[SOLVED] can't save transaction without details

[eluser]maria clara[/eluser]
here's my save functions in my MODEL:

Code:

function save_detail($id,$rows) //Query for saving the company details
    {
        $this->db->where('user_id', $id);
        $this->db->delete('sec_companyaccess');
        
        foreach ($rows as $row)
        {
            $rdata = explode('|', $row);
            
            $data['user_id'] = $id;
            $data['company_id'] = $rdata[3];            
            
            $this->db->insert('sec_companyaccess', $data);
        }
    }
    
    
    
    function save($data,$item,$details) //Save user query
    {

        if ($item=='')    //Add new user
            {
            $this->db->trans_start();
            $data['password'] = md5($this->input->post('password'));    
            $data['status'] = 1;            
            $this->db->insert('sec_users', $data);
            $item = $this->db->insert_id();
            $this->save_detail($item,$details);
            $this->db->trans_complete();                    
            }
        else            //Update/Modify user
            {
            $this->db->trans_start();
            $this->db->where('user_id', $item);
            $this->db->update('sec_users', $data);
            $this->save_detail($item,$details);        
            $this->db->trans_complete();
            }
            
        return $item;    
    }