返回结果时搜索显示控制器崩溃

我有一个带有搜索显示控制器的TableView。它在过去一直工作得很好,但最近已经开始在某些搜索结果上崩溃。在这里,我的代码根据球手的名字、年龄和残疾来搜索他们。数据已正确加载到表中,我可以访问并向下钻取以接收进一步的信息。然而,当我输入一个搜索查询,无论是名字还是年龄,应用程序崩溃,而高尔夫球手的障碍返回罚款。

注: dataSouceArray 是TableView的数据源, dataSourceArrayCopy 是用于在搜索筛选器中添加和删除对象的数据的可变副本。

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope{
    /*
     Update the filtered array based on the search text and scope.
     */

    [self.dataSourceArrayCopy removeAllObjects]; // First clear the filtered array.

    /*
     Search the main list for products whose type matches the scope (if selected) and whose name matches searchText; add items that match to the filtered array.
     */
    for (Golfer *golfer in dataSourceArray){
        if ([scope isEqualToString:@"Name"] || [golfer.golferName isEqualToString:scope]){
            NSComparisonResult result = [golfer.golferName compare:searchText 
                                                           options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) 
                                                             range:NSMakeRange(0, [searchText length])];
            if (result == NSOrderedSame){
                [self.customerListCopy addObject:golfer];
            }
        }
        if ([scope isEqualToString:@"Age"] || [golfer.golferAge isEqualToString:scope]){
            NSComparisonResult result = [golfer.golferAge compare:searchText 
                                                          options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) 
                                                            range:NSMakeRange(0, [searchText length])];
            if (result == NSOrderedSame){
                [self.dataSourceArrayCopy addObject:golfer];
            }
        }
        if ([scope isEqualToString:@"Handicap"] || [golfer.golferHandicap isEqualToString:scope])
        {
            NSComparisonResult result = [golfer.golferHandicap compare:searchText 
                                                               options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) 
                                                                 range:NSMakeRange(0, [searchText length])];
            if (result == NSOrderedSame)
            {
                [self.dataSourceArrayCopy addObject:golfer];
            }
        }
    }
}  
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
    [self filterContentForSearchText:searchString scope:
     [[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];

    // Return YES to cause the search result table view to be reloaded.
    return YES;
}


- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption
{
    [self filterContentForSearchText:[self.searchDisplayController.searchBar text] scope:
     [[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:searchOption]];

    // Return YES to cause the search result table view to be reloaded.
    return YES;
}

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