On 26 Dec 2008, at 21:07, Gourav Tiwari wrote:
> > Hi Fred > > Awesome! you are right, class_caching was turned on. I turned it off > and it worked! > But, I would like to pre-load the the models and controllers when the > framework is loaded, so is there any other option to have caching > enabled and I can make it work? There's not a really good solution to this. One way is to have a special environment just for running migrations (that obviously uses the same database as normal) that has cache classes set to false. Fred > > On Dec 26, 2:50 pm, Frederick Cheung <[email protected]> > wrote: >> On 26 Dec 2008, at 18:29, Gourav Tiwari wrote: >> >> >> >> >> >>> I am wondering in my application for past few days, why the rake >>> db:migrate is behaving differently for different environments. Any >>> clue is appreciated >> >>> Application name : project >>> Database name : project_my_own >>> Environment name : my_own >> >>> If I use simply: >>> rake db:migrate >> >>> It works, but say I have a separate environment called "my_own" >>> and if >>> I run: >>> rake db:migrate RAILS_ENV=my_own >> >> That environment has class_caching turned on which means all models/ >> controllers are preloaded when the framework is loaded. If when the >> model is loaded it tries to inspect its table (as the >> acts_as_versioned plugins seems to make it do) and that table doesn't >> exist yet then bad things will happen. >> >> Fred >> >>> It blows up and gives several line of stack trace: >>> C:\project>rake db:migrate RAILS_ENV=my_own --trace >>> (in C:/project) >>> ** Invoke db:migrate (first_time) >>> ** Invoke environment (first_time) >>> ** Execute environment >>> rake aborted! >>> Mysql::Error: Table 'project_my_own.contents' doesn't exist: SHOW >>> FIELDS FROM `contents` >>> C:/project/vendor/rails/activerecord/lib/active_record/ >>> connection_adapters/abstract_adapter.rb:189:in `log' >>> C:/project/vendor/rails/activerecord/lib/active_record/ >>> connection_adapters/mysql_adapter.rb:309:in >>> `execute_without_reconnect' >>> C:/project/vendor/plugins/manage/initializers/ >>> mysql_adapter_extension.rb:7:in `execute' >>> C:/project/vendor/rails/activerecord/lib/active_record/ >>> connection_adapters/mysql_adapter.rb:440:in `columns' >>> C:/project/vendor/rails/activerecord/lib/active_record/base.rb: >>> 1220:in >>> `columns' >>> C:/project/vendor/rails/activerecord/lib/active_record/base.rb: >>> 1239:in >>> `content_columns' >>> C:/project/vendor/plugins/acts_as_versioned/lib/ >>> acts_as_versioned.rb: >>> 409:in `create_versioned_table' >>> C:/project/vendor/plugins/acts_as_versioned/lib/ >>> acts_as_versioned.rb: >>> 261:in `acts_as_versioned' >>> C:/project/app/models/content.rb:16 >>> C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in >>> `gem_original_require' >>> C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in >>> `require' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:148:in `require' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:507:in `new_constants_in' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:148:in `require' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:254:in `require_or_load' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:413:in `load_missing_constant' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:77:in `const_missing' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:89:in `const_missing' >>> C:/project/app/models/comment.rb:14 >>> C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in >>> `gem_original_require' >>> C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in >>> `require' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:148:in `require' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:507:in `new_constants_in' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:148:in `require' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:254:in `require_or_load' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:213:in `depend_on' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:133:in `require_dependency' >>> C:/project/config/../vendor/rails/railties/lib/initializer.rb:364:in >>> `load_application_classes' >>> C:/project/config/../vendor/rails/railties/lib/initializer.rb:363:in >>> `each' >>> C:/project/config/../vendor/rails/railties/lib/initializer.rb:363:in >>> `load_application_classes' >>> C:/project/config/../vendor/rails/railties/lib/initializer.rb:361:in >>> `each' >>> C:/project/config/../vendor/rails/railties/lib/initializer.rb:361:in >>> `load_application_classes' >>> C:/project/config/../vendor/rails/railties/lib/initializer.rb:182:in >>> `process' >>> C:/project/config/../vendor/rails/railties/lib/initializer.rb:112:in >>> `send' >>> C:/project/config/../vendor/rails/railties/lib/initializer.rb:112:in >>> `run' >>> C:/project/config/environment.rb:9 >>> C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in >>> `gem_original_require' >>> C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in >>> `require' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:148:in `require' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:507:in `new_constants_in' >>> C:/project/vendor/rails/activesupport/lib/active_support/ >>> dependencies.rb:148:in `require' >>> C:/project/vendor/rails/railties/lib/tasks/misc.rake:3 >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:617:in `call' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:617:in >>> `execute' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:612:in `each' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:612:in >>> `execute' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:578:in >>> `invoke_with_call_chain' >>> C:/ruby/lib/ruby/1.8/monitor.rb:242:in `synchronize' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:571:in >>> `invoke_with_call_chain' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:588:in >>> `invoke_prerequisites' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:585:in `each' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:585:in >>> `invoke_prerequisites' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:577:in >>> `invoke_with_call_chain' >>> C:/ruby/lib/ruby/1.8/monitor.rb:242:in `synchronize' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:571:in >>> `invoke_with_call_chain' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:564:in >>> `invoke' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2019:in >>> `invoke_task' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in >>> `top_level' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in `each' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in >>> `top_level' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2036:in >>> `standard_exception_handling' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1991:in >>> `top_level' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1970:in `run' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2036:in >>> `standard_exception_handling' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1967:in `run' >>> C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.3/bin/rake:31 >>> C:/ruby/bin/rake:16:in `load' >>> C:/ruby/bin/rake:16 > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
