Plugin types

The M in Moodle stands for modular. The easiest and most maintainable way to add new functionality to Moodle is by writing one of these types of plugin.

List of Moodle plugin types

Plugin type	Component name (Frankenstyle)	Moodle path	Description	Moodle versions
Activity modules	mod	/mod	Activity modules are essential types of plugins in Moodle as they provide activities in courses. For example: Forum, Quiz and Assignment.	1.0+
Antivirus plugins	antivirus	/lib/antivirus	Antivirus scanner plugins provide functionality for virus scanning user uploaded files using third-party virus scanning tools in Moodle. For example: ClamAV.	3.1+
Assignment submission plugins	assignsubmission	/mod/assign/submission	Different forms of assignment submissions	2.3+
Assignment feedback plugins	assignfeedback	/mod/assign/feedback	Different forms of assignment feedbacks	2.3+
Book tools	booktool	/mod/book/tool	Small information-displays or tools that can be moved around pages	2.1+
Database fields	datafield	/mod/data/field	Different types of data that may be added to the Database activity module	1.6+
Database presets	datapreset	/mod/data/preset	Pre-defined templates for the Database activity module	1.6+
LTI sources	ltisource	/mod/lti/source	LTI providers can be added to external tools easily through the external tools interface see Documentation on External Tools. This type of plugin is specific to LTI providers that need a plugin that can register custom handlers to process LTI messages	2.7+
File Converters	fileconverter	/files/converter	Allow conversion between different types of user-submitted file. For example from .doc to PDF.	3.2+
LTI services	ltiservice	/mod/lti/service	Allows the implementation of LTI services as described by the IMS LTI specification	2.8+
Machine learning backends	mlbackend	/lib/mlbackend	Prediction processors for analytics API	3.4+
Quiz reports	quiz	/mod/quiz/report	Display and analyse the results of quizzes, or just plug miscellaneous behaviour into the quiz module	1.1+
Quiz access rules	quizaccess	/mod/quiz/accessrule	Add conditions to when or where quizzes can be attempted, for example only from some IP addresses, or student must enter a password first	2.2+
SCORM reports	scormreport	/mod/scorm/report	Analysis of SCORM attempts	2.2+
Workshop grading strategies	workshopform	/mod/workshop/form	Define the type of the grading form and implement the calculation of the grade for submission in the Workshop module	2.0+
Workshop allocation methods	workshopallocation	/mod/workshop/allocation	Define ways how submissions are assigned for assessment in the Workshop module	2.0+
Workshop evaluation methods	workshopeval	/mod/workshop/eval	Implement the calculation of the grade for assessment (grading grade) in the Workshop module	2.0+
Blocks	block	/blocks	Small information-displays or tools that can be moved around pages	2.0+
Question types	qtype	/question/type	Different types of question (e.g. multiple-choice, drag-and-drop) that can be used in quizzes and other activities	1.6+
Question behaviours	qbehaviour	/question/behaviour	Control how student interact with questions during an attempt	2.1+
Question import/export formats	qformat	/question/format	Import and export question definitions to/from the question bank	1.6+
Text filters	filter	/filter	Automatically convert, highlight, and transmogrify text posted into Moodle.	1.4+
Editors	editor	/lib/editor	Alternative text editors for editing content	2.0+
Atto editor plugins	atto	/lib/editor/atto/plugins	Extra functionality for the Atto text editor	2.7+
TinyMCE editor plugins	tinymce	/lib/editor/tinymce/plugins	Extra functionality for the TinyMCE text editor.	2.4+
Enrolment plugins	enrol	/enrol	Ways to control who is enrolled in courses	2.0+
Authentication plugins	auth	/auth	Allows connection to external sources of authentication	2.0+
Admin tools	tool	/admin/tool	Provides utility scripts useful for various site administration and maintenance tasks	2.2+
Log stores	logstore	/admin/tool/log/store	Event logs storage back-ends	2.7+
Availability conditions	availability	/availability/condition	Conditions to restrict user access to activities and sections.	2.7+
Calendar types	calendartype	/calendar/type	Defines how dates are displayed throughout Moodle	2.6+
Messaging consumers	message	/message/output	Represent various targets where messages and notifications can be sent to (email, sms, jabber, ...)	2.0+
Course formats	format	/course/format	Different ways of laying out the activities and blocks in a course	1.3+
Data formats	dataformat	/dataformat	Formats for data exporting and downloading	3.1+
User profile fields	profilefield	/user/profile/field	Add new types of data to user profiles	1.9+
Reports	report	/report	Provides useful views of data in a Moodle site for admins and teachers	2.2+
Course reports	coursereport	/course/report	Reports of activity within the course	Up to 2.1 (for 2.2+ see Reports)
Gradebook export	gradeexport	/grade/export	Export grades in various formats	1.9+
Gradebook import	gradeimport	/grade/import	Import grades in various formats	1.9+
Gradebook reports	gradereport	/grade/report	Display/edit grades in various layouts and reports	1.9+
Advanced grading methods	gradingform	/grade/grading/form	Interfaces for actually performing grading in activity modules (eg Rubrics)	2.2+
MNet services	mnetservice	/mnet/service	Allows to implement remote services for the MNet environment (deprecated, use web services instead)	2.0+
Webservice protocols	webservice	/webservice	Define new protocols for web service communication (such as SOAP, XML-RPC, JSON, REST ...)	2.0+
Repository plugins	repository	/repository	Connect to external sources of files to use in Moodle	2.0+
Portfolio plugins	portfolio	/portfolio	Connect external portfolio services as destinations for users to store Moodle content	1.9+
Search engines	search	/search/engine	Search engine backends to index Moodle's contents.	3.1+
Media players	media	/media/player	Pluggable media players	3.2+
Plagiarism plugins	plagiarism	/plagiarism	Define external services to process submitted files and content	2.0+
Cache store	cachestore	/cache/stores	Cache storage back-ends.	2.4+
Cache locks	cachelock	/cache/locks	Cache lock implementations.	2.4+
Themes	theme	/theme	Change the look of Moodle by changing the the HTML and the CSS.	2.0+
Local plugins	local	/local	Generic plugins for local customisations	2.0+
Legacy assignment types	assignment	/mod/assignment/type	Different forms of assignments to be graded by teachers	1.x - 2.2
Legacy admin reports	report	/admin/report	Provides useful views of data in a Moodle site, for admins only.	Up to 2.1 (for 2.2+ see Reports)

