Migrations broken in 4-0-stable branch

[moonglum]

The most current version of the 4-0-stable branch is broken when migrating. For a full test run see our Travis Build. Switched back to the 4.0.0 release from Ruby Gems for now, it's working again.

rake aborted!
An error has occurred, all later migrations canceled:

undefined method `[]' for nil:NilClass/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/attribute_methods/read.rb:86:in `block in read_attribute'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/attribute_methods/read.rb:84:in `fetch'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/attribute_methods/read.rb:84:in `read_attribute'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/attribute_methods.rb:243:in `block in attributes'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/attribute_methods.rb:242:in `each'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/attribute_methods.rb:242:in `each_with_object'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/attribute_methods.rb:242:in `attributes'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/attribute_methods/dirty.rb:84:in `keys_for_partial_write'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/attribute_methods/dirty.rb:78:in `create_record'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/callbacks.rb:303:in `block in create_record'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activesupport/lib/active_support/callbacks.rb:373:in `_run__2376870849983964261__create__callbacks'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activesupport/lib/active_support/callbacks.rb:80:in `run_callbacks'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/callbacks.rb:303:in `create_record'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/timestamp.rb:57:in `create_record'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/persistence.rb:467:in `create_or_update'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/callbacks.rb:299:in `block in create_or_update'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activesupport/lib/active_support/callbacks.rb:373:in `_run__2376870849983964261__save__callbacks'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activesupport/lib/active_support/callbacks.rb:80:in `run_callbacks'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/callbacks.rb:299:in `create_or_update'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/persistence.rb:128:in `save!'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/validations.rb:57:in `save!'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/attribute_methods/dirty.rb:41:in `save!'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/transactions.rb:275:in `block in save!'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/transactions.rb:326:in `block in with_transaction_returning_status'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:202:in `block in transaction'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:210:in `within_new_transaction'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:202:in `transaction'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/transactions.rb:209:in `transaction'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/transactions.rb:323:in `with_transaction_returning_status'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/transactions.rb:275:in `save!'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/protected_attributes-1.0.3/lib/active_record/mass_assignment_security/validations.rb:17:in `create!'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/migration.rb:990:in `record_version_state_after_migrating'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/migration.rb:960:in `block in execute_migration_in_transaction'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/migration.rb:1007:in `ddl_transaction'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/migration.rb:958:in `execute_migration_in_transaction'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/migration.rb:920:in `block in migrate'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/migration.rb:916:in `each'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/migration.rb:916:in `migrate'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/migration.rb:764:in `up'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/migration.rb:742:in `migrate'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bundler/gems/rails-bea5e32955f6/activerecord/lib/active_record/railties/databases.rake:42:in `block (2 levels) in <top (required)>'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/task.rb:246:in `call'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/task.rb:246:in `block in execute'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/task.rb:241:in `each'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/task.rb:241:in `execute'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/task.rb:184:in `block in invoke_with_call_chain'
/Users/moonglum/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/task.rb:177:in `invoke_with_call_chain'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/task.rb:170:in `invoke'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/application.rb:143:in `invoke_task'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/application.rb:101:in `block (2 levels) in top_level'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/application.rb:101:in `each'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/application.rb:101:in `block in top_level'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/application.rb:110:in `run_with_threads'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/application.rb:95:in `top_level'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/application.rb:73:in `block in run'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/application.rb:160:in `standard_exception_handling'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/lib/rake/application.rb:70:in `run'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/gems/rake-10.0.4/bin/rake:33:in `<top (required)>'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bin/rake:23:in `load'
/Users/moonglum/.rvm/gems/ruby-2.0.0-p247/bin/rake:23:in `<main>'
Tasks: TOP => db:migrate

[moonglum]

Just out of curiosity: What exactly is the difference between the 4-0-stable and the master branch? They are at the same commit. Is everything pushed there as well?

[rafaelfranca]

Master is 4.1, 4-0-stable is 4.0

[moonglum]

Here's the Travis output for the same code, except that it's using 4.0.0 instead of 4-0-stable. It works.
(But it throws some warnings, this is why I switched to 4-0-stable)

[rafaelfranca]

Make sure you are using protected_attributes master too. The released protected_attributes has a bug with current 4-0-stable.

[moonglum]

Thanks 😄