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<?php
/**
* Block template part functions.
*
* @package gutenberg
*/
/**
* Registers block editor 'wp_template_part' post type.
*/
function gutenberg_register_template_part_post_type() {
$labels = array(
'name' => __( 'Template Parts', 'gutenberg' ),
'singular_name' => __( 'Template Part', 'gutenberg' ),
'menu_name' => _x( 'Template Parts', 'Admin Menu text', 'gutenberg' ),
'add_new' => _x( 'Add New', 'Template Part', 'gutenberg' ),
'add_new_item' => __( 'Add New Template Part', 'gutenberg' ),
'new_item' => __( 'New Template Part', 'gutenberg' ),
'edit_item' => __( 'Edit Template Part', 'gutenberg' ),
'view_item' => __( 'View Template Part', 'gutenberg' ),
'all_items' => __( 'All Template Parts', 'gutenberg' ),
'search_items' => __( 'Search Template Parts', 'gutenberg' ),
'parent_item_colon' => __( 'Parent Template Part:', 'gutenberg' ),
'not_found' => __( 'No template parts found.', 'gutenberg' ),
'not_found_in_trash' => __( 'No template parts found in Trash.', 'gutenberg' ),
'archives' => __( 'Template part archives', 'gutenberg' ),
'insert_into_item' => __( 'Insert into template part', 'gutenberg' ),
'uploaded_to_this_item' => __( 'Uploaded to this template part', 'gutenberg' ),
'filter_items_list' => __( 'Filter template parts list', 'gutenberg' ),
'items_list_navigation' => __( 'Template parts list navigation', 'gutenberg' ),
'items_list' => __( 'Template parts list', 'gutenberg' ),
);
$args = array(
'labels' => $labels,
'description' => __( 'Template parts to include in your templates.', 'gutenberg' ),
'public' => false,
'has_archive' => false,
'show_ui' => true,
'show_in_menu' => 'themes.php',
'show_in_admin_bar' => false,
'show_in_rest' => true,
'rest_base' => 'template-parts',
'map_meta_cap' => true,
'supports' => array(
'title',
'slug',
'editor',
'revisions',
'custom-fields',
),
);
$meta_args = array(
'object_subtype' => 'wp_template_part',
'type' => 'string',
'description' => 'The theme that provided the template part, if any.',
'single' => true,
'show_in_rest' => true,
);
register_post_type( 'wp_template_part', $args );
register_meta( 'post', 'theme', $meta_args );
}
add_action( 'init', 'gutenberg_register_template_part_post_type' );
/**
* Filters `wp_template_part` posts slug resolution to bypass deduplication logic as
* template part slugs should be unique.
*
* @param string $slug The resolved slug (post_name).
* @param int $post_ID Post ID.
* @param string $post_status No uniqueness checks are made if the post is still draft or pending.
* @param string $post_type Post type.
* @param int $post_parent Post parent ID.
* @param int $original_slug The desired slug (post_name).
* @return string The original, desired slug.
*/
function gutenberg_filter_wp_template_part_wp_unique_post_slug( $slug, $post_ID, $post_status, $post_type, $post_parent, $original_slug ) {
if ( 'wp_template_part' === $post_type ) {
return $original_slug;
}
return $slug;
}
add_filter( 'wp_unique_post_slug', 'gutenberg_filter_wp_template_part_wp_unique_post_slug', 10, 6 );
/**
* Fixes the label of the 'wp_template_part' admin menu entry.
*/
function gutenberg_fix_template_part_admin_menu_entry() {
global $submenu;
if ( ! isset( $submenu['themes.php'] ) ) {
return;
}
$post_type = get_post_type_object( 'wp_template_part' );
if ( ! $post_type ) {
return;
}
foreach ( $submenu['themes.php'] as $key => $submenu_entry ) {
if ( $post_type->labels->all_items === $submenu['themes.php'][ $key ][0] ) {
$submenu['themes.php'][ $key ][0] = $post_type->labels->menu_name; // phpcs:ignore WordPress.WP.GlobalVariablesOverride
break;
}
}
}
add_action( 'admin_menu', 'gutenberg_fix_template_part_admin_menu_entry' );
/**
* Filters the 'wp_template_part' post type columns in the admin list table.
*
* @param array $columns Columns to display.
* @return array Filtered $columns.
*/
function gutenberg_filter_template_part_list_table_columns( array $columns ) {
$columns['slug'] = __( 'Slug', 'gutenberg' );
if ( isset( $columns['date'] ) ) {
unset( $columns['date'] );
}
return $columns;
}
add_filter( 'manage_wp_template_part_posts_columns', 'gutenberg_filter_template_part_list_table_columns' );
/**
* Renders column content for the 'wp_template_part' post type list table.
*
* @param string $column_name Column name to render.
* @param int $post_id Post ID.
