我想在菜单下动态添加子菜单，我已经在网站中创建了菜单选项，但子菜单未添加

Question

我已经在网站上动态创建了菜单，但想在菜单下添加子菜单，但没有得到结果。

型号：子类别

`

命名空间App \ Http \ Controllers;

使用App \ Subcategory; 使用Illuminate \ Http \ Request;

使用App \ Category; 使用会话；

class subCategoriesController扩展了Controller {     / **      *显示资源清单。      *      * @return \ Illuminate \ Http \ Response      * /     公共功能index（）     {         返回视图（'admin.Subcategory.index'）-> with（'subcategories'，Subcategory :: all（））;     }

/**
 * Show the form for creating a new resource.
 *
 * @return \Illuminate\Http\Response
 */
public function create()
{
    return view('admin.Subcategory.create')->with('subcategories', Subcategory::all())->with('categories', Category::all());

}

/**
 * Store a newly created resource in storage.
 *
 * @param  \Illuminate\Http\Request  $request
 * @return \Illuminate\Http\Response
 */
public function store(Request $request)
{
    $this->validate($request, [

        'sub_cat_name' =>'required',
        'sub_cat_id' => 'required'


    ]);

    $data=[

        'sub_cat_id'=>$request->sub_cat_id,
        'sub_cat_name'=>$request->sub_cat_name,
   ];

    $subcategory=Subcategory::create($data);
    Session::flash('success', 'Subcategory has created successfully');

    return redirect()->back();

}

/**
 * Display the specified resource.
 *
 * @param  int  $id
 * @return \Illuminate\Http\Response
 */
public function show($id)
{
    //
}

/**
 * Show the form for editing the specified resource.
 *
 * @param  int  $id
 * @return \Illuminate\Http\Response
 */
public function edit($id)
{
    $subcategory=Subcategory::find($id);

    return view('admin.Subcategory.edit')->with('subcategories', $subcategory)->with('subcategory', $subcategory);


}

/**
 * Update the specified resource in storage.
 *
 * @param  \Illuminate\Http\Request  $request
 * @param  int  $id
 * @return \Illuminate\Http\Response
 */
public function update(Request $request, $id)
{
    $subcategory=Subcategory::find($id);

    $subcategory->sub_cat_name=$request->sub_cat_name;

    $subcategory->sub_cat_id=$request->sub_cat_id;

    $subcategory->save();



    Session::flash('success', 'SubCategory updated successfully');

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

/**
 * Remove the specified resource from storage.
 *
 * @param  int  $id
 * @return \Illuminate\Http\Response
 */
public function destroy($id)
{
    $subcategory=Subcategory::find($id);

    $subcategory->delete();

    Session::flash('success', 'Subcategory has created successfully');

    return redirect()->back();

}

}