Hi,

i spent a little time with the problem i had some time ago, in effect there is a problem with bindings mechanism in MacRuby 0.6 :

- create a new MacRuby Document based project 

- MyDocument.nib
create a new ObjectController binded with File's Owner Content, model key path "dummy"
create a new text field binded with ObjectController selection, model key path "name"

- MyDocument.rb

class MyDocument < NSDocument
attr_accessor :dummy


def init
super


setDummy({"name"=>"dummy"})
puts "in init class of Hash is : #{@dummy.class.ancestors}"

return self
end


def windowNibName
'MyDocument'
end


# Document data representation for saving (return NSData)
def dataOfType(type, error:outError)
puts "in save class of Hash is : #{@dummy.class.ancestors}"


return true
end

# Read document from data (return non-nil on success)
def readFromData(data, ofType:type, error:outError)
return true
end

# Return lowercase 'untitled', to comply with HIG
def displayName
fileURL ? super : super.sub(/^[[:upper:]]/) {|s| s.downcase}
end
end

bindings works, but when i try to save the document...

in init class of Hash is : [Hash, NSMutableDictionary, NSDictionary, Enumerable, NSObject, Kernel]
in save class of Hash is : [#<Class:0x200577420>, Hash, NSMutableDictionary, NSDictionary, Enumerable, NSObject, Kernel]

of course if i try to serialize the object i obtain :

`fileWrapperOfType:error:': can't dump anonymous class #<Class:..........> (TypeError)

if i remove the bindings with text field all works again...well i mean no data in it, but at least the class of object remain the same

au contraire in MacRuby 0.5 all works fine

in init class of Hash is : [NSMutableDictionary, NSDictionary, Enumerable, NSObject, Kernel]
in save class of Hash is : [NSMutableDictionary, NSDictionary, Enumerable, NSObject, Kernel]

Thanks for any help and workaround
Ciao