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<?php
/**
* Manages filters and actions related to posts on admin side
*
* @since 1.2
*/
class PLL_Admin_Filters_Post extends PLL_Admin_Filters_Post_Base {
public $options, $curlang;
/**
* Constructor: setups filters and actions
*
* @since 1.2
*
* @param object $polylang
*/
public function __construct( &$polylang ) {
parent::__construct( $polylang );
$this->options = &$polylang->options;
$this->curlang = &$polylang->curlang;
add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_scripts' ) );
// Filters posts, pages and media by language
add_action( 'parse_query', array( $this, 'parse_query' ) );
// Adds the Languages box in the 'Edit Post' and 'Edit Page' panels
add_action( 'add_meta_boxes', array( $this, 'add_meta_boxes' ), 10, 2 );
// Ajax response for changing the language in the post metabox
add_action( 'wp_ajax_post_lang_choice', array( $this, 'post_lang_choice' ) );
add_action( 'wp_ajax_pll_posts_not_translated', array( $this, 'ajax_posts_not_translated' ) );
// Adds actions and filters related to languages when creating, saving or deleting posts and pages
add_action( 'save_post', array( $this, 'save_post' ), 21, 3 ); // Priority 21 to come after advanced custom fields ( 20 ) and before the event calendar which breaks everything after 25
add_filter( 'wp_insert_post_parent', array( $this, 'wp_insert_post_parent' ), 10, 4 );
add_action( 'before_delete_post', array( $this, 'delete_post' ) );
if ( $this->options['media_support'] ) {
add_action( 'delete_attachment', array( $this, 'delete_post' ) ); // Action shared with media
}
// Filters the pages by language in the parent dropdown list in the page attributes metabox
add_filter( 'page_attributes_dropdown_pages_args', array( $this, 'page_attributes_dropdown_pages_args' ), 10, 2 );
}
/**
* Outputs a javascript list of terms ordered by language and hierarchical taxonomies
* to filter the category checklist per post language in quick edit
* Outputs a javascript list of pages ordered by language
* to filter the parent dropdown per post language in quick edit
*
* @since 1.7
*/
public function admin_enqueue_scripts() {
$screen = get_current_screen();
// Hierarchical taxonomies
if ( 'edit' == $screen->base && $taxonomies = get_object_taxonomies( $screen->post_type, 'object' ) ) {
// Get translated hierarchical taxonomies
foreach ( $taxonomies as $taxonomy ) {
if ( $taxonomy->hierarchical && $taxonomy->show_in_quick_edit && $this->model->is_translated_taxonomy( $taxonomy->name ) ) {
$hierarchical_taxonomies[] = $taxonomy->name;
}
}
if ( ! empty( $hierarchical_taxonomies ) ) {
$terms = get_terms( $hierarchical_taxonomies, array( 'get' => 'all' ) );
foreach ( $terms as $term ) {
if ( $lang = $this->model->term->get_language( $term->term_id ) ) {
$term_languages[ $lang->slug ][ $term->taxonomy ][] = $term->term_id;
}
}
// Send all these data to javascript
if ( ! empty( $term_languages ) ) {
wp_localize_script( 'pll_post', 'pll_term_languages', $term_languages );
}
}
}
// Hierarchical post types
if ( 'edit' == $screen->base && is_post_type_hierarchical( $screen->post_type ) ) {
$pages = get_pages();
foreach ( $pages as $page ) {
if ( $lang = $this->model->post->get_language( $page->ID ) ) {
$page_languages[ $lang->slug ][] = $page->ID;
}
}
// Send all these data to javascript
if ( ! empty( $page_languages ) ) {
wp_localize_script( 'pll_post', 'pll_page_languages', $page_languages );
}
}
}
/**
* Filters posts, pages and media by language
*
* @since 0.1
*
* @param object $query a WP_Query object
*/
public function parse_query( $query ) {
$qvars = &$query->query_vars;
// Do not filter post types such as nav_menu_item
if ( isset( $qvars['post_type'] ) && ! $this->model->is_translated_post_type( $qvars['post_type'] ) ) {
