สอบถามครับ pagination ci ค่า get ไม่ไปครับ

ผมทำระบบค้นหา แล้ว มี pagination ครับ  form  method ="get" ค้นหาครั้งแรก จะได้ค่าที่ต้องการแล้ว แต่พอกดเปลี่ยนหน้า  ค่า parameter  ไม่ตามไปด้วยนะครับ

ผมต้องเพิ่มตรงไหนครับ


controller

public function index()
	{
		////////////////////

		$data['page'] ="Test";

		$this->load->view('public/templates/vwHeader',$data);
	    ///////////////////////

		//$key = "";
		$key= $this->input->get('keyword');
		

		$count_row = $this->Test_model->count_row($key);

		$config["base_url"] = site_url( "test/index/");		
		$config["total_rows"] = $count_row; 
		$config["uri_segment"] = 3;		
	    $config["per_page"] = 21;
	    $choice = $config["total_rows"] / $config["per_page"];
	    $config["num_links"] = 4;
		$config['use_page_numbers'] = true;		
		$page = ($this->uri->segment($config["uri_segment"] )) ? $this->uri->segment($config["uri_segment"] ) : 0;
		// styling/html stuff
		$config['full_tag_open'] = '<ul class="pagination pagination-sm inline">';
		$config['full_tag_close'] = '</ul><!--pagination-->';
		$config['first_link'] = 'First';
		$config['first_tag_open'] = '<li class="prev page">';
		$config['first_tag_close'] = '</li>' . "
";
		$config['last_link'] = 'Last';
		$config['last_tag_open'] = '<li class="next page">';
		$config['last_tag_close'] = '</li>' . "
";
		$config['next_link'] = 'Next &raquo;';
		$config['next_tag_open'] = '<li class="next page">';
		$config['next_tag_close'] = '</li>' . "
";
		$config['prev_link'] = '&laquo; Previous';
		$config['prev_tag_open'] = '<li class="prev page">';
		$config['prev_tag_close'] = '</li>' . "
";
		$config['cur_tag_open'] = '<li class="active"><a href="javascript:void();">';
		$config['cur_tag_close'] = '</a></li>';
		$config['num_tag_open'] = '<li class="page">';
		$config['num_tag_close'] = '</li>' . "
";
		
		$this->pagination->initialize($config);
		$data["pagination"] = $this->pagination->create_links();

		$data['query']  = $this->Test_model->get_project($page,$config["per_page"],$key);

	    //////////////////////
		$this->load->view('public/pages/vwTest',$data);
		$this->load->view('public/templates/vwFooter');
	}

model   db เป็น sql server ครับ

 public function get_project($page,$limit,$key){
        $whereSql ="";

        if($key != ""){

	       	$whereSql .= "AND Prop_HeadLine LIKE '%".$key."%'";
	    }

        $sql = "SELECT * FROM ( ";
        $sql .= " SELECT  *  ";
        $sql .= ",row_number() OVER (ORDER BY PropId DESC) AS resultNum ";        
        $sql .= " FROM tbl_Properties ";
        $sql .= " WHERE 1 = 1 ";

        $page = $page-1;
        if($page <= 0 || $page == "" ){
        	$page = 0;	
        }

        $limitStart = $page * $limit+1;
        $limitEnd = $limitStart+$limit;
        $sql .= $whereSql." ) tmp ";
        $sql .=" WHERE tmp.resultNum between ".$limitStart." AND ".$limitEnd." ";
        $query = $this->db->query($sql);
        $result= $query->result();
        return $result;



        }

views

<div class="container main-container">

<h1>Property lits</h1>
<div class="row">

<form class="form-inline" action="<?php echo base_url('test/index')?>" method="get">
 
  <div class="form-group">
    <label >Keyword</label>
    <input type="text" name="keyword" class="form-control" >
  </div>
  <button type="submit" class="btn btn-default">submit</button>
</form>

</div>

<table class="table">
<thead>
<tr>
<th>PropId</th>
<th>Prop_HeadLine</th>
<th>BedTypeId</th>
<th>Prop_Unit_No</th>
<th>PropTypeId</th>
</tr>
</thead>

<tbody>
	<?php 
	foreach ($query as $row) {
	?>
<tr>
<td><?php echo $row->PropId;?></td>
<td><?php echo $row->Prop_HeadLine;?></td>
<td><?php echo $row->BedTypeId;?></td>
<td><?php echo $row->Prop_Unit_No;?></td>
<td><?php echo $row->PropTypeId;?></td>
</tr>
<?php } ?>


</tbody>





</table>

<div class="row">

<td><?php echo $pagination;?></td>

</div>

  อันนี้ไม่แน่ใจ คงต้องไล่ดู

หรือลองดูเนื้อหานี้เป็นแนวทาง

ได้แล้วครับ

เพิ่ม
$config['suffix'] = '?' . http_build_query($_GET, '', "&");