爲什麼我得到這個錯誤：unknown屬性：data_changes

Question

我得到這個錯誤，我不知道如何調試它。它發生在我爲我的控制器創建行動似乎在「保存」方法：

我認爲我開始問題，當我部署vestal_versions：

/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:2906:in `assign_attributes' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:2902:in `each' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:2902:in `assign_attributes' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:2775:in `attributes=' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:2473:in `initialize' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/reflection.rb:162:in `new' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/reflection.rb:162:in `build_association' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/associations/association_collection.rb:425:in `create_record' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:2178:in `with_scope' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/associations/association_collection.rb:424:in `send' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/associations/association_collection.rb:424:in `create_record' 
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/associations/association_collection.rb:245:in `create' 
/home/timothy/.bundler/ruby/1.8/vestal_versions-2773ee610767/lib/vestal_versions/creation.rb:43:in `create_version' 

Answer 1

你通過做任何需要的rake任務Vestal版本？你耙db：遷移？