Obtaining the list of plugin types known to your Moodle

To get the most exact list of types in your version of Moodle, use the following script. Put it to a file in the root directory of your Moodle installation and execute it via command line.

<?php define('CLI_SCRIPT', true); require('config.php');

$pluginman = core_plugin_manager::instance();

foreach ($pluginman->get_plugin_types() as $type => $dir) {

   $dir = substr($dir, strlen($CFG->dirroot));
   printf("%-20s %-50s %s".PHP_EOL, $type, $pluginman->plugintype_name_plural($type), $dir);

}

Things you can find in all plugins

Although there are many different types of plugin, there are some things that work the same way in all plugin types, and we have a page that describes them.

Additionally you probably want to look at the page Plugin files.

Naming conventions

Warning if you have to choose a plugin (directory) name. The name is validated by the method lib/classes/component.php::is_valid_plugin_name() with a regexp: /^[a-z](?:[a-z0-9_](?!__))*[a-z0-9]+$/. In particular, the minus (-) character is not considered as valid, and the plugin will be silently ignored if the name is not valid.

There is an exception for activity modules that can not have the underscore in their name for legacy reasons.

See also

• Guidelines for contributing code
• Core APIs
• Frankenstyle
• Moodle Plugins directory
• Tutorial to help you learn how to write plugins for Moodle from start to finish, while showing you how to navigate the most important developer documentation along the way.