/**
* Returns an array of cluster ids that are associated to the supplied class through tracks and
* the current user has access to enrol users into
*
* @param int $clsid The class whose association ids we care about
* @return int array The array of accessible cluster ids
*/
public static function get_allowed_clusters($clsid)
{
global $USER;
$context = pm_context_set::for_user_with_capability('cluster', 'local/elisprogram:assign_userset_user_class_instructor', $USER->id);
$allowed_clusters = array();
// TODO: Ugly, this needs to be overhauled
$cpage = new pmclasspage();
if ($cpage->_has_capability('local/elisprogram:assign_userset_user_class_instructor', $clsid)) {
require_once elispm::lib('data/clusterassignment.class.php');
$cmuserid = pm_get_crlmuserid($USER->id);
$userclusters = clusterassignment::find(new field_filter('userid', $cmuserid));
foreach ($userclusters as $usercluster) {
$allowed_clusters[] = $usercluster->clusterid;
}
}
//we first need to go through tracks to get to clusters
$track_listing = new trackassignment(array('classid' => $clsid));
$tracks = $track_listing->get_assigned_tracks();
//iterate over the track ides, which are the keys of the array
if (!empty($tracks)) {
foreach (array_keys($tracks) as $track) {
//get the clusters and check the context against them
$clusters = clustertrack::get_clusters($track);
$allowed_track_clusters = $context->get_allowed_instances($clusters, 'cluster', 'clusterid');
//append all clusters that are allowed by the available clusters contexts
foreach ($allowed_track_clusters as $allowed_track_cluster) {
$allowed_clusters[] = $allowed_track_cluster;
}
}
}
return $allowed_clusters;
}
/**
* Test get_assigned_tracks function
*/
public function test_get_assigned_tracks()
{
// Fixture.
$dataset = $this->createCsvDataset(array(trackassignment::TABLE => elispm::file('tests/fixtures/trackassignment.csv')));
$this->loadDataSet($dataset);
// Test.
$trackassignment = new trackassignment();
$trackassignment->classid = 100;
$assignedtracks = $trackassignment->get_assigned_tracks();
// Verify we got a non-empty array.
$this->assertNotEmpty($assignedtracks);
$this->assertInternalType('array', $assignedtracks);
// Verify contents.
$count = 0;
foreach ($assignedtracks as $trackid => $trackassignmentid) {
$this->assertEquals(1, $trackid);
$this->assertEquals(1, $trackassignmentid);
$count++;
}
$this->assertEquals(1, $count);
}
/**
* Determines whether the current user is allowed to enrol users into the provided class
*
* @param int $classid The id of the class we are checking permissions on
*
* @return boolean Whether the user is allowed to enrol users into the class
*
*/
static function can_enrol_into_class($classid)
{
global $USER;
//check the standard capability
// TODO: Ugly, this needs to be overhauled
$cpage = new pmclasspage();
if ($cpage->_has_capability('local/elisprogram:class_enrol', $classid) || $cpage->_has_capability('local/elisprogram:class_enrol_userset_user', $classid)) {
return true;
}
//get the context for the "indirect" capability
$context = pm_context_set::for_user_with_capability('cluster', 'local/elisprogram:class_enrol_userset_user', $USER->id);
//we first need to go through tracks to get to clusters
$track_listing = new trackassignment(array('classid' => $classid));
$tracks = $track_listing->get_assigned_tracks();
//iterate over the track ides, which are the keys of the array
if (!empty($tracks)) {
foreach (array_keys($tracks) as $track) {
//get the clusters and check the context against them
$clusters = clustertrack::get_clusters($track);
if (!empty($clusters)) {
foreach ($clusters as $cluster) {
if ($context->context_allowed($cluster->clusterid, 'cluster')) {
return true;
}
}
}
}
}
return false;
}
