在解析中将字符串附加到数组中

I just learned how to store an array into a Parse Cloud using the example provided by the Parse Documentation:

我刚刚学习了如何使用解析文档提供的示例将数组存储到解析云中:

gameScore.addUniqueObjectsFromArray(["flying", "kungfu"], forKey:"skills")
gameScore.saveInBackground()

Now, utilizing this logic, I want to append strings into the array. So this is what I wrote:

现在，利用这个逻辑，我想把字符串添加到数组中。这就是我写的

@IBAction func requestButtonPressed(sender: AnyObject) {
    var prayerRequests = PFObject(className: "PrayerRequests")
    prayerRequests.addObject(["YOIDJFO"], forKey:"skills")
    prayerRequests.saveInBackground()
}

Now, after having executed the function requestButtonPressed three times, in parse this is happening:

现在，在执行了三次requestButtonPressed函数后，在解析中发生:

However. I don't want that to happen when I execute the function requestButtonPressed three times. I want it to be something like this:

然而。我不希望在执行requestButtonPressed三次时发生这种情况。我希望它是这样的:

Anybody have a solution to this problem?

有人能解决这个问题吗?

2 个解决方案

#1

Every time you use this statement var prayerRequests = PFObject(className: "PrayerRequests") a new PFObject will be created. In order to update a object you need to query the object first and then update its field. In your case you should first get the array by querying for the object, modify / append data to the array and then update the object.

每次使用此语句var prayerRequests = PFObject(className:“prayerRequests”)时，都会创建一个新的PFObject。为了更新对象，您需要首先查询对象，然后更新其字段。在这种情况下，您应该首先通过查询对象来获取数组，然后修改/添加数据到数组中，然后更新对象。

#2

Instead of doing addObject, do insertObject:{yourObject} atIndexPath:{storingPosition} forKey:{@"youKey"}.

而不是做addObject:{yourObject} atIndexPath:{storingPosition} forKey:{@"youKey"}。

And the the value you are adding is an array ["YOIDJFO"] , object should be like {"YOIDJFO"}

你添加的值是一个数组["YOIDJFO"]对象应该是{"YOIDJFO"}

#1

#2