public function import(Request $request){
        try {
            $file = $request->file('dokumen');

            $extenseion = $file->getClientOriginalExtension();
            // dd($extenseion);
            $nama_file = date('YmdHis').'.'.$extenseion;

            $file->storeAs('uploads',$nama_file);

            // dd();
            Excel::import(new ProdukImport, storage_path('app/uploads/'.$nama_file));
            \Session::flash('sukses','Data berhasil diimport');
        } catch (\Exception $e) {
            \Session::flash('gagal',$e->getMessage());
        }

        return redirect('/produk');
    }