Question

我想将值保存到表中，然后从另一个表中删除一行。但是它保存到表但不从其他表中删除。控制台说对象为null但是当我打印文本值并从parse.com检查表时我确信在Wish表中有一个与文本相同的objectId。这是我使用的代码。

        @IBAction func TakeWish(sender: AnyObject) {
        var takenWish = PFObject(className: "TakenWish")
        takenWish["title"] = self.wishTitle.text
        takenWish["description"] = self.wishDesc.text
        takenWish["url"] = self.wishUrl.text
        takenWish["userName"] = PFUser.currentUser()!.username
        takenWish["takenUserName"] = self.username.text
        let imageData = UIImagePNGRepresentation(wishImage.image!)
        let imageFile = PFFile(name: "image.png",data: imageData!)
        takenWish["imageFile"] = imageFile



        takenWish.saveInBackgroundWithBlock {
            (success: Bool, error: NSError?) -> Void in
            if (success) {

                // The object has been saved.
            } else {
                // There was a problem, check error.description
            }
        }
        var deleteQuery = PFQuery(className: "Wish")
        deleteQuery.whereKey("objectId", equalTo: text! )
        deleteQuery.findObjectsInBackgroundWithBlock {(objects , error) -> Void in

            if error == nil {
                if let objects = objects {
                    for object in objects {
                        object.deleteInBackground()

                    }
                }
            }
        }
        displayAlert("Taken", message: "Wish Has Been Taken !")

        self.performSegueWithIdentifier("toPro", sender: nil)
    }

但是当我在另一个按钮中单独使用此代码时，它可以正常工作。

    var deleteQuery = PFQuery(className: "Wish")
    deleteQuery.whereKey("objectId", equalTo: text! )
    deleteQuery.findObjectsInBackgroundWithBlock {(objects , error) -> Void in

        if error == nil {
            if let objects = objects {
                for object in objects {
                    object.deleteInBackground()

                }
            }
        }
    }

这段代码有什么问题我可以修复它？

对象存在但它返回Null

0 个答案: