4Rails, Make has_one with :conditions hash scope build or creation of the associated object with those conditions

Make has_one with :conditions hash scope build or creation of the associated object with those conditions »

m activerecord/lib/active_record/associations.rb
m activerecord/lib/active_record/associations/has_one_association.rb
m activerecord/test/cases/associations/has_one_associations_test.rb
m...