Extension:EditWarning

MediaWiki extensions manual

EditWarning Release status: unmaintained
Implementation	Notify
Description	Displays a warning if user edits a page/section which is currently being edited.
Author(s)	Thomas David (Nemphistalk)
Latest version	0.4 (2011-10-28)
MediaWiki	1.16+
Database changes	Yes
License	GNU General Public License 2.0 or later
Download	GitHub: project page git repository URL [help] commit history Note: No localisation updates are provided by translatewiki.net .
Parameters $EditWarning_Timeout $EditWarning_OnlyEditor
Hooks used AlternateEdit ArticleSave UserLogout ArticleViewHeader OutputPageBeforeHTML
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The EditWarning extension displays a warning if user edits a page/section which is currently being edited.

On pages which are being edited by many users simultaneously, edit conflicts can easily happen. This extension tries to avoid this problem by showing a warning message if the user edits a page that is being edited by other users at the same time. It's very similar to the MoinMoin Wiki warning with the difference that it doesn't lock the page.

 Note: It's not recommended to use this extension if anonymous users are allowed to edit pages, because it ignores anonymous page edits.

I've written this extension for a MediaWiki installation I maintained some time ago. Because I don't maintain it anymore, this extension won't receive any further major improvements or features. Even bugfixes may take some time. Please be patient or send me a patch.

Installation

• Download and place the file(s) in a directory called EditWarning in your extensions/ folder.

• Add the following code at the bottom of your LocalSettings.php:

  require_once "$IP/extensions/EditWarning/EditWarning.php";
  

• Execute the following SQL statements in your database:

CREATE TABLE IF NOT EXISTS editwarning_locks (
  user_id int(10) unsigned NOT NULL,
  user_name varchar(255) NOT NULL,
  article_id int(10) unsigned NOT NULL,
  timestamp int(11) unsigned NOT NULL,
  section int(2) unsigned NOT NULL,
  KEY user_id (user_id),
  KEY article_id (article_id)
) ENGINE=InnoDB;

ALTER TABLE editwarning_locks
  ADD CONSTRAINT editwarning_locks_ibfk_1 FOREIGN KEY (user_id) REFERENCES user (user_id) ON DELETE CASCADE ON UPDATE CASCADE,
  ADD CONSTRAINT editwarning_locks_ibfk_2 FOREIGN KEY (article_id) REFERENCES page (page_id) ON DELETE CASCADE ON UPDATE CASCADE;

• Configure as required
•  Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

Configuration

• The default timeout is set to 10 minutes. If you want to change this setting, add this line to your LocalSettings.php (Note: The value is the number of minutes):

$EditWarning_Timeout = 5;

• The extension hides everything except the editor area (see screenshots). If you don't like this behavior, add this line to your LocalSettings.php:

$EditWarning_OnlyEditor = "false";

Upgrade from 0.3

See the UPGRADE file.

Known Issues

• The extension can only recognize the cancel of page editing if the user uses the "Cancel" button. Otherwise the warning will be showed until the timeout (default 10 minutes).
• When a user tries to edit a page that is already edited by another user and she/he sees a blank page or a page with "Fatal error:Call to undefined function:bcdiv()" you have to install the php module "bcmath".

See also

• The Ajax Show Editors extension