public function update($id)
 {
     $fpl = FPL::find($id);
     $fpl->id_pemohon = Auth::user()->id;
     $fpl->tanggal_permintaan = Carbon::parse(Input::get('tanggal_permintaan'));
     $fpl->jenis_permintaan = Input::get('jenis_permintaan');
     $fpl->no_ref_ga = Input::get('ref_ga');
     $fpl->pic = Input::get('pic');
     $fpl->trx_id = Input::get('trx_id');
     $fpl->periode_trx_id = Carbon::parse("01-" . Input::get('periode_trx_id'));
     $fpl->no_acc = Input::get('no_acc');
     $fpl->jumlah_dan_estimasi = Input::get('jumlah_estimasi');
     $fpl->save();
     $listperbaikan = Input::get('ids_perbaikan');
     if ($listperbaikan != '') {
         $listperbaikan = substr($listperbaikan, 0, -1);
         $perbaikan = explode(",", $listperbaikan);
         if (count($perbaikan > 0)) {
             for ($i = 0; $i < count($perbaikan); $i++) {
                 $fplperbaikan = FPLPerbaikan::find($perbaikan[$i]);
                 $fplperbaikan->fpl_id = $fpl->id;
                 $fplperbaikan->save();
             }
         }
     }
     //delete unused
     $nowperbaikan = array();
     foreach ($fpl->perbaikans as $key) {
         array_push($nowperbaikan, $key->id);
     }
     $perbaikan = explode(",", $listperbaikan);
     $diff_perbaikan = array_diff($nowperbaikan, $perbaikan);
     foreach ($diff_perbaikan as $key) {
         FPLPerbaikan::where('id', '=', $key)->delete();
     }
     $listpembelian = Input::get('ids_pembelian');
     if ($listpembelian != '') {
         $listpembelian = substr($listpembelian, 0, -1);
         $pembelian = explode(",", $listpembelian);
         if (count($pembelian) > 0) {
             for ($k = 0; $k < count($pembelian); $k++) {
                 $fplpembelian = FPLPembelian::find($pembelian[$k]);
                 $fplpembelian->fpl_id = $fpl->id;
                 $fplpembelian->save();
             }
         }
     }
     //delete unused
     $nowpembelian = array();
     foreach ($fpl->pembelians as $key) {
         array_push($nowpembelian, $key->id);
     }
     $pembelian = explode(",", $listpembelian);
     $diff_pembelian = array_diff($nowpembelian, $pembelian);
     foreach ($diff_pembelian as $key) {
         FPLPembelian::where('id', '=', $key)->delete();
     }
     $listkebutuhan = Input::get('ids_kebutuhan');
     if ($listkebutuhan != '') {
         $listkebutuhan = substr($listkebutuhan, 0, -1);
         $kebutuhan = explode(",", $listkebutuhan);
         if (count($kebutuhan) > 0) {
             for ($l = 0; $l < count($kebutuhan); $l++) {
                 $fplkebutuhan = FPLKebutuhan::find($kebutuhan[$l]);
                 $fplkebutuhan->fpl_id = $fpl->id;
                 $fplkebutuhan->save();
             }
         }
     }
     //delete unused
     $nowkebutuhan = array();
     foreach ($fpl->kebutuhans as $key) {
         array_push($nowkebutuhan, $key->id);
     }
     $kebutuhan = explode(",", $listkebutuhan);
     $diff_kebutuhan = array_diff($nowkebutuhan, $kebutuhan);
     foreach ($diff_kebutuhan as $key) {
         FPLKebutuhan::where('id', '=', $key)->delete();
     }
     $listspec = Input::get('ids_spec');
     if ($listspec != '') {
         $listspec = substr($listspec, 0, -1);
         $spec = explode(",", $listspec);
         if (count($spec) > 0) {
             for ($m = 0; $m < count($spec); $m++) {
                 $fplspec = FPLSpec::find($spec[$m]);
                 $fplspec->fpl_id = $fpl->id;
                 $fplspec->save();
             }
         }
     }
     //delete unused
     $nowspec = array();
     foreach ($fpl->specs as $key) {
         array_push($nowspec, $key->id);
     }
     $spec = explode(",", $listspec);
     $diff_spec = array_diff($nowspec, $spec);
     foreach ($diff_spec as $key) {
         FPLSpec::where('id', '=', $key)->delete();
     }
     $mengetahui = Input::get('mengetahui');
     MengetahuiFPL::where('fpl_id', '=', $id)->delete();
     for ($j = 0; $j < count($mengetahui); $j++) {
         $stj = new MengetahuiFPL();
         $stj->fpl_id = $fpl->id;
         $stj->user_id = $mengetahui[$j];
         $stj->save();
     }
     // FPLSpec::where('fpl_id','=','')->delete();
     // FPLKebutuhan::where('fpl_id','=','')->delete();
     // FPLPembelian::where('fpl_id','=','')->delete();
     // FPLPerbaikan::where('fpl_id' , '=' , '')->delete();
     Session::flash('success', 'Data telah diubah.');
     return Redirect::to('/admin/fpl');
 }