'The class PFUser must be registered with registerSubclass before using Parse.'

Question

I've looked around and all the other answers do not work for me, I'm trying to query PFUser, but I keep getting an exception of 'The class PFUser must be registered with registerSubclass before using Parse.'

This is where the issue occurs:

override func collectionView(collectionView: JSQMessagesCollectionView!, avatarImageDataForItemAtIndexPath indexPath: NSIndexPath!) -> JSQMessageAvatarImageDataSource! {
    let message = messages[indexPath.item]
    if self.avatars[message.senderId] == nil {
        var imageView = JSQMessagesAvatarImage(placeholder: UIImage(named: "profile"))
        self.avatars[message.senderId] = imageView

        let user = users[message.senderId]!
        print(user)
        var parseAvatar = PFFile()

        PFUser.registerSubclass()
        let imageQuery = PFUser.query()
        imageQuery?.whereKey("objectId", equalTo: user.objectId!)
        imageQuery?.limit = 1

        imageQuery?.findObjectsInBackgroundWithBlock({ (images: [AnyObject]?, error: NSError?) -> Void in
            if imageQuery?.countObjects() == 0 {
                return
            } else {
                for image in images! {
                    if image.objectForKey("profileImage") == nil {
                        return
                    } else {
                        let userPic = image.objectForKey("profileImage") as! PFFile
                        userPic.getDataInBackgroundWithBlock({ (imageData: NSData?, error: NSError?) -> Void in
                            if (error == nil) {
                                let image = UIImage(data: imageData!)
                                imageView.avatarImage = JSQMessagesAvatarImageFactory.circularAvatarImage(UIImage(data: imageData!), withDiameter: 30)
                            }
                        })
                    }

                }
            }
        })

            // Reload entire table now that the avatar is downloaded
            self.collectionView?.reloadData()

        }

    return self.avatars[message.senderId]
}

Any idea what I might be missing here? I did this in another file, and it doesn't have that issue. So I'm a little confused.

EDIT:

Like this?

import Foundation
import Parse

class TradeUser : PFUser {

override class func initialize() {
    self.registerSubclass()
}

var userID : String {
    get {return objectForKey("objectId") as! String}
    set { setObject(newValue, forKey: "objectId") }
}

var emailAddress : String {
    get {return objectForKey("email") as! String}
    set { setObject(newValue, forKey: "email") }
}

var firstName : String {
    get {return objectForKey("firstName") as! String}
    set {setObject(newValue, forKey: "firstName")}
}

var lastName : String {
    get {return objectForKey("lastName") as! String}
    set {setObject(newValue, forKey: "lastName")}
}

var primaryQueue : String {
    get {return objectForKey("primaryQueue") as! String}
    set {setObject(newValue, forKey: "primaryQueue")}
}

var image : PFFile {
    get { return self["profileImage"] as! PFFile }
    set { self["profileImage"] = newValue }
}

}

You shouldn't need to call `PFUser.registerSubclass()` because the PFUser class is automatically taken care of for you. `registerSubclass()` is only necessary when you have subclassed PFObject or PFUser — Russell, Oct 22 '15 at 18:40
With or without PFUser.registerSubclass() I get the same error, so I'm super confused. — trever, Oct 22 '15 at 18:41
Have you tried to subclass `PFUser` in another file or tried to extend it's properties? — Russell, Oct 22 '15 at 18:54

score 0 · Accepted Answer · answered Oct 22 '15 at 19:16

0

It seems like there's an issue with how the subclass is being registered.

Update your PFUser subclass with the following

class TradeUser : PFUser {

    override class func initialize() {
        struct Static {
            static var onceToken : dispatch_once_t = 0;
        }
        dispatch_once(&Static.onceToken) {
            self.registerSubclass()
        }
    }

    ...
}

answered Oct 22 '15 at 19:16

Russell

3,099
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18

``initialize()`` is giving deprecation warning in swift 3. How do we solve that? – nyxee Jul 20 '17 at 06:28
1

Check out other stackoverflow posts that address this concern such as [this one](https://stackoverflow.com/questions/42824541/swift-3-1-deprecates-initialize-how-can-i-achieve-the-same-thing). – Russell Jul 20 '17 at 18:49

'The class PFUser must be registered with registerSubclass before using Parse.'

1 Answers1