REST API: Bring new endpoints for Block Patterns from Gutenberg plugin

Related Gutenberg issue: WordPress/gutenberg#39889.

Backporting changes from the Gutenberg plugin:
- new Block Patterns REST API endpoint
- new Block Pattern Categories REST API endpoint
- updates to Query Loop related patterns
- support for custom taxonomies in Query Loop block

Props hellofromtonya, peterwilsoncc, ntsekouras, zieladam, ironprogrammer, spacedmonkey, timothyblynjacobs, antonvlasenko, jsnajdr.
See #55505.




git-svn-id: https://develop.svn.wordpress.org/trunk@53152 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/block-patterns.php

@@ -12,7 +12,7 @@
  * Registers the core block patterns and categories.
  *
  * @since 5.5.0
- * @private
+ * @access private
  */
 function _register_core_block_patterns_and_categories() {
 	$should_register_core_patterns = get_theme_support( 'core-block-patterns' );
@@ -127,3 +127,215 @@ function _load_remote_featured_patterns() {
 		}
 	}
 }
+
+/**
+ * Registers patterns from Pattern Directory provided by a theme's
+ * `theme.json` file.
+ *
+ * @since 6.0.0
+ * @access private
+ */
+function _register_remote_theme_patterns() {
+	if ( ! get_theme_support( 'core-block-patterns' ) ) {
+		return;
+	}
+
+	/** This filter is documented in wp-includes/block-patterns.php */
+	if ( ! apply_filters( 'should_load_remote_block_patterns', true ) ) {
+		return;
+	}
+
+	if ( ! WP_Theme_JSON_Resolver::theme_has_support() ) {
+		return;
+	}
+
+	$pattern_settings = WP_Theme_JSON_Resolver::get_theme_data()->get_patterns();
+	if ( empty( $pattern_settings ) ) {
+		return;
+	}
+
+	$request         = new WP_REST_Request( 'GET', '/wp/v2/pattern-directory/patterns' );
+	$request['slug'] = implode( ',', $pattern_settings );
+	$response        = rest_do_request( $request );
+	if ( $response->is_error() ) {
+		return;
+	}
+	$patterns          = $response->get_data();
+	$patterns_registry = WP_Block_Patterns_Registry::get_instance();
+	foreach ( $patterns as $pattern ) {
+		$pattern_name = sanitize_title( $pattern['title'] );
+		// Some patterns might be already registered as core patterns with the `core` prefix.
+		$is_registered = $patterns_registry->is_registered( $pattern_name ) || $patterns_registry->is_registered( "core/$pattern_name" );
+		if ( ! $is_registered ) {
+			register_block_pattern( $pattern_name, (array) $pattern );
+		}
+	}
+}
+
+/**
+ * Register any patterns that the active theme may provide under its
+ * `./patterns/` directory. Each pattern is defined as a PHP file and defines
+ * its metadata using plugin-style headers. The minimum required definition is:
+ *
+ *     /**
+ *      * Title: My Pattern
+ *      * Slug: my-theme/my-pattern
+ *      *
+ *
+ * The output of the PHP source corresponds to the content of the pattern, e.g.:
+ *
+ *     <main><p><?php echo "Hello"; ?></p></main>
+ *
+ * If applicable, this will collect from both parent and child theme.
+ *
+ * Other settable fields include:
+ *
+ *   - Description
+ *   - Viewport Width
+ *   - Categories       (comma-separated values)
+ *   - Keywords         (comma-separated values)
+ *   - Block Types      (comma-separated values)
+ *   - Inserter         (yes/no)
+ *
+ * @since 6.0.0
+ * @access private
+ */
+function _register_theme_block_patterns() {
+	$default_headers = array(
+		'title'         => 'Title',
+		'slug'          => 'Slug',
+		'description'   => 'Description',
+		'viewportWidth' => 'Viewport Width',
+		'categories'    => 'Categories',
+		'keywords'      => 'Keywords',
+		'blockTypes'    => 'Block Types',
+		'inserter'      => 'Inserter',
+	);
+
+	/*
+	 * Register patterns for the active theme. If the theme is a child theme,
+	 * let it override any patterns from the parent theme that shares the same slug.
+	 */
+	$themes     = array();
+	$stylesheet = get_stylesheet();
+	$template   = get_template();
+	if ( $stylesheet !== $template ) {
+		$themes[] = wp_get_theme( $stylesheet );
+	}
+	$themes[] = wp_get_theme( $template );
+
+	foreach ( $themes as $theme ) {
+		$dirpath = $theme->get_stylesheet_directory() . '/patterns/';
+		if ( ! is_dir( $dirpath ) || ! is_readable( $dirpath ) ) {
+			continue;
+		}
+		if ( file_exists( $dirpath ) ) {
+			$files = glob( $dirpath . '*.php' );
+			if ( $files ) {
+				foreach ( $files as $file ) {
+					$pattern_data = get_file_data( $file, $default_headers );
+
+					if ( empty( $pattern_data['slug'] ) ) {
+						_doing_it_wrong(
