WordPress/wp-includes/block-template-utils.php
Sergey Biryukov 08f5675e1c Editor: Ensure get_block_templates() returns unique templates or template parts.
The function was using the `array_column()` PHP function on an array of objects, which works as expected on PHP 7 or later, but not on PHP 5.6.

This resulted in customized templates being listed multiple times on the Templates and Template Parts screens, and being repeatedly added between lists when switching between the screens.

The issue is now resolved by replacing `array_column()` with the `wp_list_pluck()` WordPress core function, which provides consistent behavior beetween PHP versions.

Reference: [https://github.com/php/php-src/blob/PHP-7.0.0/UPGRADING#L626 PHP 7.0 Upgrade Notes: array_column()].

Props uofaberdeendarren, antonvlasenko, ironprogrammer, jonmackintosh, costdev, hellofromTonya, swissspidy, rudlinkon.
Fixes #56271.
Built from https://develop.svn.wordpress.org/trunk@53927


git-svn-id: http://core.svn.wordpress.org/trunk@53486 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-08-23 14:52:12 +00:00

1015 lines
32 KiB
PHP

<?php
/**
* Utilities used to fetch and create templates and template parts.
*
* @package WordPress
* @since 5.8.0
*/
// Define constants for supported wp_template_part_area taxonomy.
if ( ! defined( 'WP_TEMPLATE_PART_AREA_HEADER' ) ) {
define( 'WP_TEMPLATE_PART_AREA_HEADER', 'header' );
}
if ( ! defined( 'WP_TEMPLATE_PART_AREA_FOOTER' ) ) {
define( 'WP_TEMPLATE_PART_AREA_FOOTER', 'footer' );
}
if ( ! defined( 'WP_TEMPLATE_PART_AREA_SIDEBAR' ) ) {
define( 'WP_TEMPLATE_PART_AREA_SIDEBAR', 'sidebar' );
}
if ( ! defined( 'WP_TEMPLATE_PART_AREA_UNCATEGORIZED' ) ) {
define( 'WP_TEMPLATE_PART_AREA_UNCATEGORIZED', 'uncategorized' );
}
/**
* For backward compatibility reasons,
* block themes might be using block-templates or block-template-parts,
* this function ensures we fallback to these folders properly.
*
* @since 5.9.0
*
* @param string $theme_stylesheet The stylesheet. Default is to leverage the main theme root.
*
* @return string[] {
* Folder names used by block themes.
*
* @type string $wp_template Theme-relative directory name for block templates.
* @type string $wp_template_part Theme-relative directory name for block template parts.
* }
*/
function get_block_theme_folders( $theme_stylesheet = null ) {
$theme_name = null === $theme_stylesheet ? get_stylesheet() : $theme_stylesheet;
$root_dir = get_theme_root( $theme_name );
$theme_dir = "$root_dir/$theme_name";
if ( file_exists( $theme_dir . '/block-templates' ) || file_exists( $theme_dir . '/block-template-parts' ) ) {
return array(
'wp_template' => 'block-templates',
'wp_template_part' => 'block-template-parts',
);
}
return array(
'wp_template' => 'templates',
'wp_template_part' => 'parts',
);
}
/**
* Returns a filtered list of allowed area values for template parts.
*
* @since 5.9.0
*
* @return array The supported template part area values.
*/
function get_allowed_block_template_part_areas() {
$default_area_definitions = array(
array(
'area' => WP_TEMPLATE_PART_AREA_UNCATEGORIZED,
'label' => __( 'General' ),
'description' => __(
'General templates often perform a specific role like displaying post content, and are not tied to any particular area.'
),
'icon' => 'layout',
'area_tag' => 'div',
),
array(
'area' => WP_TEMPLATE_PART_AREA_HEADER,
'label' => __( 'Header' ),
'description' => __(
'The Header template defines a page area that typically contains a title, logo, and main navigation.'
