Ticket #37376: 37376.2.patch

src/wp-admin/edit-form-advanced.php

@@ -113 +113 @@
 
 $preview_url = get_preview_post_link( $post );
 
-$viewable = is_post_type_viewable( $post_type_object );
+$viewable = is_post_type_viewable( $post_type_object ) && $post_type_object->has_single;
 
 if ( $viewable ) {
 

src/wp-admin/includes/class-wp-posts-list-table.php

@@ -1580 +1580 @@
                         }
                 }
 
-                if ( is_post_type_viewable( $post_type_object ) ) {
+                if ( is_post_type_viewable( $post_type_object ) && $post_type_object->has_single ) {
                         if ( in_array( $post->post_status, array( 'pending', 'draft', 'future' ), true ) ) {
                                 if ( $can_edit_post ) {
                                         $preview_link    = get_preview_post_link( $post );

src/wp-admin/includes/meta-boxes.php

@@ -62 +62 @@
                 </div>
 
                 <?php
-                if ( is_post_type_viewable( $post_type_object ) ) :
+                if ( is_post_type_viewable( $post_type_object ) && $post_type_object->has_single ) :
                         ?>
                         <div id="preview-action">
                                 <?php

src/wp-includes/class-wp-post-type.php

@@ -247 +247 @@
         public $has_archive = false;
 
         /**
+         * Whether there should be post type singles.
+         *
+         * Will generate the proper rewrite rules if $rewrite is enabled. Default true.
+         *
+         * @since 6.9.0
+         * @var bool $has_single
+         */
+        public $has_single = true;
+
+        /**
          * Sets the query_var key for this post type.
          *
          * Defaults to $post_type key. If false, a post type cannot be loaded at `?{query_var}={post_slug}`.
@@ -546 +556 @@
                         'register_meta_box_cb'            => null,
                         'taxonomies'                      => array(),
                         'has_archive'                     => false,
+                        'has_single'                      => true,
                         'rewrite'                         => true,
                         'query_var'                       => true,
                         'can_export'                      => true,
@@ -716 +727 @@
                 }
 
                 if ( false !== $this->rewrite && ( is_admin() || get_option( 'permalink_structure' ) ) ) {
-                        if ( $this->hierarchical ) {
-                                add_rewrite_tag( "%$this->name%", '(.+?)', $this->query_var ? "{$this->query_var}=" : "post_type=$this->name&pagename=" );
-                        } else {
-                                add_rewrite_tag( "%$this->name%", '([^/]+)', $this->query_var ? "{$this->query_var}=" : "post_type=$this->name&name=" );
+                        if ( $this->has_single ) {
+                                if ( $this->hierarchical ) {
+                                        add_rewrite_tag( "%$this->name%", '(.+?)', $this->query_var ? "{$this->query_var}=" : "post_type=$this->name&pagename=" );
+                                } else {
+                                        add_rewrite_tag( "%$this->name%", '([^/]+)', $this->query_var ? "{$this->query_var}=" : "post_type=$this->name&name=" );
+                                }
                         }
 
                         if ( $this->has_archive ) {

src/wp-includes/link-template.php

@@ -319 +319 @@
  * @param int|WP_Post $post      Optional. Post ID or post object. Default is the global `$post`.
  * @param bool        $leavename Optional. Whether to keep post name. Default false.
  * @param bool        $sample    Optional. Is it a sample permalink. Default false.
- * @return string|false The post permalink URL. False if the post does not exist.
+ * @return string|false The post permalink URL. False if the post does not exist or has no single.
  */
 function get_post_permalink( $post = 0, $leavename = false, $sample = false ) {
         global $wp_rewrite;
@@ -332 +332 @@
 
         $post_link = $wp_rewrite->get_extra_permastruct( $post->post_type );
 
-        $slug = $post->post_name;
-
         $force_plain_link = wp_force_plain_post_permalink( $post );
 
         $post_type = get_post_type_object( $post->post_type );
 
+        if ( ! $post_type->has_single ) {
+                return false;
+        }
+
+        $slug = $post->post_name;
+
         if ( $post_type->hierarchical ) {
                 $slug = get_page_uri( $post );
         }
@@ -1413 +1417 @@
         }
 
         $post_type_object = get_post_type_object( $post->post_type );
-        if ( is_post_type_viewable( $post_type_object ) ) {
+        if ( is_post_type_viewable( $post_type_object ) && $post_type_object->has_single ) {
                 if ( ! $preview_link ) {
                         $preview_link = set_url_scheme( get_permalink( $post ) );
                 }
@@ -4187 +4191 @@
         if ( ! empty( $post_id ) ) {
                 $post_type = get_post_type_object( $post->post_type );
 
+                if ( false === $post_type->has_single ) {
+                        return '';
+                }
+
                 if ( 'page' === $post->post_type
                         && 'page' === get_option( 'show_on_front' ) && (int) get_option( 'page_on_front' ) === $post->ID
                 ) {

src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php

@@ -669 +669 @@
                 $data     = $this->prepare_item_for_response( $post, $request );
                 $response = rest_ensure_response( $data );
 
-                if ( is_post_type_viewable( get_post_type_object( $post->post_type ) ) ) {
+                $post_type_object = get_post_type_object( $post->post_type );
+                if ( is_post_type_viewable( $post_type_object ) && $post_type_object->has_single ) {
                         $response->link_header( 'alternate', get_permalink( $post->ID ), array( 'type' => 'text/html' ) );
                 }
 
@@ -2115 +2116 @@
                 }
 
                 $post_type_obj = get_post_type_object( $post->post_type );
-                if ( is_post_type_viewable( $post_type_obj ) && $post_type_obj->public ) {
+                if ( is_post_type_viewable( $post_type_obj ) && $post_type_obj->public && $post_type_obj->has_single ) {
                         $permalink_template_requested = rest_is_field_included( 'permalink_template', $fields );
                         $generated_slug_requested     = rest_is_field_included( 'generated_slug', $fields );
 
@@ -2507 +2508 @@
                 );
 
                 $post_type_obj = get_post_type_object( $this->post_type );
-                if ( is_post_type_viewable( $post_type_obj ) && $post_type_obj->public ) {
+                if ( is_post_type_viewable( $post_type_obj ) && $post_type_obj->public && $post_type_obj->has_single ) {
                         $schema['properties']['permalink_template'] = array(
                                 'description' => __( 'Permalink template for the post.' ),
                                 'type'        => 'string',

src/wp-includes/sitemaps/providers/class-wp-sitemaps-posts.php

@@ -37 +37 @@
                 $post_types = get_post_types( array( 'public' => true ), 'objects' );
                 unset( $post_types['attachment'] );
 
-                $post_types = array_filter( $post_types, 'is_post_type_viewable' );
+                $post_types = array_filter(
+                        $post_types,
+                        static function ( $post_type ) {
+                                return is_post_type_viewable( $post_type ) && $post_type->has_single;
+                        }
+                );
 
                 /**
                  * Filters the list of post object sub types available within the sitemap.