unset( $qvars['lang'] );
return;
}
// Do not filter the query if the language is already specified in another way
if ( ! isset( $qvars['lang'] ) ) {
$excludes = array(
'p',
'post_parent',
'attachment',
'attachment_id',
'name',
'pagename',
'page_id',
'category_name',
'tag',
'cat',
'tag_id',
'category__in',
'category__and',
'post__in',
'post_name__in',
'tag__in',
'tag__and',
'tag_slug__in',
'tag_slug__and',
'post_parent__in',
);
foreach ( $excludes as $k ) {
if ( ! empty( $qvars[ $k ] ) ) {
return;
}
}
$taxonomies = array_intersect( $this->model->get_translated_taxonomies(), get_taxonomies( array( '_builtin' => false ) ) );
foreach ( $taxonomies as $tax ) {
$tax = get_taxonomy( $tax );
if ( ! empty( $qv[ $tax->query_var ] ) ) {
return;
}
}
if ( ! empty( $qvars['tax_query'] ) && is_array( $qvars['tax_query'] ) && $this->model->have_translated_taxonomy( $qvars['tax_query'] ) ) {
return;
}
// Filter queries according to the current language
if ( isset( $qvars['post_type'] ) && ! empty( $this->curlang ) ) {
$qvars['lang'] = $this->curlang->slug;
}
}
if ( isset( $qvars['lang'] ) && 'all' === $qvars['lang'] ) {
unset( $qvars['lang'] );
}
}
/**
* Adds the Language box in the 'Edit Post' and 'Edit Page' panels ( as well as in custom post types panels )
* Removes the editor for translations of the pages for posts
*
* @since 0.1
*
* @param string $post_type
*/
public function add_meta_boxes( $post_type, $post ) {
if ( $this->model->is_translated_post_type( $post_type ) ) {
add_meta_box( 'ml_box', __( 'Languages','polylang' ), array( $this, 'post_language' ), $post_type, 'side', 'high' );
}
if ( ( $page_for_posts = get_option( 'page_for_posts' ) ) && ( $translations = $this->model->post->get_translations( $page_for_posts ) ) && in_array( $post->ID, $translations ) && empty( $post->post_content ) ) {
add_action( 'edit_form_after_title', '_wp_posts_page_notice' );
remove_post_type_support( $post_type, 'editor' );
}
}
/**
* Displays the Languages metabox in the 'Edit Post' and 'Edit Page' panels
*
* @since 0.1
*/
public function post_language() {
global $post_ID;
$post_id = $post_ID;
$post_type = get_post_type( $post_ID );
$lang = ( $lg = $this->model->post->get_language( $post_ID ) ) ? $lg :
( isset( $_GET['new_lang'] ) ? $this->model->get_language( $_GET['new_lang'] ) :
$this->pref_lang );
$dropdown = new PLL_Walker_Dropdown();
wp_nonce_field( 'pll_language', '_pll_nonce' );
// NOTE: the class "tags-input" allows to include the field in the autosave $_POST ( see autosave.js )
printf( '
<p><strong>%1$s</strong></p>
<label class="screen-reader-text" for="%2$s">%1$s</label>
<div id="select-%3$s-language">%4$s</div>',
esc_html__( 'Language', 'polylang' ),
$id = ( 'attachment' === $post_type ) ? sprintf( 'attachments[%d][language]', $post_ID ) : 'post_lang_choice',
'attachment' === $post_type ? 'media' : 'post',
$dropdown->walk( $this->model->get_languages_list(), array(
'name' => $id,
'class' => 'post_lang_choice tags-input',
'selected' => $lang ? $lang->slug : '',
'flag' => true,
) )
);
/**
* Fires before displaying the list of translations in the Languages metabox for posts
*
* @since 1.8
*/
do_action( 'pll_before_post_translations', $post_type );
echo '<div id="post-translations" class="translations">';
if ( $lang ) {
include PLL_ADMIN_INC . '/view-translations-' . ( 'attachment' == $post_type ? 'media' : 'post' ) . '.php';
}
echo '</div>' . "\n";
}
/**
* Ajax response for changing the language in the post metabox
*
* @since 0.2
*/
public function post_lang_choice() {
check_ajax_referer( 'pll_language', '_pll_nonce' );
global $post_ID; // Obliged to use the global variable for wp_popular_terms_checklist
$post_id = $post_ID = (int) $_POST['post_id'];
$lang = $this->model->get_language( $_POST['lang'] );
