The Sublanguage instance.
* @param mixed context
*/
do_action_ref_array('sublanguage_custom_switch', array($languages, $this, $context));
} else {
$output = '<ul>';
foreach ($languages as $language) {
/**
* Filter language name
*
* @from 1.2
*
* @param string language name
* @param WP_Post language custom post
*/
$output .= sprintf('<li class="%s%s"><a href="%s">%s</a></li>',
$language->post_name,
($this->is_current($language) ? ' current' : ''),
$this->get_translation_link($language),
apply_filters('sublanguage_language_name', $language->post_title, $language)
);
}
$output .= '</ul>';
echo $output;
}
}
/**
* Register sublanguage specific query_vars
*
* @filter 'query_vars'
*
* @from 1.0
*/
public function query_vars($public_query_vars) {
$public_query_vars[] = 'sublanguage_slug';
$public_query_vars[] = 'sublanguage_page';
$public_query_vars[] = 'preview_language';
return $public_query_vars;
}
/**
* Intercept query_vars to find out type of query and get parent.
* Must return an array of query vars
*
* Hook for 'request'
*
* @from 1.0
*/
public function catch_translation($query_vars) {
global $wp_rewrite;
if (isset($query_vars['sublanguage_page']) || isset($query_vars['pagename']) || isset($query_vars['name'])) { // -> page, post or custom post type
$name = '';
if (isset($query_vars['sublanguage_page'])) {
$name = $query_vars['sublanguage_page'];
} else if (isset($query_vars['pagename'])) {
$name = $query_vars['pagename'];
} else if (isset($query_vars['name'])) {
$name = $query_vars['name'];
}
$ancestors = explode('/', $name);
// -> remove the permalink structure prefix if there is one
if (isset($query_vars['sublanguage_page']) && !empty($wp_rewrite->front) && $wp_rewrite->front !== '/' && trim($wp_rewrite->front, '/') === $ancestors[0]) {
array_shift($ancestors);
}
$post_name = array_pop($ancestors);
$post_types = isset($query_vars['post_type']) ? array($query_vars['post_type']) : array('page', 'post');
$post = $this->query_post($post_name, array(
'post_types' => $post_types,
'ancestor_names' => $ancestors
));
if ($post) {
$post_type_obj = get_post_type_object($post->post_type);
if (isset($query_vars['sublanguage_slug']) && $query_vars['sublanguage_slug'] !== $this->translate_cpt($post->post_type, null, $post->post_type)) {
// wrong slug
$this->canonical = false;
}
if ($post_type_obj->hierarchical) {
$path = '';
$parent_id = $post->post_parent;
while ($parent_id) {
$parent = get_post($parent_id);
$path = $parent->post_name . '/' . $path;
$parent_id = $parent->post_parent;
}
if (isset($query_vars[$post->post_type]) && $post->post_type !== 'page') { // -> unexpected results when post-type is page. Fixed in 2.7.1
$query_vars[$post->post_type] = $path . $post->post_name;
}
if (isset($query_vars['name'])) {
$query_vars['name'] = $path . $post->post_name;
} else {
$query_vars['pagename'] = $path . $post->post_name;
}
} else {
if (isset($query_vars['pagename'])) {
$query_vars['pagename'] = $post->post_name;
} else {
$query_vars['name'] = $post->post_name;
}
if (isset($query_vars[$post->post_type]) && $post->post_type !== 'page') { // -> unexpected results when post-type is page. Fixed in 2.7.1
$query_vars[$post->post_type] = $post->post_name;
}
}
} else if (isset($query_vars['sublanguage_page'])) { // -> nothing found. Let's pretend we did not see
$query_vars['name'] = $query_vars['sublanguage_page'];
}
} else if (isset($query_vars['attachment']) && $this->is_post_type_translatable('attachment')) { // -> attachment (this is a child of a "post" post-type)
$post = $this->query_post($query_vars['attachment'], array(
'post_types' => array('attachment')
));
if ($post) {
$query_vars['attachment'] = $post->post_name;
}
} else if (isset($query_vars['post_type'])) { // -> custom-post-type archive
$post_type = $query_vars['post_type'];
if ($this->is_post_type_translatable($post_type)) {
if (isset($query_vars['sublanguage_slug']) && $query_vars['sublanguage_slug'] !== $this->translate_cpt_archive($post_type, null)) {
// wrong slug
$this->canonical = false;
}
}
} else if ($results = array_filter(array_map(array($this, 'query_var_to_taxonomy'), array_keys($query_vars)), array($this, 'is_taxonomy_translatable'))) { // -> untranslated taxonomy
if (isset($query_vars['sublanguage_slug'])) {
$taxonomy = '';
foreach ($results as $r) {
$taxonomy = $r;
break;
}
if (!$taxonomy) throw new Exception('Taxonomy not found!');
$tax_obj = get_taxonomy($taxonomy);
$tax_qv = $tax_obj->query_var;
$term_name = $query_vars[$tax_qv];
$term = $this->query_taxonomy($term_name, $taxonomy);
if ($term) {
$query_vars[$tax_qv] = $term->slug; // -> restore original language name in query_var
$tax_translation = $this->translate_taxonomy($taxonomy, null, $taxonomy);
if ($this->translate_taxonomy($taxonomy, null, $taxonomy) !== $query_vars['sublanguage_slug']) { // taxonomy should be translated
$this->canonical = false;
}
}
}
}
if (isset($query_vars['preview'])) {
$this->canonical = true;
}
return $query_vars;
}
/**
* Add links translation filters after all query variables for the current request have been parsed.
