CODEWITHSUNDEEP
iosiphoneobjective-cparse-platform
daspianist
daspianist

Reputation: 5495

How to use customize Parse query to find whereKey: doesNotContainString:?

Presently, I have a Game class table with an attribute named currentTurnPlayer. For a query, I am interested in getting all the game objects where currentTurnPlayer's name does not equal to my self.currentUser.username

In other words, I am stuck on trying to do the opposite of what default Parse' query method whereKey:containsString: does, and to only retrieve objects where the key does not contain the string self.currentUser.username. How would I be able to accomplish this? Thanks!

Upvotes: 0

Views: 914

Answers (2)

greymouser
greymouser

Reputation: 3181

I would suggest using PFQuery with your own predicate.

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"currentTurnPlayer != %@",
                          self.currentUser.username];
PFQuery *query = [PFQuery queryWithClassName:[Game parseClassName]
                                   predicate:predicate];

... and then execute the query as usual.

Parse doesn't support all predicate statements, but it supports the basic ones, including == and !=.

Upvotes: 2

Brandon Schlenker
Brandon Schlenker

Reputation: 5088

Using whereKey:notEqualTo: should do the trick. However if you're not matching exact name to exact name (i.e. allowing the user to enter a search term), that obviously won't work.

In that case you'll want to use whereKey:matchesRegex: I'm not a regex pro but here's an example.

[query whereKey:@"currentTurnPlayer" matchesRegex:[NSString stringWithFormat:@"(?i:^.*%@.*$)", playerName]];

Upvotes: 2

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