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MDL-83917 core_completion: Create function count_modules_completed

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The function returns the number of modules completed by a user and
executes a COUNT aggregate function to avoid running many queries
to obtain this information, aiming to optimize performance.

Co-authored-by: Carlos Castillo <carlos.castillo@moodle.com>
This commit is contained in:
Pedro Jordao 2024-12-03 17:10:43 -03:00
parent 7bf1f87415
commit ea6d8984ba
4 changed files with 179 additions and 10 deletions
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7
.upgradenotes/MDL-83917-2024121004111313.yml Normal file
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@ -0,0 +1,7 @@
issueNumber: MDL-83917
notes:
core_completion:
- message: >-
The method `count_modules_completed` now delegate the logic to count the
completed modules to the DBMS improving the performance of the method.
type: improved

12
completion/classes/progress.php
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@ -77,16 +77,8 @@ class progress {
}
// Get the number of modules that have been completed.
$completed = 0;
foreach ($modules as $module) {
$data = $completion->get_data($module, true, $userid);
if (($data->completionstate == COMPLETION_INCOMPLETE) || ($data->completionstate == COMPLETION_COMPLETE_FAIL)) {
$completed += 0;
} else {
$completed += 1;
};
}
$totalcompleted = $completion->count_modules_completed($userid);
return ($completed / $count) * 100;
return ($totalcompleted / $count) * 100;
}
}

21
lib/completionlib.php
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@ -1641,6 +1641,27 @@ class completion_info {
return (array)$data;
}
/**
* Return the number of modules completed by a user in one specific course.
*
* @param int $userid The User ID.
* @return int Total number of modules completed by a user
*/
public function count_modules_completed(int $userid): int {
global $DB;
$sql = "SELECT COUNT(1)
FROM {course_modules} cm
JOIN {course_modules_completion} cmc ON cm.id = cmc.coursemoduleid
WHERE cm.course = :courseid
AND cmc.userid = :userid
AND (cmc.completionstate = " . COMPLETION_COMPLETE . "
OR cmc.completionstate = " . COMPLETION_COMPLETE_PASS . ")";
$params = ['courseid' => $this->course_id, 'userid' => $userid];
return $DB->count_records_sql($sql, $params);
}
}
/**

149
lib/tests/completionlib_test.php
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@ -2086,6 +2086,155 @@ final class completionlib_test extends advanced_testcase {
['course' => $this->course->id]
));
}
/**
* Data provider for test_count_modules_completed().
*
* @return array[]
*/
public static function count_modules_completed_provider(): array {
return [
'Multiple users with two different modules but only one completed' => [
'existinguser' => true,
'totalusers' => 3,
'modules' => [
[
'name' => 'assign',
'completionstate' => COMPLETION_COMPLETE,
],
[
'name' => 'choice',
'completionstate' => COMPLETION_INCOMPLETE,
],
],
'expectedcount' => 1,
],
'Multiple users with three different modules but only two completed' => [
'existinguser' => true,
'totalusers' => 4,
'modules' => [
[
'name' => 'assign',
'completionstate' => COMPLETION_COMPLETE,
],
[
'name' => 'choice',
'completionstate' => COMPLETION_INCOMPLETE,
],
[
'name' => 'workshop',
'completionstate' => COMPLETION_COMPLETE,
],
],
'expectedcount' => 2,
],
'Multiple users with one completion each' => [
'existinguser' => true,
'totalusers' => 5,
'modules' => [
[
'name' => 'assign',
'completionstate' => COMPLETION_COMPLETE,
],
],
'expectedcount' => 1,
],
'One user with one completion' => [
'existinguser' => true,
'totalusers' => 1,
'modules' => [
[
'name' => 'assign',
'completionstate' => COMPLETION_COMPLETE,
],
],
'expectedcount' => 1,
],
'Multiple users without completion' => [
'existinguser' => true,
'totalusers' => 3,
'modules' => [
[
'name' => 'assign',
'completionstate' => COMPLETION_INCOMPLETE,
],
],
'expectedcount' => 0,
],
'Non-existing user' => [
'existinguser' => false,
'totalusers' => 1,
'modules' => [
[
'name' => 'assign',
'completionstate' => COMPLETION_INCOMPLETE,
],
],
'expectedcount' => 0,
],
];
}
/**
* Test for count_modules_completed().
*
* @dataProvider count_modules_completed_provider
* @param bool $existinguser Whether the given user exists or not.
* @param int $totalusers The amount of users to check completion.
* @param array $modules The course modules with its completion state.
* @param int $expectedcount Expected total of modules completed.
* @covers ::count_modules_completed
*/
public function test_count_modules_completed(bool $existinguser, int $totalusers, array $modules,
int $expectedcount): void {
global $DB;
$this->setAdminUser();
$this->setup_data();
// Loop through the provided modules array and set the id key based on the generated module.
$modules = array_map(function(array $module): array {
$generator = $this->getDataGenerator()->get_plugin_generator('mod_' . $module['name']);
$modinstance = $generator->create_instance([
'course' => $this->course->id,
'completion' => COMPLETION_TRACKING_AUTOMATIC,
'completionsubmit' => true,
]);
$cminstance = get_coursemodule_from_instance($module['name'], $modinstance->id);
$module['id'] = $cminstance->id;
return $module;
}, $modules);
$completion = new completion_info($this->course);
if ($existinguser) {
// Create users, assign them to a course and define the completion record.
for ($i = 0; $i < $totalusers; $i++) {
$user = $this->getDataGenerator()->create_user();
$this->getDataGenerator()->enrol_user($user->id, $this->course->id);
$users[] = $user;
foreach ($modules as $module) {
$cmcompletionrecords[] = (object)[
'coursemoduleid' => $module['id'],
'userid' => $user->id,
'completionstate' => $module['completionstate'],
'timemodified' => 0,
];
}
}
$DB->insert_records('course_modules_completion', $cmcompletionrecords);
foreach ($users as $user) {
$this->assertEquals($expectedcount, $completion->count_modules_completed($user->id));
}
} else {
$nonexistinguserid = 123;
$this->assertEquals($expectedcount, $completion->count_modules_completed($nonexistinguserid));
}
}
}
class core_completionlib_fake_recordset implements Iterator {