public function uploadReport(Request $request)
 {
     $id_kategori = $request->get('kategori');
     $slug = $request->get('slug');
     // laporan
     date_default_timezone_set("UTC");
     $laporan = Input::file('laporan');
     $ext = $laporan->getClientOriginalExtension();
     $laporan_filename = $id_kategori . "-" . Date("YmdHis", time()) . "." . $ext;
     $laporan->move(public_path() . '/pengaduan-laporan', $laporan_filename);
     Pengaduan::addLaporan($slug, $laporan_filename);
     return redirect('pengaduan/' . $slug);
 }