public function absences($id)
{
$class_id = substr($id, 0, 1);
$student_id = substr($id, 1);
$student = Student::find($student_id);
$absences = StudentAttendance::where('student_id', '=', $student_id)->where('class_id', '=', $class_id)->orderBy('date', 'ASC')->get();
$class = DB::table('classes')->where('id', $class_id)->pluck('name');
$page_data = array('student' => $student, 'absences' => $absences, 'class' => $class);
$this->layout->title = 'Absences';
$this->layout->content = View::make('admin.absences', $page_data);
}
