CodeIgniter Update query not working - php

Question

I want to terminate a employee from the system. When clicks on terminate button it will popup a moadal asking whether wants to terminate or cancel. If terminate database value resign should be updated as 0, but right now button does not working.
Here is my code
controller
public function ajax_list()
{
$list = $this->employees->get_datatables();
$data = array();
$no = $_POST['start'];
foreach ($list as $emp) {
$no++;
$row = array();
$row[] = $emp->employee_id;
$row[] = $emp->name;
$jid = $emp->job_title;
$desigdata = $this->employees->GetJobTitlebyID($jid);
$row[] = $desigdata->desc;
$did = $emp->department;
$deptdata = $this->employees->GetDepartmentbyID($did);
$row[] = $deptdata->title;
$secid = $emp->section;
$secdata = $this->employees->GetSectionbyID($secid);
$row[] = $secdata->desc;
//add html for action
$row[] = '<a class="btn btn-sm btn-primary" href="javascript:void()" onclick="terminate_emp('."'".$emp->id."'".')"><i class="glyphicon glyphicon-pencil"></i> Terminate</a>';
$data[] = $row;
}
$output = array(
"draw" => $_POST['draw'],
"recordsTotal" => $this->employees->count_all(),
"recordsFiltered" => $this->employees->count_filtered(),
"data" => $data,
);
echo json_encode($output);
}
public function ajax_terminate()
{
$this->_validate();
$data = array(
'resign' => $this->input->post('resign'),
);
$this->employees->update(array('id' => $this->input->post('id')), $data);
echo json_encode(array("status" => TRUE, "id" => $this->input->post('id')));
}
Model
function terminate_emp($data)
{
$this->db->where('resign', 0);
$this->db->update('employees', $data);
}
View
function terminate_emp(id)
{
save_method = 'update';
$('#form')[0].reset();
$('.form-group').removeClass('has-error');
$('.help-block').empty();
//Ajax Load data from ajax
$.ajax({
url : "<?php echo site_url('employees_con/ajax_terminate/')?>/" + id,
type: "GET",
dataType: "JSON",
success: function(data)
{
$('[name="id"]').val(data.id);
if(data.resign == 1)
{
//$('[name="resign"]').val(data.resign);
$('#resign').prop('checked', true);
}
$('[name="resign"]').val(data.resign);
$('#modal_formterminate').modal('show'); // show bootstrap modal when complete loaded
$('.modal-title').text('Terminate Employee'); // Set title to Bootstrap modal title
},
error: function (jqXHR, textStatus, errorThrown)
{
alert('Error get data from ajax');
}
});
}
<div class="modal fade" id="modal_formterminate" role="dialog">
<div class="modal-dialog modal-full" style="max-width: 600px">
<div class="modal-content">
<div class="modal-header bg-blue-steel bg-font-blue-steel">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h3 class="modal-title bold uppercase">Person</h3>
</div>
<div class="modal-body form">
<form action="#" id="form" class="form-horizontal">
<input type="hidden" value="" name="id"/>
<div class="form-body">
<div id="empWizard">
<p style="color: #0000cc"><b>Are You sure to Terminate this employee</b></p>
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" id="btnSaveterminate" onclick="save()" class="btn btn-primary">Terminate</button>
<button type="button" class="btn btn-danger" data-dismiss="modal">Cancel</button>
</div>
</div><!-- /.modal-content -->
</div><!-- /.modal-dialog -->
</div>

Answer 1

In controller
$this->employees->update(array('id' => $this->input->post('id')), $data);
You are passing two parameters to update function of your model, one is an array and the other one $data that is also an array.
But In Model,
function terminate_emp($data)
{
$this->db->where('resign', 0);
$this->db->update('employees', $data);
}
you are just accepting one parameter in the update function.

Answer 2

First of all you are making GET request through AJAX and on Controller function ajax_terminate() you are accessing variables using POST. You resign value is not passing through ajax and you are trying to get on controller function ajax_terminate(). See below code:-
function terminate_emp(id)
{
save_method = 'update';
$('#form')[0].reset();
$('.form-group').removeClass('has-error');
$('.help-block').empty();
//Ajax Load data from ajax
$.ajax({
url : "<?php echo site_url('employees_con/ajax_terminate/')?>/",
type: "POST",
dataType: "JSON",
data: {id:id,resign:YOUR_RESIGN_VALUE}
success: function(data)
{
$('[name="id"]').val(data.id);
if(data.resign == 1)
{
//$('[name="resign"]').val(data.resign);
$('#resign').prop('checked', true);
}
$('[name="resign"]').val(data.resign);
$('#modal_formterminate').modal('show'); // show bootstrap modal when complete loaded
$('.modal-title').text('Terminate Employee'); // Set title to Bootstrap modal title
},
error: function (jqXHR, textStatus, errorThrown)
{
alert('Error get data from ajax');
}
});
}
Change Model to
function terminate_emp($where,$data)
{
$this->db->where($where);
$this->db->update('employees', $data);
}