Pagination with search in Codeigniter is not working - codeigniter

Question

I have a problem in pagination with search in codeigniter
URL is not change when select the other page link
the data is not change when select the other link
This my controller
public function search_code(){
$this->load->library('pagination');
$param = new stdClass();
$param->item_code = $this->input->get('by_item_code');
$param->description = $this->input->get('by_description');
if (!isset($page) || $page == '') {
$page = 1;
}
$param->per_page = 50;
$param->limit = ($page - 1) * $param->per_page;
$paginate_url = base_url('warehouse/search_code?item_code='.$param->item_code.'&by_description='.$param->description.'&page='.($page+1));
$data['total_result'] = $this->m_stock->count_stock_search ($param);
$config['uri_segment'] = 3;
$config['num_links'] = 4;
$config['base_url'] = $paginate_url;
$config['total_rows'] = $data['total_result'];
$config['per_page'] = $param->per_page;
$config['use_page_numbers'] = TRUE;
$config['page_query_string'] = TRUE;
$this->pagination->initialize($config);
$data['pagination'] = $this->pagination->create_links();
$data['item'] = $this->m_stock->search_code ($param);
$this->load->view('v_all_stocks', $data);
}
This my model
function search_code($param){
$result = array();
$sql = "select ic.id, ic.item_code, ic.description, maxdt.maxdt, lc.balance,lc.dt,lc.createdate,lc.id_lines_code, io.ONHANDQTY ";
$sql .= "from tbl_item_code ic ";
$sql .= "left join ( tbl_lines_code lc inner join ( select id, max(createdate) maxdt from tbl_lines_code where active = 1 group by id ) maxdt ";
$sql .= "on lc.id = maxdt.id and lc.createdate = maxdt.maxdt ) on ic.id = lc.id ";
$sql .= "left join item_ostendo io on io.ITEMCODE = ic.item_code ";
$sql .= "where ic.active = 1 ";
if ($param->item_code != '') {
$sql .= "AND ic.item_code LIKE '%$param->item_code%' ";
}
if ($param->description != '') {
$sql .= "AND ic.description LIKE '%$param->description%' ";
}
$sql .= "group by ic.id order by ic.item_code ";
if ($param->limit > 0)
$sql .= " LIMIT ".$param->limit.", ".$param->per_page;
else
$sql .= " LIMIT ".$param->per_page;
$query = $this->db->query($sql);
if ($query->num_rows() > 0) {
$result = $query->result();
}
return $result;
}
and about view i checked it's can working
but i don't know why i select the link of number the data is show like the last page but the number of link is working
Show all data not search yet the link show like this
when search show like this
but when select number 2 of link it's show like this and the data is same every page

Answer 1

You need to change your:
$paginate_url = base_url('warehouse/search_code?item_code='.$param->item_code.'&by_description='.$param->description.'&page='.($page+1));
This:
$config['uri_segment'] = 3;
defines that segment for the offset clause.
I would suggest:
$query = "?item_code='.$param->item_code.'&by_description='.$param->description.'&page='.($page+1))";
$paginate_url = base_url('warehouse/search_code/page/').$query;
$config['uri_segment'] = 4;
Take this as offset:
$param->limit = $this->uri->segment(4);

Answer 2

You have to change paging base url as below :
$paginate_url = base_url('warehouse/search_code').'?item_code='.$param->item_code.'&by_description='.$param->description;