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<?php
/**
* WPSEO plugin file.
*
* @package WPSEO\Admin
*/
/**
* Adds the UI to change the primary term for a post.
*/
class WPSEO_Primary_Term_Admin implements WPSEO_WordPress_Integration {
/**
* Constructor.
*
* @return void
*/
public function register_hooks() {
add_filter( 'wpseo_content_meta_section_content', [ $this, 'add_input_fields' ] );
add_action( 'admin_footer', [ $this, 'wp_footer' ], 10 );
add_action( 'admin_enqueue_scripts', [ $this, 'enqueue_assets' ] );
}
/**
* Gets the current post ID.
*
* @return int The post ID.
*/
protected function get_current_id() {
// phpcs:ignore WordPress.Security.NonceVerification.Recommended,WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Reason: We are not processing form information, We are casting to an integer.
$post_id = isset( $_GET['post'] ) && is_string( $_GET['post'] ) ? (int) wp_unslash( $_GET['post'] ) : 0;
if ( $post_id === 0 && isset( $GLOBALS['post_ID'] ) ) {
$post_id = (int) $GLOBALS['post_ID'];
}
return $post_id;
}
/**
* Adds hidden fields for primary taxonomies.
*
* @param string $content The metabox content.
*
* @return string The HTML content.
*/
public function add_input_fields( $content ) {
$taxonomies = $this->get_primary_term_taxonomies();
foreach ( $taxonomies as $taxonomy ) {
$content .= $this->primary_term_field( $taxonomy->name );
$content .= wp_nonce_field( 'save-primary-term', WPSEO_Meta::$form_prefix . 'primary_' . $taxonomy->name . '_nonce', false, false );
}
return $content;
}
/**
* Generates the HTML for a hidden field for a primary taxonomy.
*
* @param string $taxonomy_name The taxonomy's slug.
*
* @return string The HTML for a hidden primary taxonomy field.
*/
protected function primary_term_field( $taxonomy_name ) {
return sprintf(
'<input class="yoast-wpseo-primary-term" type="hidden" id="%1$s" name="%2$s" value="%3$s" />',
esc_attr( $this->generate_field_id( $taxonomy_name ) ),
esc_attr( $this->generate_field_name( $taxonomy_name ) ),
esc_attr( $this->get_primary_term( $taxonomy_name ) ),
);
}
/**
* Generates an id for a primary taxonomy's hidden field.
*
* @param string $taxonomy_name The taxonomy's slug.
*
* @return string The field id.
*/
protected function generate_field_id( $taxonomy_name ) {
return 'yoast-wpseo-primary-' . $taxonomy_name;
}
/**
* Generates a name for a primary taxonomy's hidden field.
*
* @param string $taxonomy_name The taxonomy's slug.
*
* @return string The field id.
*/
protected function generate_field_name( $taxonomy_name ) {
return WPSEO_Meta::$form_prefix . 'primary_' . $taxonomy_name . '_term';
}
/**
* Adds primary term templates.
*
* @return void
*/
public function wp_footer() {
$taxonomies = $this->get_primary_term_taxonomies();
if ( ! empty( $taxonomies ) ) {
$this->include_js_templates();
}
}
/**
* Enqueues all the assets needed for the primary term interface.
*
* @return void
*/
public function enqueue_assets() {
global $pagenow;
if ( ! WPSEO_Metabox::is_post_edit( $pagenow ) ) {
return;
}
$taxonomies = $this->get_primary_term_taxonomies();
// Only enqueue if there are taxonomies that need a primary term.
if ( empty( $taxonomies ) ) {
return;
}
$asset_manager = new WPSEO_Admin_Asset_Manager();
$asset_manager->enqueue_style( 'primary-category' );
$mapped_taxonomies = $this->get_mapped_taxonomies_for_js( $taxonomies );
$data = [
'taxonomies' => $mapped_taxonomies,
];
$asset_manager->localize_script( 'post-edit', 'wpseoPrimaryCategoryL10n', $data );
$asset_manager->localize_script( 'post-edit-classic', 'wpseoPrimaryCategoryL10n', $data );
}
/**
* Gets the id of the primary term.