$post_type = $_POST['post_type'];
$post_type_object = get_post_type_object( $post_type );
if ( ! current_user_can( $post_type_object->cap->edit_post, $post_ID ) ) {
wp_die( -1 );
}
$this->model->post->set_language( $post_ID, $lang ); // Save language, useful to set the language when uploading media from post
ob_start();
if ( $lang ) {
include PLL_ADMIN_INC . '/view-translations-' . ( 'attachment' == $post_type ? 'media' : 'post' ) . '.php';
}
$x = new WP_Ajax_Response( array( 'what' => 'translations', 'data' => ob_get_contents() ) );
ob_end_clean();
// Categories
if ( isset( $_POST['taxonomies'] ) ) {
// Not set for pages
foreach ( $_POST['taxonomies'] as $taxname ) {
$taxonomy = get_taxonomy( $taxname );
ob_start();
$popular_ids = wp_popular_terms_checklist( $taxonomy->name );
$supplemental['populars'] = ob_get_contents();
ob_end_clean();
ob_start();
// Use $post_ID to remember ckecked terms in case we come back to the original language
wp_terms_checklist( $post_ID, array( 'taxonomy' => $taxonomy->name, 'popular_cats' => $popular_ids ) );
$supplemental['all'] = ob_get_contents();
ob_end_clean();
$supplemental['dropdown'] = wp_dropdown_categories( array(
'taxonomy' => $taxonomy->name,
'hide_empty' => 0,
'name' => 'new'.$taxonomy->name.'_parent',
'orderby' => 'name',
'hierarchical' => 1,
'show_option_none' => '— '.$taxonomy->labels->parent_item.' —',
'echo' => 0,
) );
$x->Add( array( 'what' => 'taxonomy', 'data' => $taxonomy->name, 'supplemental' => $supplemental ) );
}
}
// Parent dropdown list ( only for hierarchical post types )
if ( in_array( $post_type, get_post_types( array( 'hierarchical' => true ) ) ) ) {
$post = get_post( $post_ID );
// Args and filter from 'page_attributes_meta_box' in wp-admin/includes/meta-boxes.php of WP 4.2.1
$dropdown_args = array(
'post_type' => $post->post_type,
'exclude_tree' => $post->ID,
'selected' => $post->post_parent,
'name' => 'parent_id',
'show_option_none' => __( '(no parent)' ),
'sort_column' => 'menu_order, post_title',
'echo' => 0,
);
/** This filter is documented in wp-admin/includes/meta-boxes.php */
$dropdown_args = apply_filters( 'page_attributes_dropdown_pages_args', $dropdown_args, $post ); // Since WP 3.3
$x->Add( array( 'what' => 'pages', 'data' => wp_dropdown_pages( $dropdown_args ) ) );
}
// Flag
$x->Add( array( 'what' => 'flag', 'data' => empty( $lang->flag ) ? esc_html( $lang->slug ) : $lang->flag ) );
// Sample permalink
$x->Add( array( 'what' => 'permalink', 'data' => get_sample_permalink_html( $post_ID ) ) );
$x->send();
}
/**
* Ajax response for input in translation autocomplete input box
*
* @since 1.5
*/
public function ajax_posts_not_translated() {
check_ajax_referer( 'pll_language', '_pll_nonce' );
if ( ! post_type_exists( $_GET['post_type'] ) ) {
die( 0 );
}
$post_language = $this->model->get_language( $_GET['post_language'] );
$translation_language = $this->model->get_language( $_GET['translation_language'] );
// Don't order by title: see https://wordpress.org/support/topic/find-translated-post-when-10-is-not-enough
$args = array(
's' => wp_unslash( $_GET['term'] ),
'suppress_filters' => 0, // To make the post_fields filter work
'lang' => 0, // Avoid admin language filter
'numberposts' => 20, // Limit to 20 posts
'post_status' => 'any',
'post_type' => $_GET['post_type'],
'tax_query' => array( array(
'taxonomy' => 'language',
'field' => 'term_taxonomy_id', // WP 3.5+
'terms' => $translation_language->term_taxonomy_id,
) ),
);
/**
* Filter the query args when auto suggesting untranslated posts in the Languages metabox
* This should help plugins to fix some edge cases
*
* @see https://wordpress.org/support/topic/find-translated-post-when-10-is-not-enough
*
* @since 1.7
*
* @param array $args WP_Query arguments
*/
