Filtering epics from Kanban board

Question

I would like to start by saying I have read Rally Kanban - hiding Epic Stories but I\'m still having trouble on implementing my filter based on the filter process from the Estim

Answer 1

Mark's answer caused an obscure crash when cardboard.setItems(filteredItems) was called. However, since the filtering code is actually manipulating the actual references, it turns out that setItems() method is actually not needed. I pulled it out, and it now filters properly.