Ticket #52238: 52238.diff

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

@@ -295 +295 @@
                 <select name="<?php echo $id; ?>" id="<?php echo $id; ?>">
                         <option value=""><?php _e( 'Change role to&hellip;' ); ?></option>
                         <?php wp_dropdown_roles(); ?>
+                        <option value="none"><?php echo __( '&mdash; No role for this site &mdash;' ) ?> </option>
                 </select>
                         <?php
                         submit_button( __( 'Change' ), '', $button_id, false );

src/wp-admin/users.php

@@ -114 +114 @@
                 $editable_roles = get_editable_roles();
                 $role           = $_REQUEST['new_role'];
 
+                // Mocking the `none` role so we are able to save it to the database
+                $editable_roles['none'] = array(
+                        'name' => __( '— No role for this site —' ),
+                );
+
                 if ( ! $role || empty( $editable_roles[ $role ] ) ) {
                         wp_die( __( 'Sorry, you are not allowed to give users that role.' ), 403 );
                 }
 
+                if ( 'none' === $role ) {
+                        $role = '';
+                }
+
                 $userids = $_REQUEST['users'];
                 $update  = 'promote';
                 foreach ( $userids as $id ) {