/**
* 关联查询
* @param $relation
* @param \Closure $callback 由于此处 Closure 接受的参数是 Table 类，所以下面调用时封装了一次
* @return static
*/
public function whereHas($relation, $callback)
{
$this->original->whereHas($relation, function ($query) use($callback) {
call_user_func($callback, lego_table($query));
});
return $this;
}
/**
* 关联查询
* @param $relation
* @param $callback
* @return static
*/
public function whereHas($relation, $callback)
{
$this->original->whereHas($relation, $callback);
return $this;
}