Edit Data Checkbox CI3 Mysql

CONTROLLER
<?php
defined('BASEPATH') or exit('No direct script access allowed');

class Auth extends CI_Controller
{
  function update($id){
    $this->data['user']                 = $this->Auth_model->get_by_id($id);
    $this->data['get_all_data_access']  = $this->Dataaccess_model->get_all();

    $this->load->view('back/auth/user_edit', $this->data);
  }
}

MODEL
<?php
defined('BASEPATH') or exit('No direct script access allowed');

class Auth_model extends CI_Model
{
  function get_by_id($id){
    $this->db->where($this->id, $id);
    return $this->db->get($this->table)->row();
  }
}


<?php
defined('BASEPATH') or exit('No direct script access allowed');

class Dataaccess_model extends CI_Model
{
  function get_all(){
    return $this->db->get($this->table)->result();
  }
}

VIEW
<?php
$this->db->where('user_id', $user->id_users);
$dataAccessOld = $this->db->get('users_data_access')->result();
print_r($dataAccessOld);

foreach ($get_all_data_access as $alldataAccess) {
  foreach($dataAccessOld as $oldDataAccess){
    if($oldDataAccess->data_access_id == $alldataAccess->id_data_access){
      $checked = 'checked';
    }else{$checked = '';}
  }
?>

<div class="pretty p-icon p-smooth">
  <input type="checkbox" name="data_access_id[]" value="<?php echo $alldataAccess->id_data_access ?>" <?php echo $checked ?>>
  <div class="state p-success">
    <i class="icon fa fa-check"></i>
    <label><?php echo $alldataAccess->data_access_name ?></label>
  </div>
</div>
<?php } ?>