无限级分类

public function tree($parent_id = 0)
    {
        $rows = Category::where('parent_id', $parent_id)->orderBy('sort_order','ASC')->get();
        $arr = array();

        if (sizeof($rows) != 0){
            foreach ($rows as $key => $val){
                $val['list'] = $this->tree($val['cat_id']);
                $arr[] = $val;
            }
            return $arr;
        }

    }

   public function category_list(Request $request){
 
    
             $Category= $this->tree();
             return view('admin.category_list',[
                   'date'=>$Category
              ]);

  }

作者：远方不会远
链接：https://www.jianshu.com/p/a613a1d377ce
來源：简书
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