Role/Capability: Introduce the `current_user_can_for_site()` and `user_can_for_site()` functions.

The `current_user_can_for_site()` function is a replacement for `current_user_can_for_blog()` which is now deprecated. `user_can_for_site()` is a renaming of the `user_can_for_blog()` function which was introduced in [59123]. The intention of this change is to prevent the introduction of a new function which uses the old "blog" naming structure.

Props swissspidy, spacedmonkey, flixos90, johnjamesjacoby

Fixes #45197

Built from https://develop.svn.wordpress.org/trunk@59198


git-svn-id: http://core.svn.wordpress.org/trunk@58593 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/capabilities.php

@@ -913,24 +913,23 @@ function current_user_can( $capability, ...$args ) {
  * capabilities such as `edit_post` and `edit_user` are capabilities used by the `map_meta_cap()` function to
  * map to primitive capabilities that a user or role has, such as `edit_posts` and `edit_others_posts`.
  *
+ * This function replaces the current_user_can_for_blog() function.
+ *
  * Example usage:
  *
- *     current_user_can_for_blog( $blog_id, 'edit_posts' );
- *     current_user_can_for_blog( $blog_id, 'edit_post', $post->ID );
- *     current_user_can_for_blog( $blog_id, 'edit_post_meta', $post->ID, $meta_key );
+ *     current_user_can_for_site( $site_id, 'edit_posts' );
+ *     current_user_can_for_site( $site_id, 'edit_post', $post->ID );
+ *     current_user_can_for_site( $site_id, 'edit_post_meta', $post->ID, $meta_key );
  *
- * @since 3.0.0
- * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
- *              by adding it to the function signature.
- * @since 5.8.0 Wraps current_user_can() after switching to blog.
+ * @since 6.7.0
  *
- * @param int    $blog_id    Site ID.
+ * @param int    $site_id    Site ID.
  * @param string $capability Capability name.
  * @param mixed  ...$args    Optional further parameters, typically starting with an object ID.
  * @return bool Whether the user has the given capability.
  */
-function current_user_can_for_blog( $blog_id, $capability, ...$args ) {
-	$switched = is_multisite() ? switch_to_blog( $blog_id ) : false;
+function current_user_can_for_site( $site_id, $capability, ...$args ) {
+	$switched = is_multisite() ? switch_to_blog( $site_id ) : false;
 
 	$can = current_user_can( $capability, ...$args );
 
@@ -1023,19 +1022,19 @@ function user_can( $user, $capability, ...$args ) {
  *
  * Example usage:
  *
- *     user_can_for_blog( $user->ID, $blog_id, 'edit_posts' );
- *     user_can_for_blog( $user->ID, $blog_id, 'edit_post', $post->ID );
- *     user_can_for_blog( $user->ID, $blog_id, 'edit_post_meta', $post->ID, $meta_key );
+ *     user_can_for_site( $user->ID, $site_id, 'edit_posts' );
+ *     user_can_for_site( $user->ID, $site_id, 'edit_post', $post->ID );
+ *     user_can_for_site( $user->ID, $site_id, 'edit_post_meta', $post->ID, $meta_key );
  *
  * @since 6.7.0
  *
  * @param int|WP_User $user       User ID or object.
- * @param int         $blog_id    Site ID.
+ * @param int         $site_id    Site ID.
  * @param string      $capability Capability name.
  * @param mixed       ...$args    Optional further parameters, typically starting with an object ID.
  * @return bool Whether the user has the given capability.
  */
-function user_can_for_blog( $user, $blog_id, $capability, ...$args ) {
+function user_can_for_site( $user, $site_id, $capability, ...$args ) {
 	if ( ! is_object( $user ) ) {
 		$user = get_userdata( $user );
 	}
@@ -1047,11 +1046,11 @@ function user_can_for_blog( $user, $blog_id, $capability, ...$args ) {
 	}
 
 	// Check if the blog ID is valid.
-	if ( ! is_numeric( $blog_id ) || $blog_id <= 0 ) {
+	if ( ! is_numeric( $site_id ) || $site_id <= 0 ) {
 		return false;
 	}
 
-	$switched = is_multisite() ? switch_to_blog( $blog_id ) : false;
+	$switched = is_multisite() ? switch_to_blog( $site_id ) : false;
 
 	$can = user_can( $user->ID, $capability, ...$args );
 

wp-includes/deprecated.php

@@ -6406,3 +6406,21 @@ function wp_create_block_style_variation_instance_name( $block, $variation ) {
 	_deprecated_function( __FUNCTION__, '6.7.0', 'wp_unique_id' );
 	return $variation . '--' . md5( serialize( $block ) );
 }
+
+/**
+ * Returns whether the current user has the specified capability for a given site.
+ *
+ * @since 3.0.0
+ * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
+ *              by adding it to the function signature.
+ * @since 5.8.0 Wraps current_user_can() after switching to blog.
+ * @deprecated 6.7.0 Use current_user_can_for_site() instead.
+ *
+ * @param int    $blog_id    Site ID.
+ * @param string $capability Capability name.
+ * @param mixed  ...$args    Optional further parameters, typically starting with an object ID.
+ * @return bool Whether the user has the given capability.
+ */
+function current_user_can_for_blog( $blog_id, $capability, ...$args ) {
+	return current_user_can_for_site( $blog_id, $capability, ...$args );
+}

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-beta2-59197';
+$wp_version = '6.7-beta2-59198';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.