Postgresql schema support

Good day,

Reading this
http://weblog.rubyonrails.org/2009/4/24/this-week-in-edge-rails

I understand the structure 'schema.table_name' for postgresql is
supported in Rails 2.3.x

but I'm still having errors like relation "schema.table_name" doesn't
exists

Any idea?

Best regards,
Ilya Dyoshin