public function insertParent(Request $request)
    {
        $validation = Validator::make($request->all(), [
            'title' => 'required',
        ]);
        if ($validation->fails()) {
            return redirect()->back()->withInput()->withErrors($validation);
        }
        $menu = Menu::create([
            'position'  => 0,
            'menu_type' => 2,
            'icon'      => $request->icon != '' ? $request->icon : 'fa-database',
            'name'      => ucfirst(camel_case($request->title)),
            'title'     => $request->title,
            'parent_id' => null,
        ]);
        $menu->roles()->sync($request->input('roles', []));

        return redirect()->route('menu');
    }