我想使用laravel显示基于子类别的相关产品

我正在尝试显示基于子类别的相关产品。在该菜单中，当我单击父类别时，它显示产品，但单击子类别时，产品未显示，我希望在单击子类别时显示产品

有人知道吗

提前感谢您的帮助：）

类别表

] 产品表

product has  id product_name ,product_image,price,cate_id 

视频

请观看视频以便更好地理解，谢谢

---

类别模型

public function category()
{
return $this->hasMany('App\category','p_id');
 }

public function category()
{
   return $this->hasMany('App\category','p_id','id');
}

控制器

public function procateg(Request $request){
 $cate_name=$request->cate_name;       
 $product=DB::table('category')
 ->leftjoin('products','category.id','=','products.cate_id')  
 ->where('category.cate_name','=',$cate_name)->paginate('8');    
  return view('front_end/products',compact('product'));   
 }

public function procateg(Request $request){
   $cate_name=$request->cate_name;       
   $product  = DB::table('category')
             ->Join('products','category.id','=','products.cate_id')  
             ->where('category.cate_name','=',$cate_name)->get();    
   return view('front_end/products',compact('product'));   
 }

HTML视图

<div class="nav-panel__nav-links nav-links">
    <ul class="nav-links__list">
        @foreach(App\category::with('category')->where('p_id',0)->get() as $firstmenu)
            <li class="nav-links__item  nav-links__item--has-submenu ">
                <a id="cate" class="nav-links__item-link" href="{{url('/product/'.$firstmenu- 
        >cate_name)}}">
                    <div class="nav-links__item-body">
                        {{$firstmenu->cate_name}}
                        <svg class="nav-links__item-arrow" width="9px" height="6px">
                            <use xlink:href="{{url('public/assets/images/sprite.svg#arrow-rounded-down-9x6')}}">
                            </use>
                        </svg>
                    </div>
                </a>
                <div class="nav-links__submenu nav-links__submenu--type--megamenu nav-links__submenu-- 
         size--nl">
                    <!-- .megamenu -->
                    <div class="megamenu ">
                        <div class="megamenu__body">
                            <div class="row">
                                @foreach($firstmenu->category as $secondmenu)
                                    <div class="col-6">
                                        <ul class="megamenu__links megamenu__links--level--0">
                                            <li class="megamenu__item  megamenu__item--with-submenu ">
                                                <a href="{{url('product'.'/'.$firstmenu->cate_name.'/'.$secondmenu->cate_name)}}">
                                                    {{$secondmenu->cate_name}}</a>
                                                <ul class="megamenu__links megamenu__links--level--1">
                                                    @foreach($secondmenu->category as $thirdmenu)
                                                        <li class="megamenu__item"><a href="{{url('product'.'/'.$firstmenu- 
          >cate_name.'/'.$secondmenu->cate_name.'/'.$thirdmenu->cate_name)}}">
                                                                {{$thirdmenu->cate_name}}</a>
                                                        </li>
                                                    @endforeach
                                                </ul>
                                            </li>
                                        </ul>
                                    </div>
                                @endforeach
                            </div>
                        </div>
                    </div>
                    <!-- .megamenu / end -->
                </div>
            </li>
        @endforeach
    </ul>
</div>

---

类别模型

public function category()
{
return $this->hasMany('App\category','p_id');
 }

public function category()
{
   return $this->hasMany('App\category','p_id','id');
}

控制器

public function procateg(Request $request){
 $cate_name=$request->cate_name;       
 $product=DB::table('category')
 ->leftjoin('products','category.id','=','products.cate_id')  
 ->where('category.cate_name','=',$cate_name)->paginate('8');    
  return view('front_end/products',compact('product'));   
 }

public function procateg(Request $request){
   $cate_name=$request->cate_name;       
   $product  = DB::table('category')
             ->Join('products','category.id','=','products.cate_id')  
             ->where('category.cate_name','=',$cate_name)->get();    
   return view('front_end/products',compact('product'));   
 }

---

为什么要创建一个问题，然后将其删除，然后使用相同的问题再次创建？似乎您希望显示产品，但从类别表中检索时，根据您的关系，产品和类别之间也应该存在关系，使用该关系，您应该能够检索产品。添加到您的查询：->选择（'product.*'，'category.*'）我使用了此查询，但在应用您的代码后，当我单击“子类别”时，似乎404未找到不工作快乐编码：）