+							'_register_theme_block_patterns',
+							sprintf(
+								/* translators: %s: file name. */
+								__( 'Could not register file "%s" as a block pattern ("Slug" field missing)' ),
+								$file
+							),
+							'6.0.0'
+						);
+						continue;
+					}
+
+					if ( ! preg_match( '/^[A-z0-9\/_-]+$/', $pattern_data['slug'] ) ) {
+						_doing_it_wrong(
+							'_register_theme_block_patterns',
+							sprintf(
+								/* translators: %1s: file name; %2s: slug value found. */
+								__( 'Could not register file "%1$s" as a block pattern (invalid slug "%2$s")' ),
+								$file,
+								$pattern_data['slug']
+							),
+							'6.0.0'
+						);
+					}
+
+					if ( WP_Block_Patterns_Registry::get_instance()->is_registered( $pattern_data['slug'] ) ) {
+						continue;
+					}
+
+					// Title is a required property.
+					if ( ! $pattern_data['title'] ) {
+						_doing_it_wrong(
+							'_register_theme_block_patterns',
+							sprintf(
+								/* translators: %1s: file name; %2s: slug value found. */
+								__( 'Could not register file "%s" as a block pattern ("Title" field missing)' ),
+								$file
+							),
+							'6.0.0'
+						);
+						continue;
+					}
+
+					// For properties of type array, parse data as comma-separated.
+					foreach ( array( 'categories', 'keywords', 'blockTypes' ) as $property ) {
+						if ( ! empty( $pattern_data[ $property ] ) ) {
+							$pattern_data[ $property ] = array_filter(
+								preg_split(
+									'/[\s,]+/',
+									(string) $pattern_data[ $property ]
+								)
+							);
+						} else {
+							unset( $pattern_data[ $property ] );
+						}
+					}
+
+					// Parse properties of type int.
+					foreach ( array( 'viewportWidth' ) as $property ) {
+						if ( ! empty( $pattern_data[ $property ] ) ) {
+							$pattern_data[ $property ] = (int) $pattern_data[ $property ];
+						} else {
+							unset( $pattern_data[ $property ] );
+						}
+					}
+
+					// Parse properties of type bool.
+					foreach ( array( 'inserter' ) as $property ) {
+						if ( ! empty( $pattern_data[ $property ] ) ) {
+							$pattern_data[ $property ] = in_array(
+								strtolower( $pattern_data[ $property ] ),
+								array( 'yes', 'true' ),
+								true
+							);
+						} else {
+							unset( $pattern_data[ $property ] );
+						}
+					}
+
+					// Translate the pattern metadata.
+					$text_domain = $theme->get( 'TextDomain' );
+					//phpcs:ignore WordPress.WP.I18n.NonSingularStringLiteralText, WordPress.WP.I18n.NonSingularStringLiteralContext, WordPress.WP.I18n.NonSingularStringLiteralDomain, WordPress.WP.I18n.LowLevelTranslationFunction
+					$pattern_data['title'] = translate_with_gettext_context( $pattern_data['title'], 'Pattern title', $text_domain );
+					if ( ! empty( $pattern_data['description'] ) ) {
+						//phpcs:ignore WordPress.WP.I18n.NonSingularStringLiteralText, WordPress.WP.I18n.NonSingularStringLiteralContext, WordPress.WP.I18n.NonSingularStringLiteralDomain, WordPress.WP.I18n.LowLevelTranslationFunction
+						$pattern_data['description'] = translate_with_gettext_context( $pattern_data['description'], 'Pattern description', $text_domain );
+					}
+
+					// The actual pattern content is the output of the file.
+					ob_start();
+					include $file;
+					$pattern_data['content'] = ob_get_clean();
+					if ( ! $pattern_data['content'] ) {
+						continue;
+					}
+
+					register_block_pattern( $pattern_data['slug'], $pattern_data );
+				}
+			}
+		}
+	}
+}
+add_action( 'init', '_register_theme_block_patterns' );

src/wp-includes/block-patterns/query-grid-posts.php

@@ -9,7 +9,7 @@
 	'title'      => _x( 'Grid', 'Block pattern title' ),
 	'blockTypes' => array( 'core/query' ),
 	'categories' => array( 'query' ),
-	'content'    => '<!-- wp:query {"query":{"perPage":6,"pages":0,"offset":0,"postType":"post","categoryIds":[],"tagIds":[],"order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"exclude","inherit":false},"displayLayout":{"type":"flex","columns":3}} -->
+	'content'    => '<!-- wp:query {"query":{"perPage":6,"pages":0,"offset":0,"postType":"post","order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"exclude","inherit":false},"displayLayout":{"type":"flex","columns":3}} -->
 					<div class="wp-block-query">
 					<!-- wp:post-template -->
 					<!-- wp:group {"style":{"spacing":{"padding":{"top":"30px","right":"30px","bottom":"30px","left":"30px"}}},"layout":{"inherit":false}} -->

