ios - 解析指针值返回 nil 的查询

Question

我有一个表 UserProfile，其中有一个指针列(用户)指向相应的用户表。我正在尝试构建一个简单的查询来获取用户对象的 UserProfile。但是，查询返回 nil(对象 = 我的应用程序中的用户对象):

let profileQuery = PFQuery(className: "UserProfile")
                    profileQuery.whereKey("user", equalTo: object)
                    profileQuery.includeKey("user")
                    profileQuery.limit = 1
                    profileQuery.findObjectsInBackgroundWithBlock{
                        (results: [PFObject]?, error: NSError?) -> Void in

                        if error != nil{
                            print(error)
                        } else if let results = results as? [PFObject]! {

                            for result in results {
                                self.profile = result
                            }
                        }
                    }

知道为什么这个查询不起作用吗？谢谢!

使用 Mazel 的解决方案更新了代码:

query.findObjectsInBackgroundWithBlock {
        (objects: [PFObject]?, error: NSError?) -> Void in

        if error != nil {

            print(error)

        } else if let objects = objects as? [PFObject]! {

            for object in objects {

      let profileQuery = PFQuery(className: "UserProfile")
                    profileQuery.whereKey("user", equalTo: PFObject(outDataWithClassName: "_User", objectId: "\(object.objectId!)"))
                    //profileQuery.includeKey("user")
                    profileQuery.limit = 1
                    profileQuery.findObjectsInBackgroundWithBlock{
                        (results: [PFObject]?, error: NSError?) -> Void in

                        if error != nil{
                            print(error)
                        } else if let results = results as? [PFObject]! {

                            for result in results {
                                self.profile = result
                            }
                        }
                    }

Answer 1

也许指针的存储方式不同，尝试使用这个

profileQuery.whereKey("user", equalTo: PFObject(outDataWithClassName: "_User", objectId: "\(object.objectId!)"))

您还可以删除此行 profileQuery.includeKey("user")