Clicking on CI Pagination links produces wrong queries - codeigniter

Question

I'm currently having problem when clicking on they pagination link of my site using CodeIgniter. The search function works fine, however, when I click on any of the pagination links, it seems like it does the filter again and again.
For example:
I choose "Rent" as my choice to search for:
Then click search I get 27 results. After that I click on the "2" pagination button at the bottom:
I get another 73 results and so on and so forth.
My Controller:
$this->load->library('pagination');
$search['base_url'] = base_url() . 'page_search/';
$search['per_page'] = 5;
$search['num_links'] = 5;
$search['num_tag_open'] = '<li>';
$search['num_tag_close'] = '</li>';
$search['first_link'] = 'First';
$search['first_tag_open'] = '<li class="first">';
$search['first_tag_close'] = '</li>';
$search['last_tag_open'] = '<li class="last">';
$search['last_tag_close'] = '</li>';
$search['next_tag_open'] = '<li>';
$search['next_tag_close'] = '</li>';
$search['prev_tag_open'] = '<li>';
$search['prev_tag_close'] = '</li>';
$search['last_link'] = 'Last';
$search['next_link'] = '»';
$search['prev_link'] = '«';
$search['full_tag_open'] = '<div class="pagination pagination-centered"><ul>';
$search['full_tag_close'] = '</ul></div>';
$search['cur_tag_open'] = '<li class="active"><a href="#">';
$search['cur_tag_close'] = '</a></li>';
$search['total_rows'] = $this->db->get_where( 'listing', $where )->num_rows();
$search['uri_segment'] = 2;
$config['use_page_numbers'] = TRUE;
$this->pagination->initialize( $search );
$this->db->order_by("id", "desc");
$this->db->where( $where );
$data['results'] = $this->db->get( 'listing', $search['per_page'], $this->uri->segment(2);
$data['rows'] = $this->db->get_where( 'listing', $where )->num_rows();
$data['content'] = 'website/page-search';
$this->load->view('template/website/theme', $data);
Which $where is the query which I am sure it works fine.
UPDATE:
Also I have this in my route:
$route['page_search/(:num)'] = "page_search/index/$1";
Here's the link to the live site http://angkor21.com/

Answer 1

You are posting your search form and making your $where statement, thats cool, but in page 2, is your $where statement working correctly? I think this is where you need to watch out for. Print your generated query in the second page like this:
$this->db->last_query();
You need to somehow pass on these search parameter(s) to the next page to correctly generate the $where condition. For example:
if( $this->input->post(null) ){ #if the form is submitted
$saleType = $this->input->post('sale_type');
$propType = $this->input->post('prop_type');
$city = $this->input->post('city');
$district = $this->input->post('district');
$commune = $this->input->post('commune');
}else{
$saleType = $this->uri->segment(3);
$propType = $this->uri->segment(5);
$city = $this->uri->segment(7);
$district = $this->uri->segment(9);
$commune = $this->uri->segment(11);
}
$search['base_url'] = base_url() . 'page_search/sale_type/'.$saleType.'/prop_type/'.$propType.'/city/'.$city.'/district/'.$district.'/commune/'.$commune.'/page/';
$search['uri_segment'] = 13;