CODEWITHSUNDEEP
ios
Joe24
Joe24

Reputation: 161

Perform Fetched based on ID in IOS

I am trying to code a method that performs a fetch based on the ID(NSInteger value) I have passed in. I can form a fetch of everything, but when I add the predicate, the program crashes. Have I done the predicate wrong. 

-(BOOL)finding:(NSInteger)theID 
{
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"self == %i",theID];
    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc]init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"Course"    inManagedObjectContext:_cdStack.managedObjectContext];

    [fetchRequest setEntity:entity];
    [fetchRequest setHavingPredicate:predicate];
    NSError *error = nil;
    NSArray *fetchedObjects = [_cdStack.managedObjectContext executeFetchRequest:fetchRequest error:&error];
}

Upvotes: 0

Views: 120

Answers (1)

Emily
Emily

Reputation: 76

This question is pretty old, but I just ran into the same error mentioned in the followup discussion. So just in case if someone else ends up with the same issue, the problem is using [fetchRequest setHavingPredicate: predicate]; instead of [fetchRequest setPredicate: predicate];.

Upvotes: 1

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