Codeigniter Checkbox - database

Question

Can you guys tell me what i'm doing wrong here in my code? I tried to post the data inside these checkboxes to database
here is the view.php
(more code)
<div class="form-group">
<label class="control-label col-md-3">Infection</label>
<div class="col-md-9">
<input type="checkbox" name="infectionType[]" value="vap"> VAP
<input type="checkbox" name="infectionType[]" value="hap"> HAP
<input type="checkbox" name="infectionType[]" value="isk"> ISK
<input type="checkbox" name="infectionType[]" value="iad"> IAD
</div>
</div>
and this is my controller.php
public function insert_surveilance(){
$data=array(
(more code)
'vap' => $this->input->post('vap'),
'hap' => $this->input->post('hap'),
'isk' => $this->input->post('isk'),
'iad' => $this->input->post('iad'),
(more code)
);
$data[]=
$insert = $this->surveilance_model->insert_surveilance($data);
echo json_encode(array("status"=>TRUE));
}
then this is my model.php
public function insert_surveilance($data){
$this->db->insert($this->table, $data);
return $this->db->insert_id();
}
this is the save function
...
function save(){
var url;
if(save_method == 'add'){
url="<?php echo site_url('surveilance/insert_surveilance')?>";
} else {
url="<?php echo site_url('surveilance/edit_surveilance')?>";
}
$.ajax({
url : url,
type: "POST",
data: $('#form').serialize(),
dataType: "JSON",
success: function(data)
{
//if success close modal and reload ajax table
$('#modal_form').modal('hide');
location.reload();// for reload a page
},
error: function (jqXHR, textStatus, errorThrown)
{
alert('Failed adding data');
}
});
}

Answer 1

First of all var_dump($this->input->post()) in your controller, if it shows post data then try replacing below code.
public function insert_surveilance(){
$request_params = $this->input->post('infectionType');
$data=array(
(more code)
'vap' => $request_params[0],
'hap' => $request_params[1],
'isk' => $request_params[2],
'iad' => $request_params[3],
(more code)
);
$data[]=
$insert = $this->surveilance_model->insert_surveilance($data);
echo json_encode(array("status"=>TRUE));
}