search result from sql error with codeigniter's pagination index - codeigniter

Question

I have a table with the pagination. First, i select all data from my DB, and the pagination works perfectly.
Then, i started to filter the data (search certain data, example : using WHERE in SQL). The pagination's 1st index is working perfectly (showing only certain data) but when i click the next index (2nd, 3rd) the data is going back to default (the filter (WHERE, LIKE) is not working).
This is my model that used for the pagination (I think i made a mistake here) :
public function get_umat() {
$this->db->select('*')->from('msumat')->limit(10, $this->uri->segment(3));
$this->db->join('mskelas', 'msumat.kelas_id = mskelas.kelas_id');
$search = $this->input->post('ddl_search');
$kelas = $this->input->post('ddl_kelas');
$kelas1 = $this->input->post('ddl_kelas1');
$kelas2 = $this->input->post('ddl_kelas2');
$nama = $this->input->post('txt_nama');
$alamat = $this->input->post('txt_alamat');
$bulan = $this->input->post('ddl_bulan');
$bulan1 = $this->input->post('ddl_bulan1');
$bulan2 = $this->input->post('ddl_bulan2');
if($this->input->post('btn_search'))
{
if($search === 'nama')
$this->db->like('nama', $nama);
else if($search === 'kelas')
$this->db->where('mskelas.kelas_id', $kelas);
else if($search === 'range_kelas')
$this->db->where("mskelas.kelas_id BETWEEN $kelas1 AND $kelas2");
else if($search === 'alamat')
$this->db->like('alamat', $alamat);
else if($search === 'bulan_lahir')
$this->db->where("MONTH(tanggal_lahir) = $bulan");
else if($search === 'range_tanggal_lahir')
$this->db->where("MONTH(tanggal_lahir) BETWEEN $bulan1 AND $bulan2");
}
return $this->db->get()->result();
}
public function count_umat(){
return $this->db->count_all('msumat');
}
Then this is my pagination in controller (I think i need to modify the $config['total_rows']):
$config['base_url'] = site_url('/backend_umat/index');
$config['total_rows'] = $this->umat_m->count_umat();
$config['per_page'] = 10;
$config['uri_segment'] = 3;
$config['full_tag_open'] = '<div id="pagination">';
$config['full_tag_close'] = '</div>';
$this->pagination->initialize($config);
$data['pagination'] = $this->pagination->create_links();
I think the problems are :
I need to COUNT the search results (for each search) for $config['total_rows']
Somehow, i need to modify the model (get_umat()) to get things working
Any help is appreciated. Thanks :D

Answer 1

well in CI if you want to apply search with multiple filters it works for the first page and ci always look for url segments, for 2nd or 3rd page you need to send your all search parameters which you send for the first page through form, means you url should contain url segments then you can filter your search record because you are not submitting form for 2nd and 3rd page. i will suggest you to have look on this tutorial it has nice way to use search records with multiple filters and work perfect with pagination
CI Search on Tutorial Nettuts