Backport: Navigation Post Edit Link (from #4657)

src/wp-includes/link-template.php

@@ -1438,6 +1438,8 @@ function get_preview_post_link( $post = null, $query_args = array(), $preview_li
  * pages, posts, attachments, revisions, global styles, templates, and template parts.
  *
  * @since 2.3.0
+ * @since 6.3.0 Adds custom link for wp_navigation post types.
+ *              Adds custom links for wp_template_part and wp_template post types.
  *
  * @param int|WP_Post $post    Optional. Post ID or post object. Default is the global `$post`.
  * @param string      $context Optional. How to output the '&' character. Default '&'.
@@ -1474,6 +1476,8 @@ function get_edit_post_link( $post = 0, $context = 'display' ) {
 	if ( 'wp_template' === $post->post_type || 'wp_template_part' === $post->post_type ) {
 		$slug = urlencode( get_stylesheet() . '//' . $post->post_name );
 		$link = admin_url( sprintf( $post_type_object->_edit_link, $post->post_type, $slug ) );
+	} elseif ( 'wp_navigation' === $post->post_type ) {
+		$link = admin_url( sprintf( $post_type_object->_edit_link, (string) $post->ID ) );
 	} elseif ( $post_type_object->_edit_link ) {
 		$link = admin_url( sprintf( $post_type_object->_edit_link . $action, $post->ID ) );
 	}

src/wp-includes/post.php

@@ -491,6 +491,14 @@ function create_initial_post_types() {
 		)
 	);
 
+	$navigation_post_edit_link = 'site-editor.php?' . build_query(
+		array(
+			'postId'   => '%s',
+			'postType' => 'wp_navigation',
+			'canvas'   => 'edit',
+		)
+	);
+
 	register_post_type(
 		'wp_navigation',
 		array(
@@ -517,6 +525,7 @@ function create_initial_post_types() {
 			'description'           => __( 'Navigation menus that can be inserted into your site.' ),
 			'public'                => false,
 			'_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
+			'_edit_link'            => $navigation_post_edit_link, /* internal use only. don't use this when registering your own post type. */
 			'has_archive'           => false,
 			'show_ui'               => true,
 			'show_in_menu'          => false,

tests/phpunit/tests/link/getEditPostLink.php

@@ -131,4 +131,29 @@ public function test_get_edit_post_link_for_wp_template_part_post_type() {
 		$this->assertSame( $link_default_context, get_edit_post_link( $template_part_post ), 'Second argument `$context` has a default context of `"display"`.' );
 		$this->assertSame( $link_custom_context, get_edit_post_link( $template_part_post, 'something-else' ), 'Pass non-default value in second argument.' );
 	}
+
+	/**
+	 * Tests getting the edit post link for a wp_navigation post type.
+	 *
+	 * @ticket 58589
+	 * */
+	public function test_get_edit_post_link_for_wp_navigation_post_type() {
+		$navigation_post = self::factory()->post->create_and_get(
+			array(
+				'post_type'    => 'wp_navigation',
+				'post_name'    => 'my_navigation',
+				'post_title'   => 'My Navigation',
+				'post_content' => '<!-- wp:navigation-link {"label":"WordPress","type":"custom","url":"http://www.wordpress.org/","kind":"custom"} /-->',
+				'post_excerpt' => 'Description of my Navigation',
+			)
+		);
+
+		$post_type_object = get_post_type_object( $navigation_post->post_type );
+
+		$link_default_context = admin_url( sprintf( $post_type_object->_edit_link, $navigation_post->ID ) );
+		$link_custom_context  = admin_url( sprintf( $post_type_object->_edit_link, $navigation_post->ID ) );
+
+		$this->assertSame( $link_default_context, get_edit_post_link( $navigation_post ), 'Second argument `$context` has a default context of `"display"`.' );
+		$this->assertSame( $link_custom_context, get_edit_post_link( $navigation_post, 'something-else' ), 'Pass non-default value in second argument.' );
+	}
 }