*
* @hook 'parse_request'
* @from 2.0
*/
public function add_links_translation_filters($wp = null) {
add_filter('home_url', array($this,'translate_home_url'), 10, 4);
add_filter('pre_post_link', array($this, 'pre_translate_permalink'), 10, 3);
add_filter('post_link', array($this, 'translate_permalink'), 10, 3);
add_filter('page_link', array($this, 'translate_page_link'), 10, 3);
add_filter('post_type_link', array($this, 'translate_custom_post_link'), 10, 3);
add_filter('attachment_link', array($this, 'translate_attachment_link'), 10, 2);
add_filter('post_link_category', array($this, 'translate_post_link_category'), 10, 3); // not implemented yet
add_filter('post_type_archive_link', array($this, 'translate_post_type_archive_link'), 10, 2);
add_filter('year_link', array($this,'translate_month_link'));
add_filter('month_link', array($this,'translate_month_link'));
add_filter('day_link', array($this,'translate_month_link'));
add_filter('term_link', array($this, 'translate_term_link'), 10, 3);
add_filter('get_edit_post_link', array($this, 'translate_edit_post_link'), 10, 3);
}
/**
* Redirection when not canoncal url
* Must be fired after filters.
* Must be fired after conditional tags are set.
*
* @from 1.0
*/
public function redirect_uncanonical() {
$query_object = get_queried_object();
if (!$this->canonical) {
if (is_singular()) {
$url = get_permalink($query_object->ID);
} else if (is_post_type_archive()) {
$url = get_post_type_archive_link($query_object->name);
} else if (is_category() || is_tag() || is_tax()) {
$url = get_term_link($query_object->term_id, $query_object->taxonomy);
} else {
$url = home_url();
}
wp_redirect($url);
exit;
}
}
/**
* Find original post based on query vars info.
*
* @from 1.0
* @from 2.5 adds arguments
*
* @param string $post_name
* @param array $args {
* Array of arguments
* @type array $post_types Array of post_type strings
* @type array $ancestor_names Array of ancestor post_names
* @type array $exclude_ids Array of post ids
* }
* @return WP_Post object $post. Queried post or null
*/
public function query_post($post_name, $args = array()) {
global $wpdb;
$post_name = esc_sql($post_name);
if (isset($args['post_types']) && is_array($args['post_types']) && $args['post_types']) {
$post_type_sql = $wpdb->prepare(implode(',', array_fill(0, count($args['post_types']), '%s')), $args['post_types']);
}
if ($this->is_sub()) {
$post_ids = array_map('intval', $wpdb->get_col( $wpdb->prepare(
"SELECT post_id FROM $wpdb->postmeta WHERE meta_key = %s AND meta_value = %s",
$this->get_prefix().'post_name',
$post_name
)));
if (isset($args['exclude_ids']) && $post_ids) {
$exclude_ids = array_map('intval', $args['exclude_ids']);
$post_ids = array_diff($post_ids, $exclude_ids);
}
}
if (isset($post_ids) && $post_ids) {
$post_ids_sql = $wpdb->prepare(implode(',', array_fill(0, count($post_ids), '%d')), $post_ids);
$wheres = array();
$wheres[] = 'post.ID IN (' . $post_ids_sql . ')';
if (isset($post_type_sql)) {
$wheres[] = 'post.post_type IN (' . $post_type_sql . ')';
}
$posts = $wpdb->get_results(
"SELECT post.* FROM $wpdb->posts AS post
WHERE ".implode(" AND ", $wheres)
);
foreach ($posts as $post) { // -> Translations found
if (isset($args['ancestor_names']) && $args['ancestor_names']) { // -> verify ancestors recursively
$query_args = $args;
$query_args['exclude_ids'][] = $post->ID; // -> exclude this post to prevent a loop hole (multiple pages can share the same slug if parented differently)
$parent_name = array_pop($query_args['ancestor_names']);
$parent = $this->query_post($parent_name, $query_args);
if ($parent && $post->post_parent == $parent->ID) {
return $post;
}
} else if (!$post->post_parent) {
// This one will just do
return $post;
}
}
}
// no translation -> search untranslated posts with this name
$wheres = array();
$wheres[] = $wpdb->prepare('post.post_name = %s', $post_name);
if (isset($post_type_sql)) {
$wheres[] = 'post.post_type IN (' . $post_type_sql . ')';
}
if (isset($args['exclude_ids'])) {
$exclude_ids = array_map('intval', $args['exclude_ids']);
$exclude_sql = $wpdb->prepare(implode(',', array_fill(0, count($exclude_ids), '%d')), $exclude_ids);
$wheres[] = 'post.ID NOT IN ('.$exclude_sql.')';
}
$posts = $wpdb->get_results(
"SELECT post.* FROM $wpdb->posts AS post
WHERE ".implode(' AND ', $wheres)
);
if ($posts) {
foreach ($posts as $post) {
if (isset($args['ancestor_names']) && $args['ancestor_names']) { // -> verify ancestors recursively
$query_args = $args;
$query_args['exclude_ids'][] = $post->ID; // -> exclude this post to prevent a loop hole (multiple pages can share the same slug if parented differently)
$parent_name = array_pop($query_args['ancestor_names']);
$parent = $this->query_post($parent_name, $query_args);
// check if parent match and there is no specific translation...
