Problems migrating from chili 2.0.0 to 3.3.0 (Bug #1194)

Problems we ran into when migrating from 2.0.0 to 3.3.0¶

1. Issue 1 - GravatarHelper
   • While attempting to do the db migration rake we ran into a problem with bundle Rails::Plugin::GravatarHelper
   • This was solved when we found https://www.chiliproject.org/boards/1/topics/2217
   • Removing plugins/gravatar solved this issue
2. Issue 2 - RemoveDoubleInitialWikiContentJournals
   • After running bundle exec rake --trace db:migrate RAILS_ENV=production a second time, we got the following error/output

     # bundle exec rake --trace db:migrate RAILS_ENV=production                                                                              
     ** Invoke db:migrate (first_time)
     ** Invoke environment (first_time)
     ** Execute environment
     ** Execute db:migrate
     ==  RemoveDoubleInitialWikiContentJournals: migrating =========================
     rake aborted!
     An error has occurred, all later migrations canceled:
     
     uninitialized constant RemoveDoubleInitialWikiContentJournals::WikiContentJournal
     /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:131:in `rescue in const_missing'
     /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:120:in `const_missing'
     db/migrate//20110729125454_remove_double_initial_wiki_content_journals.rb:18:in `up'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:282:in `block in migrate'
     /usr/local/lib/ruby/1.9.1/benchmark.rb:280:in `measure'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:282:in `migrate'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:365:in `migrate'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:491:in `block (2 levels) in migrate'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:567:in `call'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:567:in `ddl_transaction'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:490:in `block in migrate'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:477:in `each'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:477:in `migrate'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:401:in `up'
     /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.14/lib/active_record/migration.rb:383:in `migrate'
     /usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.14/lib/tasks/databases.rake:112:in `block (2 levels) in <top (required)>'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:228:in `call'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:228:in `block in execute'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:223:in `each'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:223:in `execute'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:166:in `block in invoke_with_call_chain'
     /usr/local/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:159:in `invoke_with_call_chain'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/task.rb:152:in `invoke'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:143:in `invoke_task'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `block (2 levels) in top_level'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `each'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:101:in `block in top_level'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:110:in `run_with_threads'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:95:in `top_level'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:73:in `block in run'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:70:in `run'
     /usr/local/lib/ruby/gems/1.9.1/gems/rake-10.0.3/bin/rake:33:in `<top (required)>'
     /usr/local/bin/rake:19:in `load'
     /usr/local/bin/rake:19:in `<main>'
     Tasks: TOP => db:migrate
     

   • At this point we were stumped so we asked in the irc chat and received the following advice

     14:58 < meineerde> nicetry: can you try to add this to the top of
                        db/migrate/20110729125454_remove_double_initial_wiki_content_journals.rb
     14:58 < meineerde> require 'wiki_content'
     

   • The solution put forth by meineerde worked, and we were able to successfully run the db migration rake.