CODEWITHSUNDEEP
iosswiftparse-platform
PhilHarmonie
PhilHarmonie

Reputation: 435

Swift Sorting parse results by createdAt

I query messages stored on parse.com

let query = PFQuery(className: "Messages")
    query.whereKey("sender", equalTo: self.sender)
    query.whereKey("receiver", equalTo: self.receiver)
    query.orderByAscending("createdAt")
    query.findObjectsInBackgroundWithBlock {
        (objects: [AnyObject]?, error: NSError?) -> Void in

        if error == nil {
            var messages = [Int: [AnyObject]]()

            if let objects = objects as? [PFObject] {
                var i: Int = 0
                for object in objects {

                    var temp = [AnyObject]()

                    temp.append(object["sender"]!)
                    temp.append(object["receiver"]!)
                    temp.append(object.createdAt!)
                    temp.append(object["message"]!)

                    messages[i] = temp

                    i = i+1
                }
                print("Messages: \(messages)")
            }
        } else {
            print("Error!")
        }
    }

The result looks like

Messages: [2: [Phil, Eff, 2015-08-27 15:05:04 +0000, three], 0: [Phil, Eff, 2015-08-27 15:04:57 +0000, one], 1: [Phil, Eff, 2015-08-27 15:05:00 +0000, two]]

It seems like query.orderByAscending("createdAt") is doing nothing?

Upvotes: 0

Views: 533

Answers (1)

soulshined
soulshined

Reputation: 10612

createdAt is doing what it's intended to do. It's how your adding the data to you object.

You need to forego the int var and simply use :

messages = temp

, because you are running a loop for every object in objects. Each message can only equal it's counterpart, no reason to specify an index for it

To add your message to an array simply do the following:

var messagesArray:NSMutableArray = []

..findObjectsInBackgroundWithBlock {
(objects: [AnyObject]?, error: NSError?) -> Void in
    if error == nil {

      if let object = objects as ? [PFObject] {
           for object in objects {
           ...
           messages = temp
           self.messagesArray.addObject(messages)
           ...

Upvotes: 1

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