),
'icon' => 'header',
'area_tag' => 'header',
),
array(
'area' => WP_TEMPLATE_PART_AREA_FOOTER,
'label' => __( 'Footer' ),
'description' => __(
'The Footer template defines a page area that typically contains site credits, social links, or any other combination of blocks.'
),
'icon' => 'footer',
'area_tag' => 'footer',
),
);
/**
* Filters the list of allowed template part area values.
*
* @since 5.9.0
*
* @param array $default_area_definitions An array of supported area objects.
*/
return apply_filters( 'default_wp_template_part_areas', $default_area_definitions );
}
/**
* Returns a filtered list of default template types, containing their
* localized titles and descriptions.
*
* @since 5.9.0
*
* @return array The default template types.
*/
function get_default_block_template_types() {
$default_template_types = array(
'index' => array(
'title' => _x( 'Index', 'Template name' ),
'description' => __( 'Displays posts.' ),
),
'home' => array(
'title' => _x( 'Home', 'Template name' ),
'description' => __( 'Displays posts on the homepage, or on the Posts page if a static homepage is set.' ),
),
'front-page' => array(
'title' => _x( 'Front Page', 'Template name' ),
'description' => __( 'Displays the homepage.' ),
),
'singular' => array(
'title' => _x( 'Singular', 'Template name' ),
'description' => __( 'Displays a single post or page.' ),
),
'single' => array(
'title' => _x( 'Single Post', 'Template name' ),
'description' => __( 'Displays a single post.' ),
),
'page' => array(
'title' => _x( 'Page', 'Template name' ),
'description' => __( 'Displays a single page.' ),
),
'archive' => array(
'title' => _x( 'Archive', 'Template name' ),
'description' => __( 'Displays post categories, tags, and other archives.' ),
),
'author' => array(
'title' => _x( 'Author', 'Template name' ),
'description' => __( 'Displays latest posts written by a single author.' ),
),
'category' => array(
'title' => _x( 'Category', 'Template name' ),
'description' => __( 'Displays latest posts in single post category.' ),
),
'taxonomy' => array(
'title' => _x( 'Taxonomy', 'Template name' ),
'description' => __( 'Displays latest posts from a single post taxonomy.' ),
),
'date' => array(
'title' => _x( 'Date', 'Template name' ),
'description' => __( 'Displays posts from a specific date.' ),
),
'tag' => array(
'title' => _x( 'Tag', 'Template name' ),
'description' => __( 'Displays latest posts with a single post tag.' ),
),
'attachment' => array(
'title' => __( 'Media' ),
'description' => __( 'Displays individual media items or attachments.' ),
),
'search' => array(
'title' => _x( 'Search', 'Template name' ),
'description' => __( 'Displays search results.' ),
),
'privacy-policy' => array(
'title' => __( 'Privacy Policy' ),
'description' => __( 'Displays the privacy policy page.' ),
),
'404' => array(
'title' => _x( '404', 'Template name' ),
'description' => __( 'Displays when no content is found.' ),
),
);
/**
* Filters the list of template types.
*
* @since 5.9.0
*
* @param array $default_template_types An array of template types, formatted as [ slug => [ title, description ] ].
*/
return apply_filters( 'default_template_types', $default_template_types );
}
/**
* Checks whether the input 'area' is a supported value.
* Returns the input if supported, otherwise returns the 'uncategorized' value.
*
* @since 5.9.0
* @access private
*
* @param string $type Template part area name.
* @return string Input if supported, else the uncategorized value.
*/
function _filter_block_template_part_area( $type ) {
$allowed_areas = array_map(
static function ( $item ) {
return $item['area'];
},
get_allowed_block_template_part_areas()
);
if ( in_array( $type, $allowed_areas, true ) ) {
return $type;
}
$warning_message = sprintf(
/* translators: %1$s: Template area type, %2$s: the uncategorized template area value. */
__( '"%1$s" is not a supported wp_template_part area value and has been added as "%2$s".' ),
$type,
WP_TEMPLATE_PART_AREA_UNCATEGORIZED
);
trigger_error( $warning_message, E_USER_NOTICE );
return WP_TEMPLATE_PART_AREA_UNCATEGORIZED;
}
/**
* Finds all nested template part file paths in a theme's directory.