if ($parent && $post->post_parent == $parent->ID) {
// Post found
if ($this->is_sub() && $this->is_post_type_translatable($post->post_type) && get_post_meta($post->ID, $this->get_prefix() . 'post_name', true)) {
// But there is a specific translation for this post
$this->canonical = false;
}
return $post;
}
} else if (!$post->post_parent) {
// Post found
if ($this->is_sub() && $this->is_post_type_translatable($post->post_type) && get_post_meta($post->ID, $this->get_prefix() . 'post_name', true)) {
// But there is a specific translation for this post
$this->canonical = false;
}
return $post;
}
}
}
// Nothing found. -> Search in other languages...
$post_names = array();
foreach ($this->get_languages() as $language) {
if ($this->is_sub($language)) {
$post_names[] = esc_sql($this->get_prefix($language).'post_name');
}
}
if ($post_names) {
$post_names_sql = $wpdb->prepare(implode(',', array_fill(0, count($post_names), '%s')), $post_names);
$wheres = array();
$wheres[] = 'meta.meta_key IN ('.$post_names_sql.')';
$wheres[] = $wpdb->prepare('meta.meta_value = %s', $post_name);
if (isset($post_type_sql)) {
$wheres[] = 'post.post_type IN (' . $post_type_sql . ')';
}
$posts = $wpdb->get_results(
"SELECT post.* FROM $wpdb->posts AS post
INNER JOIN $wpdb->postmeta AS meta ON (post.ID = meta.post_id)
WHERE ".implode(' AND ', $wheres)
);
foreach ($posts as $post) { // -> Translations found
if (isset($args['ancestor_names']) && $args['ancestor_names']) { // -> verify ancestors recursively
$query_args = $args;
$query_args['exclude_ids'][] = $post->ID; // -> exclude this post to prevent a loop hole (multiple pages can share the same slug if parented differently)
$parent_name = array_pop($query_args['ancestor_names']);
$parent = $this->query_post($parent_name, $query_args);
if ($parent && $post->post_parent == $parent->ID) {
$this->canonical = false;
return $post;
}
} else if (!$post->post_parent) {
$this->canonical = false;
// This one will just do
return $post;
}
}
}
}
/**
* Find original term based on query vars info.
*
* @from 1.0
*
* @param string $slug
* @param string|array $taxonomy
*/
public function query_taxonomy($slug, $taxonomies) {
global $wpdb;
$taxonomy_string = is_array($taxonomies) ? "'".implode("','", esc_sql($taxonomies))."'" : "'".esc_sql($taxonomies)."'";
$translation_slug = $this->get_prefix() . 'slug';
$term_ids = $wpdb->get_col( $wpdb->prepare(
"SELECT term_id FROM $wpdb->termmeta WHERE meta_key = %s AND meta_value = %s",
$translation_slug,
$slug
));
if ($term_ids) {
// Translations found but we're not sure about taxonomy
$term = $wpdb->get_row(
"SELECT t.term_id, t.slug, tt.taxonomy, tt.parent FROM $wpdb->terms AS t
INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id
WHERE tt.taxonomy IN ($taxonomy_string)
AND t.term_id IN (".implode(",", array_map('intval', $term_ids)).")"
);
return $term;
// $terms = get_terms(array(
// 'taxonomy' => $taxonomies,
// 'hide_empty' => false,
// 'include' => $term_ids,
// 'language' => false
// ));
}
// -> no translated term for this slug
$term = $wpdb->get_row( $wpdb->prepare(
"SELECT t.term_id, t.slug, tt.taxonomy, tt.parent FROM $wpdb->terms AS t
INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id
WHERE tt.taxonomy IN ($taxonomy_string)
AND t.slug = %s",
$slug
));
// $terms = get_terms(array(
// 'taxonomy' => $taxonomies,
// 'hide_empty' => false,
// 'slug' => $slug,
// 'language' => false
// ));
if ($term) {
if ($this->is_taxonomy_translatable($term->taxonomy) && get_term_meta($term->term_id, $this->get_prefix() . 'slug', true)) {
// -> But there is a specific translation for this term
$this->canonical = false;
}
return $term;
} else {