在AnyObject上的算术运算失败

Question

I'm doing an app in iOS Swift with Parse. I need to increment 1 every time a product is viewed. Following is my code to do that:

var prodQuery = PFQuery(className: "prodDet")
        let id = prodId[currprod] as String
        prodQuery.whereKey("objectId", equalTo:id)

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

                    var key1: Int = object["key1Total"]! as Int
                    var key1New: Int = key1 + 1

                    object["key1Total"] = key1New

                }
            }
        }

The above code gives error "@lvalue$T5 is not identical to AnyObject...". Is anything wrong the way I'm dealing with AnyObject object here; How do we do arithmatic calculation on Parse AnyObjects?

Could somebody please shed some light?

Answer 1

I sorted it out, seems like I should cast the object as PFObject and use object.setValue. The following is the working code:

    var prodQuery = PFQuery(className: "prodDet")
let id = prodId[currprod] as String
prodQuery.whereKey("objectId", equalTo:id)

prodQuery.findObjectsInBackgroundWithBlock {
    (objects: [AnyObject]!, error: NSError!) -> Void in
        if error == nil {
            for object in objects as [PFObject] {
                var keyVal = object["key1Total"]! as Int
                var keyNew = keyVal + 1

                object.setValue(keyNew, forKey: "key1Total")

                object.saveInBackgroundWithBlock {
                    (success: Bool, error: NSError?) -> Void in
                        if (success) {
                            //
                        } else {
                            //
                    }
                }
            }
        }
    }

    object.saveInBackgroundWithBlock {
        (success: Bool, error: NSError?) -> Void in
            if (success) {
                //
                } else {
                //
            }
        }
    }
}

}