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Sorting one column table?
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Sorting one column table?


  • Subject: Sorting one column table?
  • From: Bob Ueland <email@hidden>
  • Date: Tue, 2 Oct 2007 14:56:51 -0500 (CDT)

I'm testing sorting a table using datasource. When I did it with a table with two columns all went well. I was using

- (void)tableView:(NSTableView *)aTableView
              sortDescriptorsDidChange:(NSArray *)oldDescriptors
{
    NSArray *newDescriptors = [aTableView sortDescriptors];
    [books sortUsingDescriptors:newDescriptors];
    [aTableView reloadData];
}


However when I tried with a table consisting of one column I got following error message

[<NSCFString 0x2d00c> valueForUndefinedKey:]: this class is not key value coding-compliant for the key title.


When I used two columns I had a mutable array books, consisting of book objects, where a book object consisted of a title and an author. So I had key value coding-compliant getters and setters for them.

However for one column table there is no need to have a special Book class, since each book is identified by its title only. So my mutable array consists of NSStrings where each string is a title of a book. So there is no need to have setters and getters. And that seems to prevent sorting using the tableView:sortDescriptorsDidChange: method.

So my question is, how do I introduce sorting for one column table.

Bob







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