*
* @since 5.9.0
* @access private
*
* @param string $base_directory The theme's file path.
* @return array A list of paths to all template part files.
*/
function _get_block_templates_paths( $base_directory ) {
$path_list = array();
if ( file_exists( $base_directory ) ) {
$nested_files = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $base_directory ) );
$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;
}
/**
* Retrieves the template file from the theme for a given slug.
*
* @since 5.9.0
* @access private
*
* @param string $template_type 'wp_template' or 'wp_template_part'.
* @param string $slug Template slug.
* @return array|null Template.
*/
function _get_block_template_file( $template_type, $slug ) {
if ( 'wp_template' !== $template_type && 'wp_template_part' !== $template_type ) {
return null;
}
$themes = array(
get_stylesheet() => get_stylesheet_directory(),
get_template() => get_template_directory(),
);
foreach ( $themes as $theme_slug => $theme_dir ) {
$template_base_paths = get_block_theme_folders( $theme_slug );
$file_path = $theme_dir . '/' . $template_base_paths[ $template_type ] . '/' . $slug . '.html';
if ( file_exists( $file_path ) ) {
$new_template_item = array(
'slug' => $slug,
'path' => $file_path,
'theme' => $theme_slug,
'type' => $template_type,
);
if ( 'wp_template_part' === $template_type ) {
return _add_block_template_part_area_info( $new_template_item );
}
if ( 'wp_template' === $template_type ) {
return _add_block_template_info( $new_template_item );
}
return $new_template_item;
}
}
return null;
}
/**
* Retrieves the template files from the theme.
*
* @since 5.9.0
* @access private
*
* @param string $template_type 'wp_template' or 'wp_template_part'.
* @return array Template.
*/
function _get_block_templates_files( $template_type ) {
if ( 'wp_template' !== $template_type && 'wp_template_part' !== $template_type ) {
return null;
}
$themes = array(
get_stylesheet() => get_stylesheet_directory(),
get_template() => get_template_directory(),
);
$template_files = array();
foreach ( $themes as $theme_slug => $theme_dir ) {
$template_base_paths = get_block_theme_folders( $theme_slug );
$theme_template_files = _get_block_templates_paths( $theme_dir . '/' . $template_base_paths[ $template_type ] );
foreach ( $theme_template_files as $template_file ) {
$template_base_path = $template_base_paths[ $template_type ];
$template_slug = substr(
$template_file,
// Starting position of slug.
strpos( $template_file, $template_base_path . DIRECTORY_SEPARATOR ) + 1 + strlen( $template_base_path ),
// Subtract ending '.html'.
-5
);
$new_template_item = array(
'slug' => $template_slug,
'path' => $template_file,
'theme' => $theme_slug,
'type' => $template_type,
);
if ( 'wp_template_part' === $template_type ) {
$template_files[] = _add_block_template_part_area_info( $new_template_item );
}
if ( 'wp_template' === $template_type ) {
$template_files[] = _add_block_template_info( $new_template_item );
}
}
}
return $template_files;
}
/**
* Attempts to add custom template information to the template item.
*
* @since 5.9.0
* @access private
*
* @param array $template_item Template to add information to (requires 'slug' field).
* @return array Template item.
*/
function _add_block_template_info( $template_item ) {
if ( ! WP_Theme_JSON_Resolver::theme_has_support() ) {
return $template_item;
}
$theme_data = WP_Theme_JSON_Resolver::get_theme_data()->get_custom_templates();
if ( isset( $theme_data[ $template_item['slug'] ] ) ) {
$template_item['title'] = $theme_data[ $template_item['slug'] ]['title'];
$template_item['postTypes'] = $theme_data[ $template_item['slug'] ]['postTypes'];
}
return $template_item;
}
/**
* Attempts to add the template part's area information to the input template.
