function getAvailableSections()
{
$enrollments = Enrollment::where('student_id', '=', $this->id)->get()->toArray();
$enrollment_ids = array_column($enrollments, 'id');
$section_ids = array_column($enrollments, 'section_id');
$sections_enrolled = Section::whereIn('id', $section_ids)->get()->toArray();
$courses_enrolled = array_column($sections_enrolled, 'course_id');
$sections_enrolled_timecode = array_column($sections_enrolled, 'time_code');
$sections_enrolled_days = array_column($sections_enrolled, 'days');
$sections_enrolled_timeflags = [];
for ($i = 0; $i < count($sections_enrolled_timecode); $i++) {
$sections_enrolled_timeflags[] = $sections_enrolled_days[$i] . $sections_enrolled_timecode[$i];
}
$sections_available = Section::whereNotIn('course_id', $courses_enrolled)->get()->toArray();
$sections_available_ids = array_column($sections_available, 'id');
$vsections_available = Vsection::whereIn('id', $sections_available_ids)->whereRaw('filled < capacity')->whereNotIn('time_flag', $sections_enrolled_timeflags)->get()->toArray();
// print_r($section_ids);
// foreach ($enrollments as $e) {
// $enrollment_ids[] = $e->id;
// }
// dd($sections_enrolled);
// dd($vsections_available);
return $vsections_available;
}