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MDL-40354 groups: Add new api groups_group_visible()

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This commit is contained in:
Ankit Agarwal 2013-07-02 12:06:41 +08:00
parent f4d46f6848
commit e7eb992d3a
1 changed files with 38 additions and 0 deletions
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38
lib/grouplib.php
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@ -812,6 +812,44 @@ function groups_course_module_visible($cm, $userid=null) {
return false;
}
/**
* Determine if a given group is visible to user or not in a given context.
*
* @since Moodle 2.6
* @param int $groupid Group id to test. 0 for all groups.
* @param stdClass $course Course object.
* @param stdClass $cm Course module object.
* @param int $userid user id to test against. Defaults to $USER.
* @return boolean true if visible, false otherwise
*/
function groups_group_visible($groupid, $course, $cm = null, $userid = null) {
global $USER;
if (empty($userid)) {
$userid = $USER->id;
}
$groupmode = empty($cm) ? groups_get_course_groupmode($course) : groups_get_activity_groupmode($cm, $course);
if ($groupmode == NOGROUPS || $groupmode == VISIBLEGROUPS) {
// Groups are not used, or everything is visible, no need to go any further.
return true;
}
// Group mode is separate, check if user can see requested group.
$groups = empty($cm) ? groups_get_all_groups($course->id, $userid) : groups_get_activity_allowed_groups($cm, $userid);
if (array_key_exists($groupid, $groups)) {
// User can see the group.
return true;
}
// User wants to see all groups.
if ($groupid == 0) {
$context = empty($cm) ? context_course::instance($course->id) : context_module::instance($cm->id);
return has_capability('moodle/site:accessallgroups', $context, $userid);
}
return false;
}
/**
* Internal method, sets up $SESSION->activegroup and verifies previous value
*