database update using switchery switch using ajax in codeigniter - php

Question

I am developing an attendance management codeigniter app and I am using switchery switch plugin to update attendance status. The process will be:
System display the list of student with attendance status in checkbox with switchery plugin.
Using check or uncheck the checkbox with switchery plugin, if the student is present or absent or simply user change the status.
System sends the form using AJAX, if the student present 1 or absent 0, with student ID and attendance date.
And simply system will change the attendance status of student.
NOTE* THE VALUE OF $date $month $year $program_id $batch_id and $section_id is loaded before in controller function parameter.
And this my app's preview. I need to this form working using AJAX.
And this is my code for the view:
<!-- student attendence status update form -->
<form method="post" action="<?php echo base_url(); ?>index.php?admin/student_attendance">
<!-- start datatable -->
<table class="table table-hover dataTable table-striped width-full" id="departmentTableTools">
<thead>
<tr>
<th class="text-center"><?php echo get_phrase('rool'); ?></th>
<th class="text-center"><?php echo get_phrase('name'); ?></th>
<th class="text-center"><?php echo get_phrase('status'); ?></th>
</tr>
</thead>
<tbody>
<?php
foreach($students as $row):?>
<tr>
<td class="text-center"><?php echo $row['roll_no'];?></td>
<td class="text-center"><?php echo $row['name'];?></td>
<td class="text-center">
<input type="checkbox" value="1" name="status_<?php echo $row['student_id'];?>" data-plugin="switchery" <?php if($status == 1) echo 'checked'; ?>/>
</td>
</tr>
<?php endforeach;?>
</tbody>
</table>
<input type="hidden" name="date" value="<?php echo $full_date;?>" />
</form>
<!-- end the attendance status update form -->
And this my controller code:
if($_POST) // if the update request is send
{
foreach ($students as $row)
{
$this->crud_model->update_student_attendance($students['student_id'], $this->input->post('status_' . $row['student_id']), $this->input->post('date'));
}
$this->session->set_flashdata('flash_message' , get_phrase('data_updated'));
redirect(base_url() . 'index.php?admin/student_attendance/'.$date.'/'.$month.'/'.$year.'/'.$program_id.'/'.$batch_id , 'refresh');
}
And this is my model code to update and db values:
function update_student_attendance($student_id, $attendance_status, $full_date){
$this->db->where('student_id' , $student_id);
$this->db->where('date' , $full_date);
$this->db->update('attendance' , array('status' => $attendance_status));
}