dari view(header.php) ke controller(admin.php) balik lg ke view(laporan.php)

tambahkan skrip ini di file admin.php seblm tutup kurawal paling bawah.

function cetak_laporan_buku(){
          $data['buku'] = $this->M_perpus->get_data('buku')->result();
          $this->load->view('admin/header');
          $this->load->view('admin/laporan_buku', $data);
          $this->load->view('admin/footer');
        }

        function laporan_print_buku(){
          $data['buku'] = $this->M_perpus->get_data('buku')->result();
          $this->load->view('admin/laporan_print_buku',$data);
        }

        function laporan_pdf_buku(){
          $this->load->library('dompdf_gen');

          $data['buku'] = $this->M_perpus->get_data('buku')->result();

          $this->load->view('admin/laporan_pdf_buku', $data);

         $paper_size  = 'A4'; // ukuran kertas
         $orientation = 'landscape'; //tipe format kertas potrait atau landscape
         $html = $this->output->get_output();

         $this->dompdf->set_paper($paper_size, $orientation);
         //Convert to PDF
         $this->dompdf->load_html($html);
         $this->dompdf->render();
         $this->dompdf->stream("laporan_data_buku.pdf", array('Attachment'=>0));
         // nama file pdf yang di hasilkan
        }

        Function cetak_laporan_anggota(){
          $data['anggota'] = $this->M_perpus->get_data('anggota')->result();
          $this->load->view('admin/header');
          $this->load->view('admin/laporan_anggota', $data);
          $this->load->view('admin/footer');
        }

        function laporan_print_anggota(){
          $data['anggota'] = $this->M_perpus->get_data('anggota')->result();
          $this->load->view('admin/laporan_print_anggota',$data);
        }

        function laporan_pdf_anggota(){
          $this->load->library('dompdf_gen');

          $data['anggota'] = $this->M_perpus->get_data('anggota')->result();

          $this->load->view('admin/laporan_pdf_anggota', $data);

         $paper_size  = 'A4'; // ukuran kertas
         $orientation = 'landscape'; //tipe format kertas potrait atau landscape
         $html = $this->output->get_output();

         $this->dompdf->set_paper($paper_size, $orientation);
         //Convert to PDF
         $this->dompdf->load_html($html);
         $this->dompdf->render();
         $this->dompdf->stream("laporan_data_anggota.pdf", array('Attachment'=>0));
         // nama file pdf yang di hasilkan
        }

        function laporan_transaksi(){
          $dari = $this->input->post('dari');
          $sampai = $this->input->post('sampai');
          $this->form_validation->set_rules('dari','Dari Tanggal','required');
          $this->form_validation->set_rules('sampai','Sampai Tanggal','required');

          if($this->form_validation->run() != false){

          $data['laporan'] = $this->db->query("select * from peminjaman p,detail_pinjam d,
          buku b,anggota a where d.id_buku=b.id_buku and p.id_anggota=a.id_anggota
          and p.id_pinjam=d.id_pinjam and date(tanggal_input) >= '$dari'")->result();

          $this->load->view('admin/header');
          $this->load->view('admin/laporan_filter_transaksi',$data);
          $this->load->view('admin/footer');
        }else{
          $this->load->view('admin/header');
          $this->load->view('admin/laporan_transaksi');
          $this->load->view('admin/footer');
        }
        }

        function laporan_print_transaksi(){
          $dari = $this->input->get('dari');
          $sampai = $this->input->get('sampai');

          if($dari != "" && $sampai != ""){
            $data['laporan'] = $this->db->query("select * from peminjaman p,detail_pinjam d,buku b,anggota a where d.id_buku=b.id_buku and p.id_anggota=a.id_anggota and p.id_pinjam=d.id_pinjam and date(tanggal_input) >= '$dari'")->result();
            $this->load->view('admin/laporan_print_transaksi',$data);
          }else{
            redirect("admin/laporan_transaksi");
          }
        }

        function laporan_pdf_transaksi(){
          $this->load->library('dompdf_gen');
          $dari = $this->input->get('dari');
          $sampai = $this->input->get('sampai');

          $data['laporan'] = $this->db->query("select * from peminjaman p,detail_pinjam d,buku b,anggota a
          where d.id_buku=b.id_buku and p.id_anggota=a.id_anggota and p.id_pinjam=d.id_pinjam and date(tanggal_input)
          >= '$dari'")->result();

         $this->load->view('admin/laporan_pdf_transaksi', $data);

         $paper_size  = 'A4'; // ukuran kertas
         $orientation = 'landscape'; //tipe format kertas potrait atau landscape
         $html = $this->output->get_output();

         $this->dompdf->set_paper($paper_size, $orientation);
         //Convert to PDF
         $this->dompdf->load_html($html);
         $this->dompdf->render();
         $this->dompdf->stream("laporan_data_transaksi.pdf", array('Attachment'=>0));
        }