View source for Development:New enrolments in 2.0

{{Work in progress}}
{{Infobox Project
|name = New enrolments in 2.0
|state = Work in progress
|tracker = MDL-21782
|discussion = n/a
|assignee = [[User:Petr Škoda (škoďák)|Petr Škoda (škoďák)]]
}}
{{Moodle 2.0}}

=Overview=
The major difference from 1.6-1.9 enrolments is that the course enrolment information is stored again in a separate database table ''course_participants''. The enrolment related information was move from ''course'' table to new ''enrol'' table which holds plugin instances. The old enrolment plugins need to be completely rewritten. Course category enrolments via role assignments is not possible any more, existing category enrolments are migrated to new cohorts and cohort enrolment plugin.

The benefits are:
* we can use SQL to find enrolled users in any course extremely quickly (much better performance)
* multiple enrolment plugins per course are full supported (includes more instances of the same type)
* new enrolment overview interface
* user enrolments may be suspended and reactivated
* plugin may prevent users to change/break  enrolment synchronised with external systems
* finer access control, more flexible/configurable course settings UI
* no hardcoded enrolment behaviour - it is possible to completely replace guest access, self enrolments, etc. with custom plugins



=See also=
* [[Development:Enrolment usage overview]]
* [[Development:Role archetypes]]
* [[Development:New permissions evaluation in 2.0]]