//ini model

function get_crud_all_chasis() {
            $query=$this->db->query("select * from mstchas");
            return $query->result();

        }
        function last_id()
        {

        $result = $this->db->select_max('MstChasID')->get('mstchas')->row();

        return $result;
        }


ini view
<form method="POST" action="<?php echo site_url('mstchasis/proses_tambah_chasis'); ?>">
            <legend>
      <table  class="table table-bordered " >
        <tr>
          <td width="166"><input type="hidden" name="MstChasID" class="form-control"/></td>
        </tr>
         <tr>
          <td>No Chasis</td>
          <td width="166"><input type="text" name="MstChasNo" class="form-control" value="<?php echo $new_id; ?>" readonly/></td>
        </tr>
        <tr>
          <td>Mobil</td>
          <td width="166"><input type="text" name="MStChasMaker" placeholder="MStChasMaker" class="form-control" /></div></td>
        </tr>
        <tr>
          <td>Approval 2</td>
          <td><input type="text" name="MStChasModel" placeholder="MStChasModel" class="form-control"/></td>
        </tr>
        <tr>
          <td>Approval 3</td>
          <td><input type="text" name="MStChasType" placeholder="MStChasType" class="form-control"/></td>

          <!--<td>&nbsp;</td>-->
          <tr>
          <td colspan="2" ><input type="submit" name="simapn" value="Simpan" class="btn btn-primary btn-lg  ">&nbsp;&nbsp;&nbsp;<input type="reset" name="reset" value="Reset" class="btn btn-inverse btn-lg  "></td>
        </tr>
    </table>
    </form>