Why are session Ids in my table changing to 0? - php

Question

I have a form for submitting students' scores which is supposed to capture the session id (session ids are used to to show the session that a school is currently on e.g 2018/2019 session, 2019/2020 session...)
session table
In the scores table in the database, the session id is automatically captured and inserted. Currently, the session id is 14.
session id
However, for reasons unknown 0s are inserted instead of 14. This is causing so many issues
In the add scores form, scores values are only repopulated if the session id is 14. Now, since it shows 0, the value boxes remain 0
Also I believe it causes duplicate issues. During edits in the form, all scores of students are duplicated.
Controller
function assigngradeAction()
{
for($i=0; $i<count($this->input->post('number')); $i++)
{
$data[]=array(
'section_id' => $this->input->post('section_id'),
'subject_id' => $this->input->post('subject_id'),
'class_id' => $this->input->post('class_id')[$i],
'student_id' => $this->input->post('student_id')[$i],
'session_id' => $this->input->post('session_id'),
'ca1' => $this->input->post('ca1')[$i],
'ca2' => $this->input->post('ca2')[$i],
'ca3' => $this->input->post('ca3')[$i],
'ca4' => $this->input->post('ca4')[$i],
'project' => $this->input->post('project')[$i],
'affective' => $this->input->post('affective')[$i],
'psychomotor' => $this->input->post('psychomotor')[$i],
'exam'=> $this->input->post('exam')[$i],
'tot_score'=> $this->input->post('ca1')[$i] + $this->input->post('ca2')[$i] + $this->input->post('ca3')[$i] + $this->input->post('ca4')[$i] + $this->input->post('project')[$i] + $this->input->post('affective')[$i] + $this->input->post('psychomotor')[$i] + $this->input->post('exam')[$i],
);
}
$inserted = $this->primary_model->add1($data);
if($inserted > 0)
{
$this->session->set_flashdata('msg', '<div class="alert alert-success">Grade Added successfully</div>');
//Echo back success json
redirect('admin/primary/index');
}
}
model
public function add1($data)
{
// for each record insert
foreach($data as $studentScore){
// get score
$subjectId = $studentScore['subject_id'];
$classId = $studentScore['class_id'];
$sessionId = $studentScore['session_id'];
$sectionId = $studentScore['section_id'];
$studentId = $studentScore['student_id'];
$score = $this->get_student_score($subjectId,$sessionId,$sectionId,$classId,$studentId);
$studentScore['modified_at'] = date("Y-m-d H:i:s");
if(empty($score->id)){
$this->db->insert('scores_primary', $studentScore);
}else{
$this->db->where('id', $score->id);
$this->db->update('scores_primary', $studentScore);
}
// var_dump($studentScore, "\n >>>>>>>>", $score);
}
// $this->db->insert_batch('scores_primary', $data);
// var_dump($this->db->error(), $_SERVER['SERVER_ADDR'] );
// $str = $this->db->last_query();
// echo "<pre>";
// print_r($str);
return true;
}
view
<?php }elseif($class_id >= 15 && $class_id <= 17){ ?>
<form action="<?php echo site_url('admin/primary/assigngradeAction') ?>" method="POST" id="formSubjectTeacher">
<?php echo $this->customlib->getCSRF(); ?>
<div class="row">
<div class="col-lg-3">
<input type="hidden" name="class" value="<?php echo $class_id; ?>">
<input type="hidden" name="subject_id" value="<?php echo $subject_id; ?>">
</div>
<div class="col-lg-4">
<h4><strong><?php echo $session_name; ?></strong></h4>
</div>
</div>
<br>
<hr>
<?php foreach($students as $student){ ?>
<div class="row">
<div class="col-lg-3">
<div class="form-group">
<label>Student Name</label>
<input type="hidden" name="number[]" value="">
<input type="hidden" name="section_id" value="<?php echo $section_id; ?>">
<input type="hidden" name="session_id" value="<?php echo $student->session_id; ?>">
<input type="hidden" name="student_id[]" value="<?php echo $student->student_id; ?>">
<input type="hidden" name="class_id[]" value="<?php echo $class_id; ?>">
<input type="text" value="<?php echo $CI->GetStudentNameWithID($student->student_id); ?>" class="form-control " readonly>
</div>
</div>
<div class="col-lg-1">
<label>ca1 </label>
<input type="hidden" name="session_id" value="<?php echo $sessionID; ?>">
<input type="number" name="ca1[]" min="0" max="10" class="form-control input-sm rounded-0" value="<?php echo $student->scores? $student->scores->ca1: 0; ?>">
</div>
<div class="col-lg-1" id="t2">
<label>ca2</label>
<input type="number" name="ca2[]" min="0" max="10" class="form-control input-sm rounded-0" value="<?php echo $student->scores? $student->scores->ca2: 0; ?>">
</div>
<div class="col-lg-1" id="assg">
<label>ca3</label>
<input type="number" name="ca3[]" min="0" max="10" class="form-control input-sm rounded-0" value="<?php echo $student->scores? $student->scores->ca3: 0; ?>">
</div>
<div class="col-lg-1" id="exam">
<label>Exam</label>
<input type="number" name="exam[]" min="0" max="70" class="form-control input-sm rounded-0" value="<?php echo $student->scores? $student->scores->exam: 0; ?>">
</div>
<div class="col-lg-1">
<label>Total</label>
<output class="result"></output>
</div>
</div>
<?php } ?>

Answer 1

in your view in form you have two input fields named session_id ↓↓
<input type="hidden" name="session_id" value="<?php echo $student->session_id; ?>">
<input type="hidden" name="session_id" value="<?php echo $sessionID; ?>">
Duplicate fields can cause issues, check which one has the correct
value in it and discard the other one. If both of the fields have
wrong values then check where the values are being initialized and so
on. This is how you debug in PHP.