Merge pull request #43 from jimmitjoo/master

Make it possible to enable Gutenberg editor for custom post types

framework/Objects/Post_Type.php

@@ -59,6 +59,7 @@ abstract class Post_Type {
 
 	const SUPPORTS_TITLE          = 'title';
 	const SUPPORTS_EDITOR         = 'editor';
+	const SUPPORTS_GUTENBERG      = self::SUPPORTS_EDITOR;
 	const SUPPORTS_AUTHOR         = 'author';
 	const SUPPORTS_FEATURED_IMAGE = 'thumbnail';
 	const SUPPORTS_EXCERPT        = 'excerpt';
@@ -107,6 +108,15 @@ abstract class Post_Type {
 	 */
 	protected $is_hierarchical = false;
 
+	/**
+	 * Ability to display the CPT in the REST API
+	 * Please be aware that this enable the CPT to use Gutenberg if supporting editor in WP 5.0 and up
+	 * affect: show_in_rest
+	 *
+	 * @var boolean
+	 */
+	protected $has_rest_api = false;
+
 	/**
 	 * Specify where to redirect singular post type page
 	 * IF has_singular == false AND is_searchable == true THEN we need to redirect page from search results to some other page
@@ -134,7 +144,7 @@ abstract class Post_Type {
 
 	/**
 	 * Admin menu vertical position
-	 * Be very carefull and do not add more than 5 Post Types to same number!
+	 * Be very careful and do not add more than 5 Post Types to same number!
 	 * affect: menu_position
 	 *
 	 * @var integer
@@ -264,6 +274,11 @@ public function register() {
 		);
 		$labels = array_merge( $labels, $this->labels );
 
+		// If we should support gutenberg, we need to enable the rest api.
+		if ( self::SUPPORTS_GUTENBERG === 'editor' && ! $this->has_rest_api ) {
+			$this->has_rest_api = true;
+		}
+
 		$args = array(
 			'labels'              => $labels,
 			'hierarchical'        => $this->is_hierarchical,
@@ -283,6 +298,7 @@ public function register() {
 				'with_front' => ( ! $this->rewrite_singular || $this->redirect ),
 			),
 			'query_var'           => $this->query_var,
+			'show_in_rest'        => $this->has_rest_api,
 		);
 
 		if ( ! empty( $this->taxonomies ) && is_array( $this->taxonomies ) ) {