*
* @since 5.9.0
* @access private
*
* @param array $template_info Template to add information to (requires 'type' and 'slug' fields).
* @return array Template info.
*/
function _add_block_template_part_area_info( $template_info ) {
if ( WP_Theme_JSON_Resolver::theme_has_support() ) {
$theme_data = WP_Theme_JSON_Resolver::get_theme_data()->get_template_parts();
}
if ( isset( $theme_data[ $template_info['slug'] ]['area'] ) ) {
$template_info['title'] = $theme_data[ $template_info['slug'] ]['title'];
$template_info['area'] = _filter_block_template_part_area( $theme_data[ $template_info['slug'] ]['area'] );
} else {
$template_info['area'] = WP_TEMPLATE_PART_AREA_UNCATEGORIZED;
}
return $template_info;
}
/**
* Returns an array containing the references of
* the passed blocks and their inner blocks.
*
* @since 5.9.0
* @access private
*
* @param array $blocks array of blocks.
* @return array block references to the passed blocks and their inner blocks.
*/
function _flatten_blocks( &$blocks ) {
$all_blocks = array();
$queue = array();
foreach ( $blocks as &$block ) {
$queue[] = &$block;
}
while ( count( $queue ) > 0 ) {
$block = &$queue[0];
array_shift( $queue );
$all_blocks[] = &$block;
if ( ! empty( $block['innerBlocks'] ) ) {
foreach ( $block['innerBlocks'] as &$inner_block ) {
$queue[] = &$inner_block;
}
}
}
return $all_blocks;
}
/**
* Parses wp_template content and injects the active theme's
* stylesheet as a theme attribute into each wp_template_part
*
* @since 5.9.0
* @access private
*
* @param string $template_content serialized wp_template content.
* @return string Updated 'wp_template' content.
*/
function _inject_theme_attribute_in_block_template_content( $template_content ) {
$has_updated_content = false;
$new_content = '';
$template_blocks = parse_blocks( $template_content );
$blocks = _flatten_blocks( $template_blocks );
foreach ( $blocks as &$block ) {
if (
'core/template-part' === $block['blockName'] &&
! isset( $block['attrs']['theme'] )
) {
$block['attrs']['theme'] = wp_get_theme()->get_stylesheet();
$has_updated_content = true;
}
}
if ( $has_updated_content ) {
foreach ( $template_blocks as &$block ) {
$new_content .= serialize_block( $block );
}
return $new_content;
}
return $template_content;
}
/**
* Parses a block template and removes the theme attribute from each template part.
*
* @since 5.9.0
* @access private
*
* @param string $template_content Serialized block template content.
* @return string Updated block template content.
*/
function _remove_theme_attribute_in_block_template_content( $template_content ) {
$has_updated_content = false;
$new_content = '';
$template_blocks = parse_blocks( $template_content );
$blocks = _flatten_blocks( $template_blocks );
foreach ( $blocks as $key => $block ) {
if ( 'core/template-part' === $block['blockName'] && isset( $block['attrs']['theme'] ) ) {
unset( $blocks[ $key ]['attrs']['theme'] );
$has_updated_content = true;
}
}
if ( ! $has_updated_content ) {
return $template_content;
}
foreach ( $template_blocks as $block ) {
$new_content .= serialize_block( $block );
}
return $new_content;
}
/**
* Builds a unified template object based on a theme file.
*
* @since 5.9.0
* @access private
*
* @param array $template_file Theme file.
* @param string $template_type 'wp_template' or 'wp_template_part'.
* @return WP_Block_Template Template.
