public function deleteDetail() { if (isset($_POST)) { $id = $_POST['id']; $det = DetailPenjualan::findOrFail($id); $penjualan = Penjualan::where('id', '=', $det->penjualan_id)->first(); // dd($penjualan->id); if (DetailPenjualan::destroy($id)) { $barangs = DetailPenjualan::where('penjualan_id', '=', $penjualan->id)->get(); $nominal = 0; foreach ($barangs as $key => $value) { $nominal += $value->total; } $penjualan->nominal = $nominal; $penjualan->save(); } } }