这是一个二级分类

数据表

怎么遍历出这个二级分类 

利用递归

public static function getLei($pid){

$date=DB::table('cates')->where('pid','=',$pid)->get();

$d=[];

foreach ($date as $key => $value) {

$value->sub=self::getLei($value->id);

$d[]=$value;

}

return $date;

}

调用

public function aa()

{        $list=self::getLei(0);

          return view('',['list'=>$list]);

}

遍历

@foreach($leilei as $row)

{{$row->name}}

@foreach($row->sub as $rows)

{{$rows->name}}

@endforeach@endforeach