public function getPenjualan()
 {
     $tipe = isset($_POST['tipe']);
     $checkTipe = $_POST['tipe'] != 'default';
     // dd(!($_POST['mulai']) && !($_POST['selesai']));
     if ($checkTipe) {
         $penjualans = Penjualan::whereHas('customer', function ($q) {
             $q->where('tipe', '=', $_POST['tipe']);
         })->where('status', $_POST['status'])->get();
     } elseif (!$_POST['mulai'] && !$_POST['selesai']) {
         $penjualans = Penjualan::where('status', $_POST['status'])->orderBy('tgl_order', 'DESC')->get();
     } else {
         $penjualans = Penjualan::where('status', $_POST['status'])->whereBetween('tgl_order', [$_POST['mulai'], $_POST['selesai']])->get();
     }
     return View::make('admin.penjualans.get_penjualan', compact('penjualans'));
 }