Ticket #40702: 40702-localize.diff

src/wp-admin/index.php

@@ -15 +15 @@
 wp_dashboard_setup();
 
 wp_enqueue_script( 'dashboard' );
-wp_localize_script( 'dashboard', 'communityEventsData', wp_get_community_events_script_data() );
 
 if ( current_user_can( 'edit_theme_options' ) )
         wp_enqueue_script( 'customize-loader' );

src/wp-admin/network/index.php

@@ -54 +54 @@
 wp_dashboard_setup();
 
 wp_enqueue_script( 'dashboard' );
-wp_localize_script( 'dashboard', 'communityEventsData', wp_get_community_events_script_data() );
 wp_enqueue_script( 'plugin-install' );
 add_thickbox();
 

src/wp-includes/script-loader.php

@@ -47 +47 @@
  */
 function wp_default_scripts( &$scripts ) {
         include( ABSPATH . WPINC . '/version.php' ); // include an unmodified $wp_version
+        global $pagenow;
 
         $develop_src = false !== strpos( $wp_version, '-src' );
 
@@ -733 +734 @@
                 ) );
 
                 $scripts->add( 'dashboard', "/wp-admin/js/dashboard$suffix.js", array( 'jquery', 'admin-comments', 'postbox', 'wp-util', 'wp-a11y' ), false, 1 );
+                /*
+                 * Only localize the script on the Network Dashboard and single-site
+                 * Dashboard screens, because wp_get_community_events_script_data() is
+                 * too expensive to call on every page load.
+                 */
+                if ( 'index.php' === $pagenow ) {
+                        require_once( ABSPATH . 'wp-admin/includes/dashboard.php' );
+                        $scripts->localize( 'dashboard', 'communityEventsData', wp_get_community_events_script_data() );
+                }
 
                 $scripts->add( 'list-revisions', "/wp-includes/js/wp-list-revisions$suffix.js" );