Swift - Parse - 在whereKey条件下的指针列

Question

如何在whereKey条件下使用指针列（manufacturerId）的objectId？下面的尝试不起作用，总是返回0行。 如果我在whereKey上使用String类型（不是指针）的列，则查询返回正确的结果（仅包含在数组中的行）

尝试一次

Let array = ["en7fURKoqz", "Y8DAuS2ypK"]
Let query = PFQuery (className: "Posts")
Query.includeKey ("manufacturerId")
Query.whereKey ("manufacturerId", containedIn: array)

尝试两次

Let array = ["en7fURKoqz", "Y8DAuS2ypK"]
Let query = PFQuery (className: "Posts")
Query.includeKey ("manufacturerId")
Query.whereKey ("manufacturerId.objectId", containedIn: array)

此工作正常

Let array = ["en7fURKoqz", "Y8DAuS2ypK"]
Let query = PFQuery (className: "Posts")
Query.whereKey ("manufacturerIdString", containedIn: array)