robinmessage/composite_primary_keys — pull request #1 by robinmessage (2013-10-23 13:07:27+00:00)
Title: Handle records == :all in HasManyAssociation#delete_records

Updating delete_record in line with AR 4.0.0 code. Without this calling
delete or clear on a has_many assocation can result in an exception.