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Merge branch 'wip-MDL-28615-master-squashed' of git://github.com/samhemelryk/moodle

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This commit is contained in:
Aparup Banerjee 2011-10-05 10:54:05 +08:00
commit 73f5ebea0c
5 changed files with 741 additions and 192 deletions
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59
lib/enrollib.php
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@ -228,11 +228,35 @@ function enrol_check_plugins($user) {
* The courses has to be visible and enrolments has to be active,
* timestart and timeend restrictions are ignored.
*
* This function calls {@see enrol_get_shared_courses()} setting checkexistsonly
* to true.
*
* @param stdClass|int $user1
* @param stdClass|int $user2
* @return bool
*/
function enrol_sharing_course($user1, $user2) {
return enrol_get_shared_courses($user1, $user2, false, true);
}
/**
* Returns any courses shared by the two users
*
* The courses has to be visible and enrolments has to be active,
* timestart and timeend restrictions are ignored.
*
* @global moodle_database $DB
* @param stdClass|int $user1
* @param stdClass|int $user2
* @param bool $preloadcontexts If set to true contexts for the returned courses
* will be preloaded.
* @param bool $checkexistsonly If set to true then this function will return true
* if the users share any courses and false if not.
* @return array|bool An array of courses that both users are enrolled in OR if
* $checkexistsonly set returns true if the users share any courses
* and false if not.
*/
function enrol_get_shared_courses($user1, $user2, $preloadcontexts = false, $checkexistsonly = false) {
global $DB, $CFG;
$user1 = !empty($user1->id) ? $user1->id : $user1;
@ -253,14 +277,33 @@ function enrol_sharing_course($user1, $user2) {
$params['user1'] = $user1;
$params['user2'] = $user2;
$sql = "SELECT DISTINCT 'x'
FROM {enrol} e
JOIN {user_enrolments} ue1 ON (ue1.enrolid = e.id AND ue1.status = :active1 AND ue1.userid = :user1)
JOIN {user_enrolments} ue2 ON (ue2.enrolid = e.id AND ue2.status = :active2 AND ue2.userid = :user2)
JOIN {course} c ON (c.id = e.courseid AND c.visible = 1)
WHERE e.status = :enabled AND e.enrol $plugins";
$ctxselect = '';
$ctxjoin = '';
if ($preloadcontexts) {
list($ctxselect, $ctxjoin) = context_instance_preload_sql('c.id', CONTEXT_COURSE, 'ctx');
}
return $DB->record_exists_sql($sql, $params);
$sql = "SELECT c.* $ctxselect
FROM {course} c
JOIN (
SELECT DISTINCT c.id
FROM {enrol} e
JOIN {user_enrolments} ue1 ON (ue1.enrolid = e.id AND ue1.status = :active1 AND ue1.userid = :user1)
JOIN {user_enrolments} ue2 ON (ue2.enrolid = e.id AND ue2.status = :active2 AND ue2.userid = :user2)
JOIN {course} c ON (c.id = e.courseid AND c.visible = 1)
WHERE e.status = :enabled AND e.enrol $plugins
) ec ON ec.id = c.id
$ctxjoin";
if ($checkexistsonly) {
return $DB->record_exists_sql($sql, $params);
} else {
$courses = $DB->get_records_sql($sql, $params);
if ($preloadcontexts) {
array_map('context_instance_preload', $courses);
}
return $courses;
}
}
/**
@ -1566,4 +1609,4 @@ abstract class enrol_plugin {
public function get_bulk_operations() {
return array();
}
}
}