Which version of DataMapper are you using?  I have a bug currently open with
DataMapper that objects fail to be marshaled preventing them from being
cached with memcached:
http://datamapper.lighthouseapp.com/projects/20609/tickets/691-unable-to-marshaldump-dm-objects-097

The bug was with 0.9.7, and it still had the issue in 0.9.8.  I haven't
tried the latest edge code though.  In general though, it is a DataMapper
bug and not a Merb bug.

Ken


On Tue, Dec 23, 2008 at 1:17 AM, Stan <[email protected]> wrote:

>
> So Merb::Cache[:memcached] works fine as long as I don't try to save
> my DataMapper objects.
> It looks like this:
> irb(main):007:0> l = Line.first
> => #<Line id=2 no="4" begin=#<Date: 4909513/2,0,2299161> active=false>
> irb(main):008:0> Merb::Cache[:memcached].write 'line', l
> => nil
>
> Why is that?
>
> >
>

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