Parse returning empty array in Swift when array has data

Question

I am trying to get an array from a Parse.com database in my Swift app. For some reason, the array returned is always nil. I checked the permissions to make sure that the data can be accessed by my app, I find it really hard to find a starting point for this bug.

Here's my code:

    let username = PFUser.currentUser()?.objectId
    print("username: \(username)")
    let bannedUsers = PFUser.currentUser()!["bannedUsers"] as? NSArray
    print("bannedUsers: \(bannedUsers)")

The log output:

    username: Optional("Nmmtb07PoR")
    bannedUsers: nil

A screenshot from the database to show the array is not nil:

The exact value of the array:

[{"__type":"Pointer","className":"_User","objectId":"mG33sM3fcC"}]

I tried playing around with the contents of the array, but no matter what I put in it, whether it's a pointer or just a string, I always get 'nil'. I hope you can help.

user2634633 · Accepted Answer · 2015-11-08 18:34:45Z

2

Solved:

I added the line

PFUser.currentUser()?.fetch()

This refreshed the user and I got the proper data instead of 'nil'. Hope it helps if you have a similar issue in the future.

answered Nov 8, 2015 at 18:34

user2634633

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Comments

TekMi · Accepted Answer · 2015-11-08 16:49:51Z

0

How about:

let bannedUsers = PFUser.currentUser()!.bannedUsers as? NSArray

answered Nov 8, 2015 at 16:49

TekMi

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1 Comment

user2634633 Over a year ago

I get "Value of type 'PFUser' has no member 'bannedUsers'" compiler error

user4478383 · Accepted Answer · 2015-11-08 18:24:49Z

0

Try using: PFUser.currentUser()!.objectForKey("bannedUsers")

or PFUser.currentUser()!.valueForKey("bannedUsers")

Your column could be not included in the currentUser object so you would have to query users and include the bannedUsers column. You can do it by the following:

let query = PFUser.query()
query?.includeKey("bannedUsers")
do {
 let user = try query?.getObjectWithId((PFUser.currentUser()?.objectId)!)
 let bannedUsers = user?.valueForKey("bannedUsers")
 print(bannedUsers)
} catch {
  print(error)
}

edited Nov 8, 2015 at 18:24

answered Nov 8, 2015 at 17:45

user4478383

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5 Comments

user2634633 Over a year ago

It returns 'nil' in both cases

user4478383 Over a year ago

Ok, this means the pointer is not included in your current user, could you try this PFUser.currentUser()!.valueForKey("bannedUsers").fetch()

user2634633 Over a year ago

fatal error: unexpectedly found nil while unwrapping an Optional value

user2634633 Over a year ago

I added some extra columns - a new array column and a string column, in both cases I also get a 'nil'. It seems to me that for some reason I can't access user values at all

user2634633 Over a year ago

I've solved the problem - your idea with fetch() was right, it's just that I had to do fetch() on the user, not the value. The changed answer might be good, but it won't do in my case - I am using the data as a part of another query but don't want to join two queries. Still, thanks for help, I wouldn't have done it without the fetch() idea.

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