From 0cdd5c506357ef5ca7d44213248fe16751218998 Mon Sep 17 00:00:00 2001
From: Ebrahim Byagowi <ebrahim@gnu.org>
Date: Wed, 27 Jan 2016 23:31:31 +0000
Subject: [PATCH] Make destination URL of a page save configurable

With this, if a gadget put a hidden input named "wpExtraQueryRedirect",
can guide MediaWiki to keep that extra query parameter even after the
save of the page.

Bug: T124986
Change-Id: Ie45d6d80e83298e4c349f1e2dedd4eaa66b7697a
---
 includes/EditPage.php | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/includes/EditPage.php b/includes/EditPage.php
index 5ebb44a763..82fcdcfb83 100644
--- a/includes/EditPage.php
+++ b/includes/EditPage.php
@@ -1420,6 +1420,11 @@ class EditPage {
 			}
 		}
 
+		// "wpExtraQueryRedirect" is a hidden input to modify
+		// after save URL and is not used by actual edit form
+		$request = RequestContext::getMain()->getRequest();
+		$extraQueryRedirect = $request->getVal( 'wpExtraQueryRedirect' );
+
 		switch ( $status->value ) {
 			case self::AS_HOOK_ERROR_EXPECTED:
 			case self::AS_CONTENT_TOO_BIG:
@@ -1443,6 +1448,13 @@ class EditPage {
 
 			case self::AS_SUCCESS_NEW_ARTICLE:
 				$query = $resultDetails['redirect'] ? 'redirect=no' : '';
+				if ( $extraQueryRedirect ) {
+					if ( $query === '' ) {
+						$query = $extraQueryRedirect;
+					} else {
+						$query = $query . '&' . $extraQueryRedirect;
+					}
+				}
 				$anchor = isset( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
 				$wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
 				return false;
@@ -1464,6 +1476,14 @@ class EditPage {
 						$extraQuery = 'redirect=no&' . $extraQuery;
 					}
 				}
+				if ( $extraQueryRedirect ) {
+					if ( $extraQuery === '' ) {
+						$extraQuery = $extraQueryRedirect;
+					} else {
+						$extraQuery = $extraQuery . '&' . $extraQueryRedirect;
+					}
+				}
+
 				$wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
 				return false;
 
-- 
2.20.1