CODEWITHSUNDEEP
iosfirebase
Michael Platt
Michael Platt

Reputation: 526

FireBase iOS queryOrderedByChild not working

I am getting results from the code below but they are not in the specified order.

Firebase *myRootRef = [[Firebase alloc] initWithUrl:@"https://xxxxxxxxx.firebaseio.com"];
Firebase *updates = [[myRootRef childByAppendingPath:@"data"] childByAppendingPath:@"Offences"];
[updates queryOrderedByChild:@"dateUpdated"];
[updates observeEventType:FEventTypeChildAdded withBlock:^(FDataSnapshot *snapshot) {
    NSLog(@"VALUE: %@", snapshot.value);
 }];

The child Offences is a JSON array like this...

[ {
  "dateUpdated" : 20140915,
  "name" : "Bla bla bla"
}, {
  "dateUpdated" : 20140912,
  "name" : "Bla bla bla"
}, {
  "dateUpdated" : 20140914,
  "name" : "Bla bla bla"
} ]

I suspect it is the fact it is in an array that is causing the problem, any help appreciated.

Upvotes: 0

Views: 1058

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 600120

Calling queryOrderedByChild returns a modified query. So you need to chain the mehthod calls:

[[updates queryOrderedByChild:@"dateUpdated"] observeEventType:FEventTypeChildAdded...]

See the example "Ordering using a child key" here: https://www.firebase.com/docs/ios/guide/retrieving-data.html#section-ordered-data

Upvotes: 3

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