A generic core data function to Get a record based on the criteria

gistfile1.m

/*
 * Get a record based on the criteria
 */
- (id)getRecordFromEntity:(NSString *)entity whereField:(NSString *)fieldName isEqualTo:(id)val
{
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"(%K = %@)", fieldName, val];
    //NSLog(@"(P: %@)", [pred predicateFormat]);
    NSArray *arr = [self queryDBForEntity:entity predicate:pred sortByField:fieldName];
    //NSLog(@"%@", arr);
    if ([arr count] > 0)
        return [arr objectAtIndex:0];
    return nil;
}