rails/activerecord-session_store — pull request #3 by rust (2012-11-30 01:32:05+00:00)
Title: Remove attr_accessible from ActiveRecord::SessionStore::Session

In Rails 4.0, attr_accessible is extracted into protected_attributes gem package. Additionally, mass_assignment_options is removed from ActiveRecord rails/rails@2d7ae1b0 , so attr_accessible option should be removed.