I'm trying to build a simple CoreData-App that let's you add and
remove entries in an NSTableView (a flightbook with several fields
like flightnum, date, weather, ...). That worked pretty well without
writing a single row of code. I was amazed...
Now I wanted to add an NSOutlineView at the left side, that let's me
show subgroups of the big bunch of flight entries (like in iPhoto,
e.g. all flights of 2005, 2004 or 2003). You should be able to create
folders in the NSOutlineView (e.g. "flights to usa" or something like
that); when a user selects this folder it should work like an album
in iPhoto or a playlist in iTunes so not the whole flight library is
shown.
How can I achieve this - I thought it should be easy using coredata
and bindings, but i have no clue how (I'm really a newbie to this and
have only read the Hillegass book until now...)