$args = apply_filters( 'pll_ajax_posts_not_translated_args', $args );
$posts = get_posts( $args );
$return = array();
foreach ( $posts as $key => $post ) {
if ( ! $this->model->post->get_translation( $post->ID, $post_language ) ) {
$return[] = array(
'id' => $post->ID,
'value' => $post->post_title,
'link' => $this->links->edit_post_translation_link( $post->ID ),
);
}
}
// Add current translation in list
if ( $post_id = $this->model->post->get_translation( (int) $_GET['pll_post_id'], $translation_language ) ) {
$post = get_post( $post_id );
array_unshift( $return, array(
'id' => $post_id,
'value' => $post->post_title,
'link' => $this->links->edit_post_translation_link( $post_id ),
) );
}
wp_die( json_encode( $return ) );
}
/**
* Saves language
* Checks the terms saved are in the right language
*
* @since 1.5
*
* @param int $post_id
* @param array $post
*/
protected function save_language( $post_id, $post ) {
// Security checks are necessary to accept language modifications as 'wp_insert_post' can be called from outside WP admin
// Edit post
if ( isset( $_POST['post_lang_choice'], $_POST['post_ID'] ) && $_POST['post_ID'] == $post_id ) {
check_admin_referer( 'pll_language', '_pll_nonce' );
$this->model->post->set_language( $post_id, $lang = $this->model->get_language( $_POST['post_lang_choice'] ) );
}
// Quick edit and bulk edit
// POST for quick edit, GET for bulk edit
elseif ( isset( $_REQUEST['inline_lang_choice'] ) ) {
// Bulk edit does not modify the language
if ( isset( $_GET['bulk_edit'] ) && -1 == $_REQUEST['inline_lang_choice'] ) {
check_admin_referer( 'bulk-posts' );
$lang = $this->model->post->get_language( $post_id ); // Get the post language for later use when saving terms
}
// A language is set in the language dropdown
else {
isset( $_GET['bulk_edit'] ) ? check_admin_referer( 'bulk-posts' ) : check_admin_referer( 'inlineeditnonce', '_inline_edit' );
$old_lang = $this->model->post->get_language( $post_id ); // Stores the old language
$this->model->post->set_language( $post_id, $lang = $this->model->get_language( $_REQUEST['inline_lang_choice'] ) ); // set new language
// Checks if the new language already exists in the translation group
if ( $old_lang && $old_lang->slug != $lang->slug ) {
$translations = $this->model->post->get_translations( $post_id );
// If yes, separate this post from the translation group
if ( array_key_exists( $lang->slug, $translations ) ) {
$this->model->post->delete_translation( $post_id );
}
elseif ( array_key_exists( $old_lang->slug, $translations ) ) {
unset( $translations[ $old_lang->slug ] );
$this->model->post->save_translations( $post_id, $translations );
}
}
}
}
// Quick press
// 'post-quickpress-save', 'post-quickpress-publish' = backward compatibility WP < 3.8
elseif ( isset( $_REQUEST['action'] ) && in_array( $_REQUEST['action'], array( 'post-quickpress-save', 'post-quickpress-publish', 'post-quickdraft-save' ) ) ) {
check_admin_referer( 'add-' . $post->post_type );
$this->model->post->set_language( $post_id, $lang = $this->pref_lang ); // Default language for Quick draft
}
else {
$this->set_default_language( $post_id );
}
// Make sure we get save terms in the right language (especially tags with same name in different languages)
if ( ! empty( $lang ) ) {
// FIXME quite a lot of queries in foreach
foreach ( $this->model->get_translated_taxonomies() as $tax ) {
$terms = get_the_terms( $post_id, $tax );
if ( is_array( $terms ) ) {
$newterms = array();
foreach ( $terms as $term ) {
// Check if the term is in the correct language or if a translation exist ( mainly for default category )
if ( $newterm = $this->model->term->get( $term->term_id, $lang ) ) {
$newterms[] = (int) $newterm;
}
// Or choose the correct language for tags ( initially defined by name )
