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| Current File : //opt/wp/core/5.9/wp-includes/block-template-utils.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 as the site\'s home page, or as the Posts page when a static home page isn\'t set.' ),
),
'front-page' => array(
'title' => _x( 'Front Page', 'Template name' ),
'description' => __( 'Displays as the site\'s home page.' ),
),
'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 single post tag.' ),
),
'attachment' => array(
'title' => __( 'Media' ),
'description' => __( 'Displays individual media items or attachments.' ),
),
'search' => array(
'title' => _x( 'Search', 'Template name' ),
'description' => __( 'Template used to display 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 current 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;
}
/**
* Build 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;
}
/**
* Build 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'],
array_column( $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 string $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 );
}
/**
* Print 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 );
}
/**
* Print the header template-part.
*
* @since 5.9.0
*/
function block_header_area() {
block_template_part( 'header' );
}
/**
* Print the footer template-part.
*
* @since 5.9.0
*/
function block_footer_area() {
block_template_part( 'footer' );
}
/**
* 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
*
* @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 );
$filename = get_temp_dir() . 'edit-site-export-' . $obscura . '.zip';
$zip = new ZipArchive();
if ( true !== $zip->open( $filename, ZipArchive::CREATE ) ) {
return new WP_Error( 'unable_to_create_zip', __( 'Unable to open export file (archive) for writing.' ) );
}
$zip->addEmptyDir( 'theme' );
$zip->addEmptyDir( 'theme/templates' );
$zip->addEmptyDir( 'theme/parts' );
// 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(
'theme/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(
'theme/parts/' . $template_part->slug . '.html',
$template_part->content
);
}
// Save changes to the zip file.
$zip->close();
return $filename;
}