public function edit_post(Request $request, $id)
 {
     $this->validate($request, ['name' => 'required', 'noidung' => 'required']);
     $inv = Inventories::findorFail($id);
     $inv->name = $request->name;
     $inv->content = $request->noidung;
     $inv->save();
     return \Redirect::to(route("inventories"))->with('success', "Profile updated success.");
 }