Merge "Revert "Use display name in category page subheadings if provided""

[lhc/web/wiklou.git] / includes / actions / RollbackAction.php

diff --git a/includes/actions/RollbackAction.php b/includes/actions/RollbackAction.php
index 3e760fd..aa2858d 100644 (file)
--- a/includes/actions/RollbackAction.php
+++ b/includes/actions/RollbackAction.php
@@ -54,9 +54,12 @@ class RollbackAction extends FormlessAction {
                $user = $this->getUser();
                $from = $request->getVal( 'from' );
                $rev = $this->page->getRevision();
-               if ( $from === null || $from === '' ) {
+               if ( $from === null ) {
                        throw new ErrorPageError( 'rollbackfailed', 'rollback-missingparam' );
                }
+               if ( !$rev ) {
+                       throw new ErrorPageError( 'rollbackfailed', 'rollback-missingrevision' );
+               }
                if ( $from !== $rev->getUserText() ) {
                        throw new ErrorPageError( 'rollbackfailed', 'alreadyrolled', [
                                $this->getTitle()->getPrefixedText(),