Add: Template types to the patterns API.

Backports https://github.com/WordPress/gutenberg/pull/45814 into the core.
This commit adds a new templateType property to the patterns registration API.
This property allows a pattern to specify which template it makes sense on, e.g.: 404, single-post, single-product, category.

Props youknowriad, ntsekouras, 
spacedmonkey.
Built from https://develop.svn.wordpress.org/trunk@55168


git-svn-id: http://core.svn.wordpress.org/trunk@54701 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/block-patterns.php

@@ -302,6 +302,7 @@ function _register_remote_theme_patterns() {
  *   - Keywords         (comma-separated values)
  *   - Block Types      (comma-separated values)
  *   - Post Types       (comma-separated values)
+ *   - Template Types   (comma-separated values)
  *   - Inserter         (yes/no)
  *
  * @since 6.0.0
@@ -318,6 +319,7 @@ function _register_theme_block_patterns() {
 		'blockTypes'    => 'Block Types',
 		'postTypes'     => 'Post Types',
 		'inserter'      => 'Inserter',
+		'templateTypes' => 'Template Types',
 	);
 
 	/*
@@ -388,7 +390,7 @@ function _register_theme_block_patterns() {
 					}
 
 					// For properties of type array, parse data as comma-separated.
-					foreach ( array( 'categories', 'keywords', 'blockTypes', 'postTypes' ) as $property ) {
+					foreach ( array( 'categories', 'keywords', 'blockTypes', 'postTypes', 'templateTypes' ) as $property ) {
 						if ( ! empty( $pattern_data[ $property ] ) ) {
 							$pattern_data[ $property ] = array_filter(
 								preg_split(

wp-includes/rest-api/endpoints/class-wp-rest-block-patterns-controller.php

@@ -173,6 +173,7 @@ class WP_REST_Block_Patterns_Controller extends WP_REST_Controller {
 			'keywords'      => 'keywords',
 			'content'       => 'content',
 			'inserter'      => 'inserter',
+			'templateTypes' => 'template_types',
 		);
 		$data   = array();
 		foreach ( $keys as $item_key => $rest_key ) {
@@ -248,6 +249,12 @@ class WP_REST_Block_Patterns_Controller extends WP_REST_Controller {
 					'readonly'    => true,
 					'context'     => array( 'view', 'edit', 'embed' ),
 				),
+				'template_types' => array(
+					'description' => __( 'An array of template types where the pattern fits.' ),
+					'type'        => 'array',
+					'readonly'    => true,
+					'context'     => array( 'view', 'edit', 'embed' ),
+				),
 				'content'        => array(
 					'description' => __( 'The pattern content.' ),
 					'type'        => 'string',

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.2-alpha-55167';
+$wp_version = '6.2-alpha-55168';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.