*/
function gutenberg_render_template_part_list_table_column( $column_name, $post_id ) {
if ( 'slug' !== $column_name ) {
return;
}
$post = get_post( $post_id );
echo esc_html( $post->post_name );
}
add_action( 'manage_wp_template_part_posts_custom_column', 'gutenberg_render_template_part_list_table_column', 10, 2 );
/**
* Filter for adding a `resolved`, a `template`, and a `theme` parameter to `wp_template_part` queries.
*
* @param array $query_params The query parameters.
* @return array Filtered $query_params.
*/
function filter_rest_wp_template_part_collection_params( $query_params ) {
$query_params += array(
'resolved' => array(
'description' => __( 'Whether to filter for resolved template parts.', 'gutenberg' ),
'type' => 'boolean',
),
'template' => array(
'description' => __( 'The template slug for the template that the template part is used by.', 'gutenberg' ),
'type' => 'string',
),
'theme' => array(
'description' => __( 'The theme slug for the theme that created the template part.', 'gutenberg' ),
'type' => 'string',
),
);
return $query_params;
}
add_filter( 'rest_wp_template_part_collection_params', 'filter_rest_wp_template_part_collection_params', 99, 1 );
/**
* Filter for supporting the `resolved`, `template`, and `theme` parameters in `wp_template_part` queries.
*
* @param array $args The query arguments.
* @param WP_REST_Request $request The request object.
* @return array Filtered $args.
*/
function filter_rest_wp_template_part_query( $args, $request ) {
/**
* Unlike `filter_rest_wp_template_query`, we resolve queries also if there's only a `template` argument set.
* The difference is that in the case of templates, we can use the `slug` field that already exists (as part
* of the entities endpoint, wheras for template parts, we have to register the extra `template` argument),
* so we need the `resolved` flag to convey the different semantics (only return 'resolved' templates that match
* the `slug` vs return _all_ templates that match it (e.g. including all auto-drafts)).
*
* A template parts query with a `template` arg but not a `resolved` one is conceivable, but probably wouldn't be
* very useful: It'd be all template parts for all templates matching that `template` slug (including auto-drafts etc).
*
* @see filter_rest_wp_template_query
* @see filter_rest_wp_template_part_collection_params
* @see https://github.com/WordPress/gutenberg/pull/21878#discussion_r436961706
*/
if ( $request['resolved'] || $request['template'] ) {
$template_part_ids = array( 0 ); // Return nothing by default (the 0 is needed for `post__in`).
$template_types = $request['template'] ? array( $request['template'] ) : get_template_types();
foreach ( $template_types as $template_type ) {
// Skip 'embed' for now because it is not a regular template type.
if ( in_array( $template_type, array( 'embed' ), true ) ) {
continue;
}
$current_template = gutenberg_find_template_post_and_parts( $template_type );
if ( isset( $current_template ) ) {
$template_part_ids = $template_part_ids + $current_template['template_part_ids'];
}
}
$args['post__in'] = $template_part_ids;
$args['post_status'] = array( 'publish', 'auto-draft' );
}
if ( $request['theme'] ) {
$meta_query = isset( $args['meta_query'] ) ? $args['meta_query'] : array();
$meta_query[] = array(
'key' => 'theme',
'value' => $request['theme'],
);
// Ensure auto-drafts of all theme supplied template parts are created.
if ( wp_get_theme()->stylesheet === $request['theme'] ) {
/**
* Finds all nested template part file paths in a theme's directory.
*
* @param string $base_directory The theme's file path.
* @return array $path_list A list of paths to all template part files.
*/
function get_template_part_paths( $base_directory ) {
$path_list = array();
if ( file_exists( $base_directory . '/block-template-parts' ) ) {
$nested_files = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $base_directory . '/block-template-parts' ) );
$nested_html_files = new RegexIterator( $nested_files, '/^.+\.html$/i', RecursiveRegexIterator::GET_MATCH );
foreach ( $nested_html_files as $path => $file ) {
$path_list[] = $path;
}
}
return $path_list;
}
// Get file paths for all theme supplied template parts.
$template_part_files = get_template_part_paths( get_stylesheet_directory() );
if ( is_child_theme() ) {
$template_part_files = array_merge( $template_part_files, get_template_part_paths( get_template_directory() ) );
}
// Build and save each template part.
foreach ( $template_part_files as $template_part_file ) {
$content = file_get_contents( $template_part_file );
// Infer slug from filepath.
$slug = substr(
$template_part_file,
// Starting position of slug.
strpos( $template_part_file, 'block-template-parts/' ) + 21,
// Subtract ending '.html'.
-5
);
// Wrap content with the template part block, parse, and create auto-draft.
$template_part_string = '<!-- wp:template-part {"slug":"' . $slug . '","theme":"' . wp_get_theme()->get( 'TextDomain' ) . '"} -->' . $content . '<!-- /wp:template-part -->';
$template_part_block = parse_blocks( $template_part_string )[0];
create_auto_draft_for_template_part_block( $template_part_block );
}
};
$args['meta_query'] = $meta_query;
}
return $args;
}
add_filter( 'rest_wp_template_part_query', 'filter_rest_wp_template_part_query', 99, 2 );