Codeigniter Pagination of Search Result

public function complain_list(){

        $login_info = $this->session->userdata('login_info');
        if ( $login_info['logged_in'] == 1 && $login_info['user_details']['status'] == 1 ):
            // echo $this->input->post('marked'); exit;



            $sdata= array(
               'sson_marked'        => '',
               'sson_rest_id'       => '',
               'sson_is_complain'   => '',
               'sson_rest_status'   => '',
               'sson_ticket_id'     => '',
               'sson_concern_person' => '',
               'sson_issue_type'    => '',
               'sson_start_date'    => '',
               'sson_end_date'      => '',
            );



            if(!empty($this->input->post())){
                $this->session->unset_userdata($sdata);
                $sdata['sson_marked']           = $this->input->post('marked');
                $sdata['sson_rest_id']          = ( $this->input->post('rest_id') !='' ) ? $this->input->post('rest_id') : '';
                $sdata['sson_is_complain']      = ( $this->input->post('is_complain') !='' ) ? $this->input->post('is_complain') : '';
                $sdata['sson_rest_status']      = ( $this->input->post('rest_status') !='' ) ? $this->input->post('rest_status') : '';
                $sdata['sson_ticket_id']        = ( $this->input->post('ticket_id') !='' ) ? $this->input->post('ticket_id') : '';
                $sdata['sson_concern_person']   = ( $this->input->post('concern_person') !='' ) ? $this->input->post('concern_person') : '';
                $sdata['sson_issue_type']       = ( $this->input->post('issue_type') !='' ) ? $this->input->post('issue_type') : '';
                $sdata['sson_start_date']       = $this->input->post('start_date');
                $sdata['sson_end_date']         = $this->input->post('end_date');
                $this->session->set_userdata($sdata);
            }

            // echo "<pre>";
            // print_r($this->session->userdata());
            // $this->session->unset_userdata('sson_search');
            // exit();

            $marked                 = $this->session->userdata('sson_marked');
            $id                     = $this->session->userdata('sson_rest_id');
            $is_complain            = $this->session->userdata('sson_rest_id');
            $rest_status            = $this->session->userdata('sson_rest_status');
            $ticket_id              = $this->session->userdata('sson_ticket_id');
            $concern_person         = $this->session->userdata('sson_concern_person');
            $issue_type             = $this->session->userdata('sson_issue_type');
            $start_date             = $this->session->userdata('sson_start_date');
            $end_date               = $this->session->userdata('sson_end_date');

            $data['start_date']     = $start_date;
            $data['end_date']       = $end_date;
            $data['is_complain']    = $is_complain;
            $data['rest_status']    = $rest_status;


            // Pagination code start by Shagor
            //echo $search.'-------'.$search_query.'-----'.$searchText;exit;

            $limit = 0;
            if( $this->uri->segment(2) !='' ):
                $limit = $this->uri->segment(2);
            endif;

            $this->load->library('pagination');
            $config['base_url']         = base_url('complain-list/');
            $config['total_rows']       = $this->Crm_complain->get_numrows_complain_list( $id, $start_date, $end_date, $is_complain, $rest_status, $ticket_id, $concern_person, $issue_type, $marked );
            $config['per_page']         = 20;
            $config['full_tag_open']    = "<ul class='pagination'>";
            $config['full_tag_close']   = "</ul>";
            $config['first_tag_open']   = "<li>";
            $config['first_tag_close']  = "</li>";
            $config['next_tag_open']    = "<li>";
            $config['next_tag_close']   = "</li>";
            $config['prev_tag_open']    = "<li>";
            $config['prev_tag_close']   = "</li>";
            $config['num_tag_open']     = "<li>";
            $config['num_tag_close']    = "</li>";
            $config['cur_tag_open']     = "<li class='active'><a>";
            $config['cur_tag_close']    = "</a></li>";
            $config['last_tag_open']    = "<li>";
            $config['last_tag_close']   = "</li>";

            $this->pagination->initialize($config);

            // Pagination code end by Shagor



            $data['complain_list']  = $this->Crm_complain->get_complain_list( $id, $start_date, $end_date, $is_complain, $rest_status, $ticket_id, $concern_person, $issue_type, $marked, $config['per_page'], $limit );


            // echo "<pre>"; print_r($data['marked_complain_list']); exit;
            // echo $data['marked_complain_list']; exit;
            $data['restData']       = $this->Crm_restaurantmodel->get_restaurantforsearch();
            $data['getConcernPer']  = $this->Crm_complain->getConcernPerson();
            $data['getIssueType']   = $this->Crm_complain->getIssueType();

            $this->session->set_userdata('cl_marked', $marked);
            $this->session->set_userdata('cl_rest_id', $id);
            $this->session->set_userdata('cl_is_complain', $is_complain);
            $this->session->set_userdata('cl_rest_status', $rest_status);
            $this->session->set_userdata('cl_ticket_id', $ticket_id);
            $this->session->set_userdata('cl_concern_person', $concern_person);
            $this->session->set_userdata('cl_issue_type', $issue_type);
            $this->session->set_userdata('cl_start_date', $start_date);
            $this->session->set_userdata('cl_end_date', $end_date);

            $data['user_id']        = $login_info['user_details']['id'];
            $data['main_content']   = 'complain/complain_list';
            $this->load->view('includes/template',$data);
        else:

            redirect('Auth');
        endif;

    }