src/wp-includes/block-patterns/query-large-title-posts.php

@@ -10,7 +10,7 @@
 	'blockTypes' => array( 'core/query' ),
 	'categories' => array( 'query' ),
 	'content'    => '<!-- wp:group {"align":"full","style":{"spacing":{"padding":{"top":"100px","right":"100px","bottom":"100px","left":"100px"}},"color":{"text":"#ffffff","background":"#000000"}}} -->
-					<div class="wp-block-group alignfull has-text-color has-background" style="background-color:#000000;color:#ffffff;padding-top:100px;padding-right:100px;padding-bottom:100px;padding-left:100px"><!-- wp:query {"query":{"perPage":3,"pages":0,"offset":0,"postType":"post","categoryIds":[],"tagIds":[],"order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"","inherit":false}} -->
+					<div class="wp-block-group alignfull has-text-color has-background" style="background-color:#000000;color:#ffffff;padding-top:100px;padding-right:100px;padding-bottom:100px;padding-left:100px"><!-- wp:query {"query":{"perPage":3,"pages":0,"offset":0,"postType":"post","order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"","inherit":false}} -->
 					<div class="wp-block-query"><!-- wp:post-template -->
 					<!-- wp:separator {"customColor":"#ffffff","align":"wide","className":"is-style-wide"} -->
 					<hr class="wp-block-separator alignwide has-text-color has-background is-style-wide" style="background-color:#ffffff;color:#ffffff"/>

src/wp-includes/block-patterns/query-medium-posts.php

@@ -9,7 +9,7 @@
 	'title'      => _x( 'Image at left', 'Block pattern title' ),
 	'blockTypes' => array( 'core/query' ),
 	'categories' => array( 'query' ),
-	'content'    => '<!-- wp:query {"query":{"perPage":3,"pages":0,"offset":0,"postType":"post","categoryIds":[],"tagIds":[],"order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"","inherit":false}} -->
+	'content'    => '<!-- wp:query {"query":{"perPage":3,"pages":0,"offset":0,"postType":"post","order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"","inherit":false}} -->
 					<div class="wp-block-query">
 					<!-- wp:post-template -->
 					<!-- wp:columns {"align":"wide"} -->

src/wp-includes/block-patterns/query-offset-posts.php

@@ -12,7 +12,7 @@
 	'content'    => '<!-- wp:group {"style":{"spacing":{"padding":{"top":"30px","right":"30px","bottom":"30px","left":"30px"}}},"layout":{"inherit":false}} -->
 					<div class="wp-block-group" style="padding-top:30px;padding-right:30px;padding-bottom:30px;padding-left:30px"><!-- wp:columns -->
 					<div class="wp-block-columns"><!-- wp:column {"width":"50%"} -->
-					<div class="wp-block-column" style="flex-basis:50%"><!-- wp:query {"query":{"perPage":2,"pages":0,"offset":0,"postType":"post","categoryIds":[],"tagIds":[],"order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"exclude","inherit":false},"displayLayout":{"type":"list"}} -->
+					<div class="wp-block-column" style="flex-basis:50%"><!-- wp:query {"query":{"perPage":2,"pages":0,"offset":0,"postType":"post","order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"exclude","inherit":false},"displayLayout":{"type":"list"}} -->
 					<div class="wp-block-query"><!-- wp:post-template -->
 					<!-- wp:post-featured-image /-->
 					<!-- wp:post-title /-->
@@ -24,7 +24,7 @@
 					<!-- /wp:query --></div>
 					<!-- /wp:column -->
 					<!-- wp:column {"width":"50%"} -->
-					<div class="wp-block-column" style="flex-basis:50%"><!-- wp:query {"query":{"perPage":2,"pages":0,"offset":2,"postType":"post","categoryIds":[],"tagIds":[],"order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"exclude","inherit":false},"displayLayout":{"type":"list"}} -->
+					<div class="wp-block-column" style="flex-basis:50%"><!-- wp:query {"query":{"perPage":2,"pages":0,"offset":2,"postType":"post","order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"exclude","inherit":false},"displayLayout":{"type":"list"}} -->
 					<div class="wp-block-query"><!-- wp:post-template -->
 					<!-- wp:spacer {"height":200} -->
 					<div style="height:200px" aria-hidden="true" class="wp-block-spacer"></div>

