moodle/moodle
3
0
Fork 0
mirror of https://github.com/moodle/moodle.git synced 2025-08-05 00:46:50 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fixed up get_my_courses().

Browse source 
It's not a tidy SQL statement any more but it's MUCH MUCH faster
with large data sets.
This commit is contained in:
moodler 2003-08-21 17:24:40 +00:00
parent 98e9a035d7
commit 2f3499b70d
1 changed files with 32 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

41
lib/datalib.php
View file

@ -1185,17 +1185,40 @@ function get_courses_page($categoryid="all", $sort="c.sortorder ASC", $fields="c
}
function get_my_courses($userid, $sort="c.fullname ASC") {
function get_my_courses($userid, $sort="fullname ASC") {
global $CFG;
return get_records_sql("SELECT c.*
FROM {$CFG->prefix}course c,
{$CFG->prefix}user_students s,
{$CFG->prefix}user_teachers t
WHERE (s.userid = '$userid' AND s.course = c.id)
OR (t.userid = '$userid' AND t.course = c.id)
GROUP BY c.id
ORDER BY $sort");
$course = array();
if ($students = get_records("user_students", "userid", $userid, "", "id, course")) {
foreach ($students as $student) {
$course[$student->course] = $student->course;
}
}
if ($teachers = get_records("user_teachers", "userid", $userid, "", "id, course")) {
foreach ($teachers as $teacher) {
$course[$teacher->course] = $teacher->course;
}
}
if (empty($course)) {
return $course;
}
$courseids = implode(',', $course);
return get_records_list("course", "id", $courseids, $sort);
// The following is correct but VERY slow with large datasets
//
// return get_records_sql("SELECT c.*
// FROM {$CFG->prefix}course c,
// {$CFG->prefix}user_students s,
// {$CFG->prefix}user_teachers t
// WHERE (s.userid = '$userid' AND s.course = c.id)
// OR (t.userid = '$userid' AND t.course = c.id)
// GROUP BY c.id
// ORDER BY $sort");
}