*/
function _build_block_template_result_from_file( $template_file, $template_type ) {
$default_template_types = get_default_block_template_types();
$template_content = file_get_contents( $template_file['path'] );
$theme = wp_get_theme()->get_stylesheet();
$template = new WP_Block_Template();
$template->id = $theme . '//' . $template_file['slug'];
$template->theme = $theme;
$template->content = _inject_theme_attribute_in_block_template_content( $template_content );
$template->slug = $template_file['slug'];
$template->source = 'theme';
$template->type = $template_type;
$template->title = ! empty( $template_file['title'] ) ? $template_file['title'] : $template_file['slug'];
$template->status = 'publish';
$template->has_theme_file = true;
$template->is_custom = true;
if ( 'wp_template' === $template_type && isset( $default_template_types[ $template_file['slug'] ] ) ) {
$template->description = $default_template_types[ $template_file['slug'] ]['description'];
$template->title = $default_template_types[ $template_file['slug'] ]['title'];
$template->is_custom = false;
}
if ( 'wp_template' === $template_type && isset( $template_file['postTypes'] ) ) {
$template->post_types = $template_file['postTypes'];
}
if ( 'wp_template_part' === $template_type && isset( $template_file['area'] ) ) {
$template->area = $template_file['area'];
}
return $template;
}
/**
* Builds a unified template object based a post Object.
*
* @since 5.9.0
* @access private
*
* @param WP_Post $post Template post.
* @return WP_Block_Template|WP_Error Template.
*/
function _build_block_template_result_from_post( $post ) {
$default_template_types = get_default_block_template_types();
$terms = get_the_terms( $post, 'wp_theme' );
if ( is_wp_error( $terms ) ) {
return $terms;
}
if ( ! $terms ) {
return new WP_Error( 'template_missing_theme', __( 'No theme is defined for this template.' ) );
}
$theme = $terms[0]->name;
$has_theme_file = wp_get_theme()->get_stylesheet() === $theme &&
null !== _get_block_template_file( $post->post_type, $post->post_name );
$origin = get_post_meta( $post->ID, 'origin', true );
$template = new WP_Block_Template();
$template->wp_id = $post->ID;
$template->id = $theme . '//' . $post->post_name;
$template->theme = $theme;
$template->content = $post->post_content;
$template->slug = $post->post_name;
$template->source = 'custom';
$template->origin = ! empty( $origin ) ? $origin : null;
$template->type = $post->post_type;
$template->description = $post->post_excerpt;
$template->title = $post->post_title;
$template->status = $post->post_status;
$template->has_theme_file = $has_theme_file;
$template->is_custom = true;
$template->author = $post->post_author;
if ( 'wp_template' === $post->post_type && isset( $default_template_types[ $template->slug ] ) ) {
$template->is_custom = false;
}
if ( 'wp_template_part' === $post->post_type ) {
$type_terms = get_the_terms( $post, 'wp_template_part_area' );
if ( ! is_wp_error( $type_terms ) && false !== $type_terms ) {
$template->area = $type_terms[0]->name;
}
}
return $template;
}
/**
* Retrieves a list of unified template objects based on a query.
*
* @since 5.8.0
*
* @param array $query {
* Optional. Arguments to retrieve templates.
*
* @type array $slug__in List of slugs to include.
* @type int $wp_id Post ID of customized template.
* @type string $area A 'wp_template_part_area' taxonomy value to filter by (for wp_template_part template type only).
* @type string $post_type Post type to get the templates for.
* }
* @param string $template_type 'wp_template' or 'wp_template_part'.
* @return array Templates.
*/
function get_block_templates( $query = array(), $template_type = 'wp_template' ) {
/**
* Filters the block templates array before the query takes place.
*
* Return a non-null value to bypass the WordPress queries.
*
* @since 5.9.0
*
* @param WP_Block_Template[]|null $block_templates Return an array of block templates to short-circuit the default query,
* or null to allow WP to run it's normal queries.
* @param array $query {
* Optional. Arguments to retrieve templates.
*
* @type array $slug__in List of slugs to include.
* @type int $wp_id Post ID of customized template.
* @type string $post_type Post type to get the templates for.
* }
* @param string $template_type wp_template or wp_template_part.