elseif ( $newterm = $this->model->term_exists( $term->name, $tax, $term->parent, $lang ) ) {
$newterms[] = (int) $newterm; // Cast is important otherwise we get 'numeric' tags
}
// Or create the term in the correct language
elseif ( ! is_wp_error( $term_info = wp_insert_term( $term->name, $tax ) ) ) {
$newterms[] = (int) $term_info['term_id'];
}
}
wp_set_object_terms( $post_id, $newterms, $tax );
}
}
}
}
/**
* Called when a post ( or page ) is saved, published or updated
* saves languages and translations
*
* @since 0.1
*
* @param int $post_id
* @param object $post
* @param bool $update Whether it is an update or not
*/
public function save_post( $post_id, $post, $update ) {
// Does nothing except on post types which are filterable
if ( ! $this->model->is_translated_post_type( $post->post_type ) ) {
return;
}
if ( $id = wp_is_post_revision( $post_id ) ) {
$post_id = $id;
}
// Capability check
// As 'wp_insert_post' can be called from outside WP admin
$post_type_object = get_post_type_object( $post->post_type );
if ( ( $update && current_user_can( $post_type_object->cap->edit_post, $post_id ) ) || ( ! $update && current_user_can( $post_type_object->cap->create_posts ) ) ) {
$this->save_language( $post_id, $post );
// Make sure we are saving translations only for the main post currently being edited
if ( isset( $_POST['post_tr_lang'], $_POST['post_ID'] ) && $_POST['post_ID'] == $post_id ) {
$translations = $this->save_translations( $post_id, $_POST['post_tr_lang'] );
}
/**
* Fires after the post language and translations are saved
*
* @since 1.2
*
* @param int $post_id Post id
* @param object $post Post object
* @param array $translations The list of translations post ids
*/
do_action( 'pll_save_post', $post_id, $post, empty( $translations ) ? $this->model->post->get_translations( $post_id ) : $translations );
}
// Attempts to set a default language even if no capability
else {
$this->set_default_language( $post_id );
}
}
/**
* Make sure that the post parent is in the correct language when using bulk edit
*
* @since 1.8
*
* @param int $post_parent Post parent ID.
* @param int $post_id Post ID.
* @param array $new_postarr Array of parsed post data.
* @param array $postarr Array of sanitized, but otherwise unmodified post data.
* @return int
*/
public function wp_insert_post_parent( $post_parent, $post_id, $new_postarr, $postarr ) {
if ( isset( $postarr['bulk_edit'] ) ) {
check_admin_referer( 'bulk-posts' );
$lang = -1 == $postarr['inline_lang_choice'] ?
$this->model->post->get_language( $post_id ) :
$this->model->get_language( $postarr['inline_lang_choice'] );
$post_parent = $this->model->post->get_translation( $post_parent, $lang );
}
return $post_parent;
}
/**
* Called when a post, page or media is deleted
* Don't delete translations if this is a post revision thanks to AndyDeGroo who catched this bug
* http://wordpress.org/support/topic/plugin-polylang-quick-edit-still-breaks-translation-linking-of-pages-in-072
*
* @since 0.1
*
* @param int $post_id
*/
public function delete_post( $post_id ) {
if ( ! wp_is_post_revision( $post_id ) ) {
$this->model->post->delete_translation( $post_id );
}
}
/**
* Filters the pages by language in the parent dropdown list in the page attributes metabox
*
* @since 0.6
*
* @param array $dropdown_args Arguments passed to wp_dropdown_pages
* @param object $post
* @return array Modified arguments
*/
public function page_attributes_dropdown_pages_args( $dropdown_args, $post ) {
$dropdown_args['lang'] = isset( $_POST['lang'] ) ? $this->model->get_language( $_POST['lang'] ) : $this->model->post->get_language( $post->ID ); // ajax or not ?
if ( ! $dropdown_args['lang'] ) {
$dropdown_args['lang'] = $this->pref_lang;
}
return $dropdown_args;
}
}
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