From mediawiki.org
MediaWiki extensions manual
Release status: beta
Implementation Tag
Description Draws Gantt charts inside wiki articles.
Author(s) • Extension code and fixes by Maciej "Nux" Jaros,

• JSGantt by Shlomy Gantz,

• Xaprb JavaScript date formatting by Baron Schwartz
Latest version 0.7.0 (2023-04-16)
License BSD 2-clause "Simplified" License
mostly you'll want to change "$wgJSGanttConfig" (see "JSWikiGantt.config.php" for details)

The JSWikiGantt extension aims to allow adding Gantt charts (diagrams) to wiki pages without the need of exporting diagrams to PNG.

This is achieved by allowing users to add simple XML definition of diagrams in <jsgantt> tag. Currently only one diagram per page is allowed (which is due to the limitations of the original JSGantt).

This extension is based on JSGantt project started by Shlomy Gantz and Xaprb JavaScript date formatting by Baron Schwartz. See jsgantt.js and date-functions.js for licensing details of these modules.


To add a diagram to a page, simply add a <jsgantt> tag with <task> tags inside it (described below).

The <jsgantt> tag can have only one attribute:

if set to 1, your tasks will be automatically linked based on the task id (very useful if you use task ids from your bug tracking software). Remember to set $wgJSGanttConfig['TasksAutoLink'] in JSWikiGantt.config.php if you use this. The default state of autolinking is set with the $wgJSGanttConfig['AutoLinks'] variable.

Tasks tags[edit]

Tags that can be used inside the <task> tag are described below.

Tag name required? example value description
pID yes 10 a task id
pName yes Heal the world a task name/title
pStart yes/no 2011-01-01 ISO style date when this task should be started; not required for groups
pEnd yes/no 2011-12-31 ISO style date when this task should end; not required for groups
pColor yes 00FF00 a color of this task on a diagram (color of a bar that is on the right side of a diagram)
pLink no http://world.peace/for-dummies URL that can e.g. point to a description of a task (omit if you use autolinks to e.g. point to your bugzilla/flyspray or whatever bug killer you use)
pMile no 0 milestone number
pRes no Mr. Healer resource name (e.g. developer that is assigned to this task)
pComp yes/no 0 task completeness percentage (0-100); not required for groups
pGroup no 0 if set to 1, this is a grouping task (use this task id as other tasks' parent to make them grouped by this task)
pParent no 0 id of a grouping task that is a parent of this task
pOpen no 1 this is only meaningful for groups - if set to 1, this group will be closed by default (subtasks will be hidden)
pDepend no 11 id of a task that this tasks depends on (will be indicated by an arrow)

Note. You might actually skip some required values if you are putting tags directly in your article (loading diagram from an external article is not advised anyway - left for backward compatibility).


Rendering of the code

Example code:

	<pName>WCF Changes</pName>
	<pName>Move to WCF from remoting</pName>
	<pName>add Auditing</pName>

Diagram options[edit]

As of 0.6.0 you can set some extra Gantt options from MediaWiki code e.g.:

<jsgantt option-caption-type="Complete" option-show-resource="1" option-show-duration="1">

Those options allow you to enable features for certain Gantt diagram without changing the configuration of the extension.

Available options[edit]

All of the available options are:

  • option-show-responsible - show responsible column (defaults to 0 - hidden)
  • option-show-duration - show duration column (defaults to 0 - hidden)
  • option-show-precent-complete - show percent complete column (defaults to 0 - hidden)
  • option-show-start-date - show start date column (defaults to 0 - hidden)
  • option-show-end-date - show end date column (defaults to 0 - hidden)
  • option-caption-type - task caption (right side annotation) type. Available types: None, Caption, Resource (default), Duration, Complete.

Using options in MediaWiki 1.16[edit]

Note! Those options will NOT work in MediaWiki 1.16 or lower. You need to patch includes/Sanitizer.php by changing:

$attrib = '[A-Za-z0-9]';


$attrib = '[A-Za-z0-9\-]';


  1. Download, extract and place the files them under $IP /extensions/JSWikiGantt
  2. At the end of LocalSettings.php , add:
    require_once "$IP/extensions/JSWikiGantt/JSWikiGantt.php";
  3. Installation can now be verified through Special:Version on your wiki
  4. If you use apache's mod_rewrite to beautify your wiki's URLs you need to add a RewriteCond to apache's config to exclude the path to your JSWikiGantt installation from rewriting. Example: RewriteCond %{REQUEST_URI} !^/YOUR_WIKI_PATH/extensions/(JSWikiGantt|MORE_EXTENSIONS_THAT_NEED_TO_LOAD_JS-FILES_FROM_THEIR_PATH)/

See also[edit]