public static function updateStudents($appointmentId, $oldStudentsIds, $newStudentsId)
{
if (!isset($newStudentsId) || empty($newStudentsId)) {
throw new Exception("Data have been malformed.");
}
Student::validateIds($newStudentsId);
$update = false;
$totStudents = sizeof($newStudentsId);
for ($i = 0; $i < $totStudents; $i++) {
$newStudentId = $newStudentsId[$i];
$oldStudentId = $oldStudentsIds[$i][AppointmentHasStudentFetcher::DB_COLUMN_STUDENT_ID];
if (strcmp($newStudentId, $oldStudentId) !== 0) {
if (self::hasStudentId($newStudentId, $oldStudentsIds)) {
throw new Exception("Student already exist on appointment." . var_dump($oldStudentsIds));
}
}
}
// check if there is a need to update data
for ($i = 0; $i < $totStudents; $i++) {
$newStudentId = $newStudentsId[$i];
$oldStudentId = $oldStudentsIds[$i][AppointmentHasStudentFetcher::DB_COLUMN_STUDENT_ID];
if (strcmp($newStudentId, $oldStudentId) !== 0) {
AppointmentHasStudentFetcher::updateStudentId($oldStudentId, $newStudentId, $appointmentId);
$update = true;
}
}
return $update;
}