*/
$templates = apply_filters( 'pre_get_block_templates', null, $query, $template_type );
if ( ! is_null( $templates ) ) {
return $templates;
}
$post_type = isset( $query['post_type'] ) ? $query['post_type'] : '';
$wp_query_args = array(
'post_status' => array( 'auto-draft', 'draft', 'publish' ),
'post_type' => $template_type,
'posts_per_page' => -1,
'no_found_rows' => true,
'tax_query' => array(
array(
'taxonomy' => 'wp_theme',
'field' => 'name',
'terms' => wp_get_theme()->get_stylesheet(),
),
),
);
if ( 'wp_template_part' === $template_type && isset( $query['area'] ) ) {
$wp_query_args['tax_query'][] = array(
'taxonomy' => 'wp_template_part_area',
'field' => 'name',
'terms' => $query['area'],
);
$wp_query_args['tax_query']['relation'] = 'AND';
}
if ( isset( $query['slug__in'] ) ) {
$wp_query_args['post_name__in'] = $query['slug__in'];
}
// This is only needed for the regular templates/template parts post type listing and editor.
if ( isset( $query['wp_id'] ) ) {
$wp_query_args['p'] = $query['wp_id'];
} else {
$wp_query_args['post_status'] = 'publish';
}
$template_query = new WP_Query( $wp_query_args );
$query_result = array();
foreach ( $template_query->posts as $post ) {
$template = _build_block_template_result_from_post( $post );
if ( is_wp_error( $template ) ) {
continue;
}
if ( $post_type && ! $template->is_custom ) {
continue;
}
$query_result[] = $template;
}
if ( ! isset( $query['wp_id'] ) ) {
$template_files = _get_block_templates_files( $template_type );
foreach ( $template_files as $template_file ) {
$template = _build_block_template_result_from_file( $template_file, $template_type );
if ( $post_type && ! $template->is_custom ) {
continue;
}
if ( $post_type &&
isset( $template->post_types ) &&
! in_array( $post_type, $template->post_types, true )
) {
continue;
}
$is_not_custom = false === array_search(
wp_get_theme()->get_stylesheet() . '//' . $template_file['slug'],
wp_list_pluck( $query_result, 'id' ),
true
);
$fits_slug_query =
! isset( $query['slug__in'] ) || in_array( $template_file['slug'], $query['slug__in'], true );
$fits_area_query =
! isset( $query['area'] ) || $template_file['area'] === $query['area'];
$should_include = $is_not_custom && $fits_slug_query && $fits_area_query;
if ( $should_include ) {
$query_result[] = $template;
}
}
}
/**
* Filters the array of queried block templates array after they've been fetched.
*
* @since 5.9.0
*
* @param WP_Block_Template[] $query_result Array of found block templates.
* @param array $query {
* Optional. Arguments to retrieve templates.
*
* @type array $slug__in List of slugs to include.
* @type int $wp_id Post ID of customized template.
* }
* @param string $template_type wp_template or wp_template_part.
*/
return apply_filters( 'get_block_templates', $query_result, $query, $template_type );
}
/**
* Retrieves a single unified template object using its id.
*
* @since 5.8.0
*
* @param string $id Template unique identifier (example: theme_slug//template_slug).
* @param string $template_type Optional. Template type: `'wp_template'` or '`wp_template_part'`.
* Default `'wp_template'`.
* @return WP_Block_Template|null Template.
*/
function get_block_template( $id, $template_type = 'wp_template' ) {
/**
* Filters the block template object before the query takes place.
*
* Return a non-null value to bypass the WordPress queries.
*
* @since 5.9.0
*
* @param WP_Block_Template|null $block_template Return block template object to short-circuit the default query,
* or null to allow WP to run its normal queries.
* @param string $id Template unique identifier (example: theme_slug//template_slug).
* @param string $template_type Template type: `'wp_template'` or '`wp_template_part'`.
