public static function getPotentialStudentIds($subject_id, $course_id, $potential_student_ids)
{
$criteria = new Criteria();
$criteria->add(self::SUBJECT_ID, $subject_id, Criteria::EQUAL);
$criteria->add(self::COURSE_ID, $course_id, Criteria::NOT_EQUAL);
$same_stundent_ids = array();
foreach (self::doSelect($criteria) as $course_subject) {
$students = CourseStudentPeer::getStudentForCourse($course_subject->getCourseId());
foreach ($students as $student) {
if (in_array($student->getId(), $potential_student_ids)) {
$same_stundent_ids[] = $student->getId();
}
}
}
$student_ids = array_diff($potential_student_ids, $same_stundent_ids);
return $student_ids;
}
