Xcode 6.3.1 Swift 1.2 library wherekey can't be invoked

Question

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Recently note that wherekey on PFQuery does not work. I tried 3 approaches but all failed. I am using parse-library-1.7.2 on Xcode 6.3.

Error for approach1: Cannot invoke 'whereKey' with an argument list of type '(String, AnyObject)'

Error for approach2: 'String?'is not convertible to 'StringLiteralConvertible'

Error for approach3: 'AnyObject?' is not convertible to 'String'

Code is as below. Anyone can help with this please? Thanks in advance.

  // Define the query that will provide the data for the table view
class MyController: PFQueryTableViewController {
override func queryForTable() -> PFQuery {
    var query = PFQuery(className: "Ticket")
    //Approach 1
    query.whereKey(sellerIdKey, equalTo: currentPhoneUser["objectId"]!)

    //Approach 2
    if let sellerId = currentPhoneUser["objectId"] as? String {
        query.whereKey(sellerIdKey, equalTo: sellerId)
        query.orderByDescending("createdAt")
        return query
    } else {
        fatalError("Can't get Object Id of this user")
    }

    //Approach 3
    if let sellerId = currentPhoneUser["objectId"] as! String {
        query.whereKey(sellerIdKey, equalTo: sellerId)
        query.orderByDescending("createdAt")
        return query
    } else {
        fatalError("Can't get Object Id of this user")
    }
}

}

What version of Parse are you using? See this issue with `whereKey` that was version related. http://stackoverflow.com/questions/28444621/parse-pfquery-wherekeynotequalto-is-not-working-for-pfuser-objects — Peter M, May 01 '15 at 19:49
Also http://stackoverflow.com/questions/22265170/parse-ios-wherekey-using-objectid (I'm not marking duplicates as I know very little about the library or swift) — Peter M, May 01 '15 at 19:51

score 1 · Answer 1 · edited May 23 '17 at 11:51

Turns out to be a swift 1.2 issue. How to cast AnyObject? to String in Swift 1.2

Below is my final solution that compiles:

override func queryForTable() -> PFQuery {
    var query = PFQuery(className: "Ticket")
    let objectId = currentPhoneUser?["objectId"] as? String
    if let constObjectId = objectId {
        query.whereKey(sellerIdKey, equalTo: constObjectId)
    } else {
        fatalError("Cannot find Object Id of current user")
    }
    return query
}

Xcode 6.3.1 Swift 1.2 library wherekey can't be invoked

1 Answers1