*/
$block_template = apply_filters( 'pre_get_block_template', null, $id, $template_type );
if ( ! is_null( $block_template ) ) {
return $block_template;
}
$parts = explode( '//', $id, 2 );
if ( count( $parts ) < 2 ) {
return null;
}
list( $theme, $slug ) = $parts;
$wp_query_args = array(
'post_name__in' => array( $slug ),
'post_type' => $template_type,
'post_status' => array( 'auto-draft', 'draft', 'publish', 'trash' ),
'posts_per_page' => 1,
'no_found_rows' => true,
'tax_query' => array(
array(
'taxonomy' => 'wp_theme',
'field' => 'name',
'terms' => $theme,
),
),
);
$template_query = new WP_Query( $wp_query_args );
$posts = $template_query->posts;
if ( count( $posts ) > 0 ) {
$template = _build_block_template_result_from_post( $posts[0] );
if ( ! is_wp_error( $template ) ) {
return $template;
}
}
$block_template = get_block_file_template( $id, $template_type );
/**
* Filters the queried block template object after it's been fetched.
*
* @since 5.9.0
*
* @param WP_Block_Template|null $block_template The found block template, or null if there isn't one.
* @param string $id Template unique identifier (example: theme_slug//template_slug).
* @param array $template_type Template type: `'wp_template'` or '`wp_template_part'`.
*/
return apply_filters( 'get_block_template', $block_template, $id, $template_type );
}
/**
* Retrieves a single unified template object using its id.
*
* @since 5.9.0
*
* @param string $id Template unique identifier (example: theme_slug//template_slug).
* @param string $template_type Optional. Template type: `'wp_template'` or '`wp_template_part'`.
* Default `'wp_template'`.
* @return WP_Block_Template|null The found block template, or null if there isn't one.
*/
function get_block_file_template( $id, $template_type = 'wp_template' ) {
/**
* Filters the block templates array before the query takes place.
*
* Return a non-null value to bypass the WordPress queries.
*
* @since 5.9.0
*
* @param WP_Block_Template|null $block_template Return block template object to short-circuit the default query,
* or null to allow WP to run its normal queries.
* @param string $id Template unique identifier (example: theme_slug//template_slug).
* @param string $template_type Template type: `'wp_template'` or '`wp_template_part'`.
*/
$block_template = apply_filters( 'pre_get_block_file_template', null, $id, $template_type );
if ( ! is_null( $block_template ) ) {
return $block_template;
}
$parts = explode( '//', $id, 2 );
if ( count( $parts ) < 2 ) {
/** This filter is documented in wp-includes/block-template-utils.php */
return apply_filters( 'get_block_file_template', null, $id, $template_type );
}
list( $theme, $slug ) = $parts;
if ( wp_get_theme()->get_stylesheet() !== $theme ) {
/** This filter is documented in wp-includes/block-template-utils.php */
return apply_filters( 'get_block_file_template', null, $id, $template_type );
}
$template_file = _get_block_template_file( $template_type, $slug );
if ( null === $template_file ) {
/** This filter is documented in wp-includes/block-template-utils.php */
return apply_filters( 'get_block_file_template', null, $id, $template_type );
}
$block_template = _build_block_template_result_from_file( $template_file, $template_type );
/**
* Filters the array of queried block templates array after they've been fetched.
*
* @since 5.9.0
*
* @param WP_Block_Template|null $block_template The found block template, or null if there is none.
* @param string $id Template unique identifier (example: theme_slug//template_slug).
* @param string $template_type Template type: `'wp_template'` or '`wp_template_part'`.
*/
return apply_filters( 'get_block_file_template', $block_template, $id, $template_type );
}
/**
* Prints a template-part.
*
* @since 5.9.0
*
* @param string $part The template-part to print. Use "header" or "footer".
*/
function block_template_part( $part ) {
$template_part = get_block_template( get_stylesheet() . '//' . $part, 'wp_template_part' );
if ( ! $template_part || empty( $template_part->content ) ) {
return;
}
echo do_blocks( $template_part->content );
}
/**
* Prints the header template-part.
*
* @since 5.9.0
*/
function block_header_area() {
block_template_part( 'header' );
}
/**
* Prints the footer template-part.
