I got the same error when I tried ['task.title'] so I looked a little closer at my controller and realized the problem started when I set table.keycolumn = 'tasks.id'
Changing it to 'task.id' fixed the problem. Now table.columns= ['task.title'] works. Thanks for the quick response. On Feb 13, 3:57 pm, Bruno Rocha <rochacbr...@gmail.com> wrote: > 2011/2/13 tomt <tom_tren...@yahoo.com> > > > table.columns = ['tasks.title'] > > Try with: > > table.columns = ['task.title'] > > where 'task' is the name of the table, 'title' the name of the field.