save and edit share same method?

I use another approach.

Url call for adding new record:
front/add_record

Url call for editing existing record;
front/edit_record/415  
(in this example, I would edit record # 415)

Controller Front.php:

PHP Code:

public function add_record()
{
   $this->edit_record(0);
}

public function edit_record($id = 0)
{
   //set form validation rules
   if ($this->form_validation->run() == FALSE) {
      if ($id > 0) {
         $record = $this->qa_mdl->get_record($id);
      }
      else {
         $record = array(
           'id' => 0,
           'name' => NULL,
           'address' => NULL
         );
      }
      $data['record'] = $record;
      $this->load->helper('form');
      $this->load->view('form_record',$data);
   }
   else {
      $data = array(
         'name' => $this->input->post('name'),
         'address' => $this->input->post('address')
      );
      $this->qa_mdl->save_record($data,$id);
   }
} 


Model Qa_mdl.php:

PHP Code:

public function get_record($id) 
{
   $query = $this->db->get_where('qa_table','id=' .$id);
   if ($query->num_rows() > 0) {
       return $query->row_array();
   }
   else {
       return NULL;
   }
}

public function save_record($data,$id)
{
    if ($id > 0) {
      $this->db->update('qa_table',$data,'id='.$id);
    }
    else {
       $this->db->insert('qa_table',$data);
    }
} 


View form_record.php :

PHP Code:

<?php
// form validation errors here
extract($record);
echo form_open('front/edit_record/' . $id);
echo '<p>form_input('name',$name) . '</p>';
echo '<p>form_input('address', $address) . '</p>';
echo form_submit('submit', 'Submit form');
echo form_close();
?>