src/wp-includes/block-patterns/query-small-posts.php

@@ -9,7 +9,7 @@
 	'title'      => _x( 'Small image and title', 'Block pattern title' ),
 	'blockTypes' => array( 'core/query' ),
 	'categories' => array( 'query' ),
-	'content'    => '<!-- wp:query {"query":{"perPage":3,"pages":0,"offset":0,"postType":"post","categoryIds":[],"tagIds":[],"order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"","inherit":false}} -->
+	'content'    => '<!-- wp:query {"query":{"perPage":3,"pages":0,"offset":0,"postType":"post","order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"","inherit":false}} -->
 					<div class="wp-block-query">
 					<!-- wp:post-template -->
 					<!-- wp:columns {"verticalAlignment":"center"} -->

src/wp-includes/block-patterns/query-standard-posts.php

@@ -9,7 +9,7 @@
 	'title'      => _x( 'Standard', 'Block pattern title' ),
 	'blockTypes' => array( 'core/query' ),
 	'categories' => array( 'query' ),
-	'content'    => '<!-- wp:query {"query":{"perPage":3,"pages":0,"offset":0,"postType":"post","categoryIds":[],"tagIds":[],"order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"","inherit":false}} -->
+	'content'    => '<!-- wp:query {"query":{"perPage":3,"pages":0,"offset":0,"postType":"post","order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"","inherit":false}} -->
 					<div class="wp-block-query">
 					<!-- wp:post-template -->
 					<!-- wp:post-title {"isLink":true} /-->

src/wp-includes/blocks.php

@@ -955,9 +955,8 @@ function do_blocks( $content ) {
  * If do_blocks() needs to remove wpautop() from the `the_content` filter, this re-adds it afterwards,
  * for subsequent `the_content` usage.
  *
- * @access private
- *
  * @since 5.0.0
+ * @access private
  *
  * @param string $content The post content running through this filter.
  * @return string The unmodified content.
@@ -1142,15 +1141,36 @@ function build_query_vars_from_query_block( $block, $page ) {
 			$query['offset']         = ( $per_page * ( $page - 1 ) ) + $offset;
 			$query['posts_per_page'] = $per_page;
 		}
-		if ( ! empty( $block->context['query']['categoryIds'] ) ) {
-			$term_ids              = array_map( 'intval', $block->context['query']['categoryIds'] );
-			$term_ids              = array_filter( $term_ids );
-			$query['category__in'] = $term_ids;
+		// Migrate `categoryIds` and `tagIds` to `tax_query` for backwards compatibility.
+		if ( ! empty( $block->context['query']['categoryIds'] ) || ! empty( $block->context['query']['tagIds'] ) ) {
+			$tax_query = array();
+			if ( ! empty( $block->context['query']['categoryIds'] ) ) {
+				$tax_query[] = array(
+					'taxonomy'         => 'category',
+					'terms'            => array_filter( array_map( 'intval', $block->context['query']['categoryIds'] ) ),
+					'include_children' => false,
+				);
+			}
+			if ( ! empty( $block->context['query']['tagIds'] ) ) {
+				$tax_query[] = array(
+					'taxonomy'         => 'post_tag',
+					'terms'            => array_filter( array_map( 'intval', $block->context['query']['tagIds'] ) ),
+					'include_children' => false,
+				);
+			}
+			$query['tax_query'] = $tax_query;
 		}
-		if ( ! empty( $block->context['query']['tagIds'] ) ) {
-			$term_ids         = array_map( 'intval', $block->context['query']['tagIds'] );
-			$term_ids         = array_filter( $term_ids );
-			$query['tag__in'] = $term_ids;
+		if ( ! empty( $block->context['query']['taxQuery'] ) ) {
+			$query['tax_query'] = array();
+			foreach ( $block->context['query']['taxQuery'] as $taxonomy => $terms ) {
+				if ( is_taxonomy_viewable( $taxonomy ) && ! empty( $terms ) ) {
+					$query['tax_query'][] = array(
+						'taxonomy'         => $taxonomy,
+						'terms'            => array_filter( array_map( 'intval', $terms ) ),
+						'include_children' => false,
+					);
+				}
+			}
 		}
 		if (
 			isset( $block->context['query']['order'] ) &&

src/wp-includes/rest-api.php

@@ -337,6 +337,14 @@ function create_initial_rest_routes() {
 	$controller = new WP_REST_Pattern_Directory_Controller();
 	$controller->register_routes();
 
+	// Block Patterns.
+	$controller = new WP_REST_Block_Patterns_Controller();
+	$controller->register_routes();
+
+	// Block Pattern Categories.
+	$controller = new WP_REST_Block_Pattern_Categories_Controller();
+	$controller->register_routes();
+
 	// Site Health.
 	$site_health = WP_Site_Health::get_instance();
 	$controller  = new WP_REST_Site_Health_Controller( $site_health );