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Long Term Support Release

  • Bug fixes for general core bugs in 3.9.x will end* 10 May 2021 (12 months).
  • Bug fixes for security issues in 3.9.x will end* 8 May 2023 (36 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
/cohort/ -> lib.php (source)

Differences Between: [Versions 39 and 402] [Versions 39 and 403]

Cohort related management functions, this file needs to be included manually.

Copyright: 2010 Petr Skoda {@link http://skodak.org}
License: http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
File Size: 637 lines (23 kb)
Included or required:0 times
Referenced: 18 times
Includes or requires: 0 files

Defines 19 functions


Functions that are not part of a class:

cohort_add_cohort($cohort)   X-Ref
Add new cohort.

param: stdClass $cohort
return: int new cohort id

cohort_update_cohort($cohort)   X-Ref
Update existing cohort.

param: stdClass $cohort
return: void

cohort_delete_cohort($cohort)   X-Ref
Delete cohort.

param: stdClass $cohort
return: void

cohort_delete_category($category)   X-Ref
Somehow deal with cohorts when deleting course category,
we can not just delete them because they might be used in enrol
plugins or referenced in external systems.

param: stdClass|core_course_category $category
return: void

cohort_add_member($cohortid, $userid)   X-Ref
Add cohort member

param: int $cohortid
param: int $userid
return: void

cohort_remove_member($cohortid, $userid)   X-Ref
Remove cohort member

param: int $cohortid
param: int $userid
return: void

cohort_is_member($cohortid, $userid)   X-Ref
Is this user a cohort member?

param: int $cohortid
param: int $userid
return: bool

cohort_get_available_cohorts($currentcontext, $withmembers = 0, $offset = 0, $limit = 25, $search = '')   X-Ref
Returns the list of cohorts visible to the current user in the given course.

The following fields are returned in each record: id, name, contextid, idnumber, visible
Fields memberscnt and enrolledcnt will be also returned if requested

param: context $currentcontext
param: int $withmembers one of the COHORT_XXX constants that allows to return non empty cohorts only
param: int $offset
param: int $limit
param: string $search
return: array

cohort_can_view_cohort($cohortorid, $currentcontext)   X-Ref
No description

cohort_get_cohort($cohortorid, $currentcontext)   X-Ref
Get a cohort by id. Also does a visibility check and returns false if the user cannot see this cohort.

param: stdClass|int $cohortorid cohort object or id
param: context $currentcontext current context (course) where visibility is checked
return: stdClass|boolean

cohort_get_search_query($search, $tablealias = '')   X-Ref
Produces a part of SQL query to filter cohorts by the search string

Called from {@link cohort_get_cohorts()}, {@link cohort_get_all_cohorts()} and {@link cohort_get_available_cohorts()}

param: string $search search string
param: string $tablealias alias of cohort table in the SQL query (highly recommended if other tables are used in query)
return: array of two elements - SQL condition and array of named parameters

cohort_get_cohorts($contextid, $page = 0, $perpage = 25, $search = '')   X-Ref
Get all the cohorts defined in given context.

The function does not check user capability to view/manage cohorts in the given context
assuming that it has been already verified.

param: int $contextid
param: int $page number of the current page
param: int $perpage items per page
param: string $search search string
return: array    Array(totalcohorts => int, cohorts => array, allcohorts => int)

cohort_get_all_cohorts($page = 0, $perpage = 25, $search = '')   X-Ref
Get all the cohorts defined anywhere in system.

The function assumes that user capability to view/manage cohorts on system level
has already been verified. This function only checks if such capabilities have been
revoked in child (categories) contexts.

param: int $page number of the current page
param: int $perpage items per page
param: string $search search string
return: array    Array(totalcohorts => int, cohorts => array, allcohorts => int)

cohort_get_user_cohorts($userid)   X-Ref
Get all the cohorts where the given user is member of.

param: int $userid
return: array Array

cohort_get_user_cohort_theme($userid)   X-Ref
Get the user cohort theme.

If the user is member of one cohort, will return this cohort theme (if defined).
If the user is member of 2 or more cohorts, will return the theme if all them have the same
theme (null themes are ignored).

param: int $userid
return: string|null

cohort_get_invisible_contexts()   X-Ref
Returns list of contexts where cohorts are present but current user does not have capability to view/manage them.

This function is called from {@link cohort_get_all_cohorts()} to ensure correct pagination in rare cases when user
is revoked capability in child contexts. It assumes that user's capability to view/manage cohorts on system
level has already been verified.

return: array array of context ids

cohort_edit_controls(context $context, moodle_url $currenturl)   X-Ref
Returns navigation controls (tabtree) to be displayed on cohort management pages

param: context $context system or category context where cohorts controls are about to be displayed
param: moodle_url $currenturl
return: null|renderable

core_cohort_inplace_editable($itemtype, $itemid, $newvalue)   X-Ref
Implements callback inplace_editable() allowing to edit values in-place

param: string $itemtype
param: int $itemid
param: mixed $newvalue
return: \core\output\inplace_editable

cohort_get_list_of_themes()   X-Ref
Returns a list of valid themes which can be displayed in a selector.

return: array as (string)themename => (string)get_string_theme