Access pointer value in Parse.com object with swift

Question

I'm trying to access the "objectId" field in "User" table, while running a query on a "Photos" table.

Here is the Parse.com query (simplified) run on "Photos" table:

func checkDbForNewPhotos() {
var query = PFQuery(className:"Photos")
query.whereKey("fbId", equalTo:"34343434343434")
query.includeKey("user.objectId"); // Is this what is needed to access user info ?

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


        for object in objects {
            println(object) // See sample object below
            println(user.objectId) // Error here: user type doesn't have member objectId
}

println(object): Here is a sample object returned from the query. I'm trying to access 9wEGRWSnTk from the "user" field which is a pointer to another table.

<Photos: 0x7c091fd0, objectId: 6D0aHreHsC, localId: (null)> {
alerts = 0;
country1 = france;
country2 = "";
imageFile = "<PFFile: 0x7b7d9130>";
user = "<PFUser: 0x7b7d95f0, objectId: 9wEGRWSnTk>";
}

How should I format that in swift to access 9wEGRWSnTk ?

'String?' does not have a member named 'objectId' no matter how I force unwrap with ! — Robert Brax
– Robert Brax, Commented Dec 17, 2014 at 13:56

Tal Zion · Accepted Answer · 2015-04-03 18:16:15Z

3

I had the same problem. You need to cast it to a PFUser and then access the information.

let pfObject:PFObject = object as PFObject
let userObject:PFUser = pfObject["user"] as PFUser
print("User \(userObject.objectId)")

answered Apr 3, 2015 at 18:16

Tal Zion

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Comments

Dániel Nagy · Accepted Answer · 2014-12-17 15:21:42Z

1

You should use

println(object["user"].objectId)

if the column where you store your user named as "user".

edited Dec 17, 2014 at 15:21

answered Dec 17, 2014 at 14:25

Dániel Nagy

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Comments

KennyVB · Accepted Answer · 2014-12-17 17:28:47Z

1

You could also just say EqualTo and use the PFUser.currentuser() that way you load everything from that user only else try to explain why you need the objectId when querying

query.whereKey("user", equalTo: PFUser.currentUser())

answered Dec 17, 2014 at 17:28

KennyVB

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