if (Grade::exists($id, $student_id)) {
$newgrade = Grade::get_by_subj_stud($id, $student_id);
$newgrade->delete();
}
$newgrade = new Grade();
$newgrade->subject_id = $id;
$newgrade->student_id = $student_id;
$newgrade->grade = 0;
$newgrade->create();
$pre_subject = Subject::get_by_id($id);
if (!EvaluatedSubject::exists($id, $student_id)) {
$grade = Grade::get_by_subj_stud($pre_subject->id, $student_id);
$gradepre = Grade::get_by_subj_stud($pre_subject->prereq_subject_id, $student_id);
if (has_prerequisite($pre_subject->prereq_subject_id, $student_subjects)) {
if ($gradepre != null) {
if (Grade::get_by_subj_stud($pre_subject->prereq_subject_id, $student_id)->grade <= 74) {
$warnings .= "Cannot add " . $pre_subject->code . " because it's previous subject:" . Subject::get_by_id($pre_subject->prereq_subject_id)->code . " is failed\n\n";
} else {
$eval_subject = new EvaluatedSubject();
$eval_subject->student_id = $student_id;
$eval_subject->subject_id = $id;
$eval_subject->create();
}
}
} else {
$eval_subject = new EvaluatedSubject();
$eval_subject->student_id = $student_id;
$eval_subject->subject_id = $id;
$eval_subject->create();
}
}
<?php
require_once "../includes/initialize.php";
$student_id = $_GET['student_id'];
$subject_ids2 = $_POST['subject_ids2'];
$message = "success";
foreach ($subject_ids2 as $id) {
$subject_id = EvaluatedSubject::get_by_id($id)->subject_id;
$newgrade = Grade::get_by_subj_stud($subject_id, $student_id);
if ($newgrade != null) {
$newgrade->delete();
}
$object = EvaluatedSubject::get_by_id($id);
if ($object != null) {
$object->delete();
}
}
echo $message;