Changeset 41625 for trunk/src/wp-includes/class-wp-roles.php

Timestamp:

09/27/2017 09:43:59 PM (9 years ago)

Author:

flixos90

Message:

Multisite: Improve initializing available roles when switch sites.

Switching the available roles and the current user's capabilities no longer happens in switch_to_blog() and restore_current_blog(), instead it has been moved to a new function wp_switch_roles_and_user() which is hooked into the site switching process. This allows to improve performance by temporarily unhooking the function when roles and capabilities do not need to be switched.

This change ensures that switching available roles now works closer to switching user capabilities, particularly the changes in [41624]. A new WP_Roles::for_site( $site_id ) method has been introduced, and the WP_Roles::_init() method has been deprecated. It is furthermore possible to retrieve the site ID for which the available roles are currently initialized through a new WP_Roles::get_site_id().

Props johnjamesjacoby, flixos90.
Fixes #38645.

File:

• trunk/src/wp-includes/class-wp-roles.php (modified) (4 diffs)

trunk/src/wp-includes/class-wp-roles.php

@@ -66 +66 @@
 
         /**
+         * The site ID the roles are initialized for.
+         *
+         * @since 4.9.0
+         * @var int
+         */
+        protected $site_id = 0;
+
+        /**
          * Constructor
          *
          * @since 2.0.0
-         */
-        public function __construct() {
-                $this->_init();
+         * @since 4.9.0 The $site_id argument was added.
+         *
+         * @global array $wp_user_roles Used to set the 'roles' property value.
+         *
+         * @param int $site_id Site ID to initialize roles for. Default is the current site.
+         */
+        public function __construct( $site_id = null ) {
+                global $wp_user_roles;
+
+                $this->use_db = empty( $wp_user_roles );
+
+                $this->for_site( $site_id );
         }
 
@@ -98 +115 @@
          *
          * @since 2.1.0
-         *
-         * @global array $wp_user_roles Used to set the 'roles' property value.
+         * @deprecated 4.9.0 Use WP_Roles::for_site()
          */
         protected function _init() {
-                global $wp_user_roles, $wpdb;
-
-                $this->role_key = $wpdb->get_blog_prefix() . 'user_roles';
-                if ( ! empty( $wp_user_roles ) ) {
-                        $this->roles = $wp_user_roles;
-                        $this->use_db = false;
-                } else {
-                        $this->roles = get_option( $this->role_key );
-                }
-
-                if ( empty( $this->roles ) )
-                        return;
-
-                $this->role_objects = array();
-                $this->role_names =  array();
-                foreach ( array_keys( $this->roles ) as $role ) {
-                        $this->role_objects[$role] = new WP_Role( $role, $this->roles[$role]['capabilities'] );
-                        $this->role_names[$role] = $this->roles[$role]['name'];
-                }
-
-                /**
-                 * After the roles have been initialized, allow plugins to add their own roles.
-                 *
-                 * @since 4.7.0
-                 *
-                 * @param WP_Roles $this A reference to the WP_Roles object.
-                 */
-                do_action( 'wp_roles_init', $this );
+                _deprecated_function( __METHOD__, '4.9.0', 'WP_Roles::for_site()' );
+
+                $this->for_site();
         }
 
@@ -139 +130 @@
          *
          * @since 3.5.0
-         * @deprecated 4.7.0 Use new WP_Roles()
+         * @deprecated 4.7.0 Use WP_Roles::for_site()
          */
         public function reinit() {
-                _deprecated_function( __METHOD__, '4.7.0', 'new WP_Roles()' );
-                $this->_init();
+                _deprecated_function( __METHOD__, '4.7.0', 'WP_Roles::for_site()' );
+
+                $this->for_site();
         }
 
@@ -271 +263 @@
                 return isset( $this->role_names[$role] );
         }
+
+        /**
+         * Initializes all of the available roles.
+         *
+         * @since 4.9.0
+         */
+        public function init_roles() {
+                if ( empty( $this->roles ) ) {
+                        return;
+                }
+
+                $this->role_objects = array();
+                $this->role_names =  array();
+                foreach ( array_keys( $this->roles ) as $role ) {
+                        $this->role_objects[ $role ] = new WP_Role( $role, $this->roles[ $role ]['capabilities'] );
+                        $this->role_names[ $role ] = $this->roles[ $role ]['name'];
+                }
+
+                /**
+                 * After the roles have been initialized, allow plugins to add their own roles.
+                 *
+                 * @since 4.7.0
+                 *
+                 * @param WP_Roles $this A reference to the WP_Roles object.
+                 */
+                do_action( 'wp_roles_init', $this );
+        }
+
+        /**
+         * Sets the site to operate on. Defaults to the current site.
+         *
+         * @since 4.9.0
+         *
+         * @global wpdb $wpdb WordPress database abstraction object.
+         *
+         * @param int $site_id Site ID to initialize roles for. Default is the current site.
+         */
+        public function for_site( $site_id = null ) {
+                global $wpdb;
+
+                if ( ! empty( $site_id ) ) {
+                        $this->site_id = absint( $site_id );
+                } else {
+                        $this->site_id = get_current_blog_id();
+                }
+
+                $this->role_key = $wpdb->get_blog_prefix( $this->site_id ) . 'user_roles';
+
+                if ( ! empty( $this->roles ) && ! $this->use_db ) {
+                        return;
+                }
+
+                $this->roles = $this->get_roles_data();
+
+                $this->init_roles();
+        }
+
+        /**
+         * Gets the ID of the site for which roles are currently initialized.
+         *
+         * @since 4.9.0
+         *
+         * @return int Site ID.
+         */
+        public function get_site_id() {
+                return $this->site_id;
+        }
+
+        /**
+         * Gets the available roles data.
+         *
+         * @since 4.9.0
+         *
+         * @global array $wp_user_roles Used to set the 'roles' property value.
+         *
+         * @return array Roles array.
+         */
+        protected function get_roles_data() {
+                global $wp_user_roles;
+
+                if ( ! empty( $wp_user_roles ) ) {
+                        return $wp_user_roles;
+                }
+
+                if ( is_multisite() && $this->site_id != get_current_blog_id() ) {
+                        remove_action( 'switch_blog', 'wp_switch_roles_and_user', 1 );
+
+                        $roles = get_blog_option( $this->site_id, $this->role_key, array() );
+
+                        add_action( 'switch_blog', 'wp_switch_roles_and_user', 1, 2 );
+
+                        return $roles;
+                }
+
+                return get_option( $this->role_key, array() );
+        }
 }