public function add()
    {
        $this->form_validation->set_rules('sku', 'Sku', 'required');
        $this->form_validation->set_rules('name', 'Name', 'required');
        $this->form_validation->set_rules('price', 'Price', 'required');
    //  $this->form_validation->set_rules('file_upload_manual_slike', 'Images', 'optional');


        $data['title'] = "adding";
        if ($this->form_validation->run() === FALSE)
        {
            $this->load->view('templates/header', $data);
            $this->load->view('templates/sidebar');
            $this->load->view('admin/produkt/product_form');
            $this->load->view('templates/footer');

        }
        else
        {
            $data['uspeh'] = "Success!";
            $this->produkt_model->dodaj_produkt();
            //$this->load->view('admin/produkt/product_form',$data);
            redirect($this->config->item('base_url'), 'refresh');

            $this->do_upload($this->db->insert_id());
        }
    }

    function do_upload($id_produkta)
    {
        $file_element_name = "file_upload_manual_slike";
        if ($status != "error")
       {
          $config['upload_path'] = './files/';
          $config['allowed_types'] = 'gif|jpg|png|doc|txt';
          $config['max_size']  = 1024 * 8;
          $config['encrypt_name'] = TRUE;

          $this->load->library('upload', $config);

          if (!$this->upload->do_upload($file_element_name,$id_produkta))
          {
             $status = 'error';
             $msg = $this->upload->display_errors('', '');
          }
          else
          {
             $data = $this->upload->data();
             $file_id = $this->produkt_model->dodaj_sliko($data['file_name']);
             if($file_id)
             {
                $status = "success";
                $msg = "File successfully uploaded";
             }
             else
             {
                unlink($data['full_path']);
                $status = "error";
                $msg = "Something went wrong when saving the file, please try again.";
             }
          }
       }
    }