Code not retrieving/displaying date from Parse.com in a UILabel

Question

I am trying to retrieve the updatedAt section of a parse object and displaying it as a label. I have created a date formatter yet when I convert it to a string it just becomes a null value. Here is the code:

- (void)viewDidLoad { 
[super viewDidLoad];

PFQuery *BizarroTime = [PFQuery queryWithClassName:@"Bizarro"];
[BizarroTime getObjectInBackgroundWithId:@"MkoIkCBMdP" block:^(PFObject *Bizarro, NSError *error) {
    NSDate *BizarroDate = Bizarro[@"updatedAt"];
    NSDateFormatter *df = [NSDateFormatter new];
    [df setDateFormat:@"MMMM dd 'at' HH:mm"];
    self.BizarroUpdatedAt.text = [df stringFromDate:BizarroDate];
}];
}

Any help with this would be awesome! Thanks!

Are you getting the proper NSDate back before you attempt to format it as a string? — Lyndsey Scott
– Lyndsey Scott, Commented Aug 4, 2014 at 0:26
I am not sure, all that I know is that the date in parse's data browser is 2014-08-03T18:15:35.648Z under the updatedAt column which has type 'Date' — woakley5
– woakley5, Commented Aug 4, 2014 at 0:28
Not sure if it actually reaching the app, how should I check? — woakley5
– woakley5, Commented Aug 4, 2014 at 0:28

Lyndsey Scott · Accepted Answer · 2014-08-04 00:49:56Z

2

To make danh's message more concise for future answer-seekers, the updatedAt field of a Parse PFObject* object cannot be accessed as if it's a value in the object's dictionary, ex.:

object[@"updatedAt"];

But must instead be accessed using Parse's updatedAt method:

[object updatedAt];

answered Aug 4, 2014 at 0:49

Lyndsey Scott

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Comments

danh · Accepted Answer · 2014-08-04 00:37:56Z

0

You should check that the returned object is non-nil. If there is an object, the way to get it's updated date is via the PFObject method called updatedAt ...

[BizarroTime getObjectInBackgroundWithId:@"MkoIkCBMdP" block:^(PFObject *Bizarro, NSError *error) {
    if (Bizarro) {
        NSDate *BizarroDate = [Bizarro updatedAt];
        // format as you have it
    } else {
        NSLog(@"%@", error);
    }
}];

answered Aug 4, 2014 at 0:37

danh

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1 Comment

woakley5 Over a year ago

That still returns nill

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