Extension:WhoIsWatching

The WhoIsWatching extension allows to find out who is watching a particular page, and add others to watchlist for that page

Rationale
Even though this notion goes against Wikipedia and Wikimedia privacy policy, some wikis may actually like to see which of its users are watching particular pages. This extension provides just such an interface at the bottom of every page. Additionally, this extension has an option to allow any user to add any page to any other user's watch list.

Additional Configuration
You can simply start using the extension without changing anything else. The only additional configuration that is currently possible for the extension defines how to display the names of the users watching the pages. In SpecialWhoIsWatching.php, there is As the comment implies, depending on the value of this variable, you can display either the real names of the watching users or their wiki usernames. The reason some wiki's may want to switch over to the 'UserName' mode is if they do not require their members to have a valid real name.

Another configurable option in the extension is the ability to switch on/off the option to allow any user to add any page to any other user's watch list. This is done in SpecialWhoIsWatching.php, where there is

It is also possible to only display the count of watching people if the count is greater than zero. This is done in SpecialWhoIsWatching.php, where there is Finally, newer versions of this extension, while we attempt to be backward compatible, allow you to use permissions instead of global variables. By default, users in the sysop group have permission to see page watchers and add pages to anyone's watchlist. You can grant these permissions to logged in users, too, or any group you think needs it.

Known Issues
The first time after a you submit a request to remove a page from the users watchlist, the user is still shown on the form. To get around this it is disabled and displayed with a red strikethrough.

(There maybe a better way to address this, patches welcome!)

Revisions

 * 0.12.1 - April 15, 2017
 * Deprecated PHP entry point was removed.

Incompatibilites:
 * 0.12.0 - May 22, 2016
 * Requires at least MediaWiki 1.26


 * If you've made changes to the message displayed at the bottom of the page in MediaWiki:number_of_watching_users_pageview, you'll need to see if it matches what is in MediaWiki:whoiswatchingpageview on your wiki.


 * Note the use of permissions is preferred to globals to allow access to the Special Page

Other Changes:
 * Use extension.json


 * Remove .i18n.php stub.


 * Add rights so that we can use those instead of globals to control access:
 * addpagetoanywatchlist: gets to use the special page to add users.
 * seepagewatchers: gets to see the watchers.


 * Clean up WhoIsWatching::execute method:
 * Use fewer globals. Use GlobalVarConfig where possible.
 * Use protected methods for various parts of the execution path.
 * Add stub (WhoIsWatching::eNotifUser) to later notify editors when their watchlists are changed.
 * Add stub (WhoIsWatching::uiNotifyUser) to later provide better feedback to users of this extension.
 * Instead of listing out every user to choose from, provide autocomplete for user selection.
 * Instead of showing a confusing "usage" message, provide an autocomplete input box so that the user can select a page to inspect.
 * Provide slightly better error messages.
 * Refactor to make code more readable.


 * Adapted to changes in core MediaWiki since 1.25:
 * Moved $wgPageShowWatchingUsers which was removed from core in 1.25 to $whoiswathing_showwatchingusers
 * Since the message had to be changed anyway, moved the message from number_of_watching_users_pageview to whoiswatchingpageview
 * Remove use of sprintf for i18n construction.


 * 0.11.0 - April 1, 2014
 * I18n was migrated to use json files.


 * 0.10.0


 * 0.9.0 - October 6, 2008
 * Fixed the extension instantiation to work across MW versions
 * Fixed the feature that displays count of users if zero


 * 0.8.0 - September 29, 2008
 * optionally display a count of 0 watching users (contributed by user:Djomp)


 * 0.7.0 - September 5, 2008
 * added descriptionmsg, change special page alias loading method; removed obsolete code (by user:siebrand)


 * 0.6.0 - June 6, 2008
 * Optionally disable the feature to make other users watch the page.


 * 0.5.0 - May 12, 2008
 * Better handling of user names


 * 0.4.0 - December 27, 2007
 * new feature - add other users to the list of people watching the page
 * sort the list of people watching the page
 * minor bug fix on listing which page the information is pertaining to when the page is a category


 * 0.3.0 - November 25, 2007
 * More standard way to load i18n messages (resolve bug about "Call to undefined function wfLoadExtensionMessages")


 * 0.2.0 - November 23, 2007


 * 0.1.0 - October 12, 2007
 * Initial publication.