Editor: Universalize functions for checking block editor status.

`use_block_editor_for_post_type` and `use_block_editor_for_post` can be very useful in more contexts than wp-admin, especially when a site is in transition. For example, you may want to do things on init that are different.

Neither function depends on other functions that are available only in wp-admin (other than use_block_editor_for_post() relying on use_block_editor_for_post_type() and an admin-referrer check that's historically gated by a query variable and now also gated by is_admin), therefore  moving them to wp-includes seems both feasible and beneficial

Props ethitter, jorbin.
Fixes #51819.


Built from https://develop.svn.wordpress.org/trunk@53559


git-svn-id: http://core.svn.wordpress.org/trunk@53148 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/post.php

@@ -2147,76 +2147,6 @@ function taxonomy_meta_box_sanitize_cb_input( $taxonomy, $terms ) {
 	return $clean_terms;
 }
 
-/**
- * Returns whether the post can be edited in the block editor.
- *
- * @since 5.0.0
- *
- * @param int|WP_Post $post Post ID or WP_Post object.
- * @return bool Whether the post can be edited in the block editor.
- */
-function use_block_editor_for_post( $post ) {
-	$post = get_post( $post );
-
-	if ( ! $post ) {
-		return false;
-	}
-
-	// We're in the meta box loader, so don't use the block editor.
-	if ( isset( $_GET['meta-box-loader'] ) ) {
-		check_admin_referer( 'meta-box-loader', 'meta-box-loader-nonce' );
-		return false;
-	}
-
-	$use_block_editor = use_block_editor_for_post_type( $post->post_type );
-
-	/**
-	 * Filters whether a post is able to be edited in the block editor.
-	 *
-	 * @since 5.0.0
-	 *
-	 * @param bool    $use_block_editor Whether the post can be edited or not.
-	 * @param WP_Post $post             The post being checked.
-	 */
-	return apply_filters( 'use_block_editor_for_post', $use_block_editor, $post );
-}
-
-/**
- * Returns whether a post type is compatible with the block editor.
- *
- * The block editor depends on the REST API, and if the post type is not shown in the
- * REST API, then it won't work with the block editor.
- *
- * @since 5.0.0
- *
- * @param string $post_type The post type.
- * @return bool Whether the post type can be edited with the block editor.
- */
-function use_block_editor_for_post_type( $post_type ) {
-	if ( ! post_type_exists( $post_type ) ) {
-		return false;
-	}
-
-	if ( ! post_type_supports( $post_type, 'editor' ) ) {
-		return false;
-	}
-
-	$post_type_object = get_post_type_object( $post_type );
-	if ( $post_type_object && ! $post_type_object->show_in_rest ) {
-		return false;
-	}
-
-	/**
-	 * Filters whether a post is able to be edited in the block editor.
-	 *
-	 * @since 5.0.0
-	 *
-	 * @param bool   $use_block_editor  Whether the post type can be edited or not. Default true.
-	 * @param string $post_type         The post type being checked.
-	 */
-	return apply_filters( 'use_block_editor_for_post_type', true, $post_type );
-}
-
 /**
  * Prepares server-registered blocks for the block editor.
  *

wp-includes/post.php

@@ -8106,3 +8106,75 @@ function wp_get_original_image_url( $attachment_id ) {
 function wp_untrash_post_set_previous_status( $new_status, $post_id, $previous_status ) {
 	return $previous_status;
 }
+
+/**
+ * Returns whether the post can be edited in the block editor.
+ *
+ * @since 5.0.0
+ * @since 6.1.0 Moved to wp-includes from wp-admin.
+ *
+ * @param int|WP_Post $post Post ID or WP_Post object.
+ * @return bool Whether the post can be edited in the block editor.
+ */
+function use_block_editor_for_post( $post ) {
+	$post = get_post( $post );
+
+	if ( ! $post ) {
+		return false;
+	}
+
+	// We're in the meta box loader, so don't use the block editor.
+	if ( is_admin() && isset( $_GET['meta-box-loader'] ) ) {
+		check_admin_referer( 'meta-box-loader', 'meta-box-loader-nonce' );
+		return false;
+	}
+
+	$use_block_editor = use_block_editor_for_post_type( $post->post_type );
+
+	/**
+	 * Filters whether a post is able to be edited in the block editor.
+	 *
+	 * @since 5.0.0
+	 *
+	 * @param bool    $use_block_editor Whether the post can be edited or not.
+	 * @param WP_Post $post             The post being checked.
+	 */
+	return apply_filters( 'use_block_editor_for_post', $use_block_editor, $post );
+}
+
+/**
+ * Returns whether a post type is compatible with the block editor.
+ *
+ * The block editor depends on the REST API, and if the post type is not shown in the
+ * REST API, then it won't work with the block editor.
+ *
+ * @since 5.0.0
+ * @since 6.1.0 Moved to wp-includes from wp-admin.
+ *
+ * @param string $post_type The post type.
+ * @return bool Whether the post type can be edited with the block editor.
+ */
+function use_block_editor_for_post_type( $post_type ) {
+	if ( ! post_type_exists( $post_type ) ) {
+		return false;
+	}
+
+	if ( ! post_type_supports( $post_type, 'editor' ) ) {
+		return false;
+	}
+
+	$post_type_object = get_post_type_object( $post_type );
+	if ( $post_type_object && ! $post_type_object->show_in_rest ) {
+		return false;
+	}
+
+	/**
+	 * Filters whether a post is able to be edited in the block editor.
+	 *
+	 * @since 5.0.0
+	 *
+	 * @param bool   $use_block_editor  Whether the post type can be edited or not. Default true.
+	 * @param string $post_type         The post type being checked.
+	 */
+	return apply_filters( 'use_block_editor_for_post_type', true, $post_type );
+}

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.1-alpha-53558';
+$wp_version = '6.1-alpha-53559';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.