*
* @param string $taxonomy_name Taxonomy name for the term.
*
* @return int primary term id
*/
protected function get_primary_term( $taxonomy_name ) {
$primary_term = new WPSEO_Primary_Term( $taxonomy_name, $this->get_current_id() );
return $primary_term->get_primary_term();
}
/**
* Returns all the taxonomies for which the primary term selection is enabled.
*
* @param int|null $post_id Default current post ID.
* @return array
*/
protected function get_primary_term_taxonomies( $post_id = null ) {
$post_id ??= $this->get_current_id();
$taxonomies = wp_cache_get( 'primary_term_taxonomies_' . $post_id, 'wpseo' );
if ( $taxonomies !== false ) {
return $taxonomies;
}
$taxonomies = $this->generate_primary_term_taxonomies( $post_id );
wp_cache_set( 'primary_term_taxonomies_' . $post_id, $taxonomies, 'wpseo' );
return $taxonomies;
}
/**
* Includes templates file.
*
* @return void
*/
protected function include_js_templates() {
include_once WPSEO_PATH . 'admin/views/js-templates-primary-term.php';
}
/**
* Generates the primary term taxonomies.
*
* @param int $post_id ID of the post.
*
* @return array
*/
protected function generate_primary_term_taxonomies( $post_id ) {
$post_type = get_post_type( $post_id );
$all_taxonomies = get_object_taxonomies( $post_type, 'objects' );
$all_taxonomies = array_filter( $all_taxonomies, [ $this, 'filter_hierarchical_taxonomies' ] );
/**
* Filters which taxonomies for which the user can choose the primary term.
*
* @param array $taxonomies An array of taxonomy objects that are primary_term enabled.
* @param string $post_type The post type for which to filter the taxonomies.
* @param array $all_taxonomies All taxonomies for this post types, even ones that don't have primary term
* enabled.
*/
$taxonomies = (array) apply_filters( 'wpseo_primary_term_taxonomies', $all_taxonomies, $post_type, $all_taxonomies );
return $taxonomies;
}
/**
* Creates a map of taxonomies for localization.
*
* @param array $taxonomies The taxononmies that should be mapped.
*
* @return array The mapped taxonomies.
*/
protected function get_mapped_taxonomies_for_js( $taxonomies ) {
return array_map( [ $this, 'map_taxonomies_for_js' ], $taxonomies );
}
/**
* Returns an array suitable for use in the javascript.
*
* @param stdClass $taxonomy The taxonomy to map.
*
* @return array The mapped taxonomy.
*/
private function map_taxonomies_for_js( $taxonomy ) {
$primary_term = $this->get_primary_term( $taxonomy->name );
if ( empty( $primary_term ) ) {
$primary_term = '';
}
$terms = get_terms(
[
'taxonomy' => $taxonomy->name,
'update_term_meta_cache' => false,
'fields' => 'id=>name',
],
);
$mapped_terms_for_js = [];
foreach ( $terms as $id => $name ) {
$mapped_terms_for_js[] = [
'id' => $id,
'name' => $name,
];
}
return [
'title' => $taxonomy->labels->singular_name,
'name' => $taxonomy->name,
'primary' => $primary_term,
'singularLabel' => $taxonomy->labels->singular_name,
'fieldId' => $this->generate_field_id( $taxonomy->name ),
'restBase' => ( $taxonomy->rest_base ) ? $taxonomy->rest_base : $taxonomy->name,
'terms' => $mapped_terms_for_js,
];
}
/**
* Returns whether or not a taxonomy is hierarchical.
*
* @param stdClass $taxonomy Taxonomy object.
*
* @return bool
*/
private function filter_hierarchical_taxonomies( $taxonomy ) {
return (bool) $taxonomy->hierarchical;
}
}