*
* @since 5.9.0
*/
function block_footer_area() {
block_template_part( 'footer' );
}
/**
* Determines whether a theme directory should be ignored during export.
*
* @since 6.0.0
*
* @param string $path The path of the file in the theme.
* @return Bool Whether this file is in an ignored directory.
*/
function wp_is_theme_directory_ignored( $path ) {
$directories_to_ignore = array( '.svn', '.git', '.hg', '.bzr', 'node_modules', 'vendor' );
foreach ( $directories_to_ignore as $directory ) {
if ( strpos( $path, $directory ) === 0 ) {
return true;
}
}
return false;
}
/**
* Creates an export of the current templates and
* template parts from the site editor at the
* specified path in a ZIP file.
*
* @since 5.9.0
* @since 6.0.0 Adds the whole theme to the export archive.
*
* @return WP_Error|string Path of the ZIP file or error on failure.
*/
function wp_generate_block_templates_export_file() {
if ( ! class_exists( 'ZipArchive' ) ) {
return new WP_Error( 'missing_zip_package', __( 'Zip Export not supported.' ) );
}
$obscura = wp_generate_password( 12, false, false );
$theme_name = basename( get_stylesheet() );
$filename = get_temp_dir() . $theme_name . $obscura . '.zip';
$zip = new ZipArchive();
if ( true !== $zip->open( $filename, ZipArchive::CREATE | ZipArchive::OVERWRITE ) ) {
return new WP_Error( 'unable_to_create_zip', __( 'Unable to open export file (archive) for writing.' ) );
}
$zip->addEmptyDir( 'templates' );
$zip->addEmptyDir( 'parts' );
// Get path of the theme.
$theme_path = wp_normalize_path( get_stylesheet_directory() );
// Create recursive directory iterator.
$theme_files = new RecursiveIteratorIterator(
new RecursiveDirectoryIterator( $theme_path ),
RecursiveIteratorIterator::LEAVES_ONLY
);
// Make a copy of the current theme.
foreach ( $theme_files as $file ) {
// Skip directories as they are added automatically.
if ( ! $file->isDir() ) {
// Get real and relative path for current file.
$file_path = wp_normalize_path( $file );
$relative_path = substr( $file_path, strlen( $theme_path ) + 1 );
if ( ! wp_is_theme_directory_ignored( $relative_path ) ) {
$zip->addFile( $file_path, $relative_path );
}
}
}
// Load templates into the zip file.
$templates = get_block_templates();
foreach ( $templates as $template ) {
$template->content = _remove_theme_attribute_in_block_template_content( $template->content );
$zip->addFromString(
'templates/' . $template->slug . '.html',
$template->content
);
}
// Load template parts into the zip file.
$template_parts = get_block_templates( array(), 'wp_template_part' );
foreach ( $template_parts as $template_part ) {
$zip->addFromString(
'parts/' . $template_part->slug . '.html',
$template_part->content
);
}
// Load theme.json into the zip file.
$tree = WP_Theme_JSON_Resolver::get_theme_data( array(), array( 'with_supports' => false ) );
// Merge with user data.
$tree->merge( WP_Theme_JSON_Resolver::get_user_data() );
$theme_json_raw = $tree->get_data();
// If a version is defined, add a schema.
if ( $theme_json_raw['version'] ) {
global $wp_version;
$theme_json_version = 'wp/' . substr( $wp_version, 0, 3 );
$schema = array( '$schema' => 'https://schemas.wp.org/' . $theme_json_version . '/theme.json' );
$theme_json_raw = array_merge( $schema, $theme_json_raw );
}
// Convert to a string.
$theme_json_encoded = wp_json_encode( $theme_json_raw, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE );
// Replace 4 spaces with a tab.
$theme_json_tabbed = preg_replace( '~(?:^|\G)\h{4}~m', "\t", $theme_json_encoded );
// Add the theme.json file to the zip.
$zip->addFromString(
'theme.json',
$theme_json_tabbed
);
// Save changes to the zip file.
$zip->close();
return $filename;
}