# Undefined local variable or method \`class\_name' error when m **URL:** \ **Category:** Radiant CMS\ **Created:** [April 25, 2007, 1:35pm UTC](https://www.ruby-forum.com/t/undefined-local-variable-or-method-class-name-error-when-m/92892 "2007-04-25T13:35:42Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Sharon\_C](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9de0a6/32.png) [@Sharon\_C](https://www.ruby-forum.com/u/Sharon_C)\ **Post date:** [April 25, 2007, 1:35pm UTC](https://www.ruby-forum.com/t/undefined-local-variable-or-method-class-name-error-when-m/92892/1 "2007-04-25T13:35:42Z")
I am trying to migrage our SQL database from 0.5.2 to 0.6. When I run rake production db:migrate I receive the following error # C:\RailsApps\Radiant6\>rake production db:migrate (in C:/RailsApps/Radiant6) Extensions cannot be used until Radiant migrations are up to date. == MergeBehaviorsAndPages: migrating # == MergeBehaviorsAndPages: converting behavior names to class names rake aborted! undefined local variable or method `class\_name’ for #Page:0x46902cc I have no idea where to go from here and would be greatful for any help. The full trace is as below. # C:\RailsApps\Radiant6\>rake production db:migrate --trace (in C:/RailsApps/Radiant6) \*\* Invoke production (first\_time) \*\* Execute production \*\* Invoke environment (first\_time) \*\* Execute environment Extensions cannot be used until Radiant migrations are up to date. \*\* Invoke db:migrate (first\_time) \*\* Invoke environment \*\* Execute db:migrate \*\* Invoke db:schema:dump (first\_time) \*\* Invoke environment \*\* Execute db:schema:dump == MergeBehaviorsAndPages: migrating # == MergeBehaviorsAndPages: converting behavior names to class names rake aborted! undefined local variable or method `class_name' for # c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/base.rb:1860:in`method\_missing’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/app/models/page.rb:199:in `valid_cl ass_name' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/validations.rb:818:in`send’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e\_record/validations.rb:818:in `run_validations' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/validations.rb:816:in`each’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e\_record/validations.rb:816:in `run_validations' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/validations.rb:780:in`valid\_without\_callbacks?’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e\_record/callbacks.rb:299:in `valid?' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/validations.rb:761:in`save\_without\_transactions!’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e\_record/transactions.rb:133:in `save!' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/connection_adapters/abstract/database_statements.rb:59:in`transaction’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e\_record/transactions.rb:95:in `transaction' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/transactions.rb:121:in`transaction’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e\_record/transactions.rb:133:in `save!' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/db/migrate//010_merge_behav iors_and _pages.rb:17:in`real\_up’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/db/migrate//010\_merge\_behav iors\_and \_pages.rb:14:in `each' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/db/migrate//010_merge_behav iors_and _pages.rb:14:in`real\_up’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e\_record/migration.rb:212:in `send' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/migration.rb:212:in`migrate’ c:/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/migration.rb:212:in`migrate’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e\_record/migration.rb:335:in `migrate' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/migration.rb:330:in`each’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e\_record/migration.rb:330:in `migrate' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e_record/migration.rb:297:in`up’ c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/activerecord/l ib/activ e\_record/migration.rb:288:in `migrate' c:/ruby/lib/ruby/gems/1.8/gems/radiant-0.6.0/vendor/rails/railties/lib/t asks/dat abases.rake:7 c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:399:in`call’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:399:in `execute' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:399:in`each’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:399:in `execute' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:369:in`invoke’ c:/ruby/lib/ruby/1.8/thread.rb:135:in `synchronize' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:362:in`invoke’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:1935:in `run' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:1935:in`each’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:1935:in `run' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/bin/rake:7 c:/ruby/bin/rake.bat:20:in`load’ c:/ruby/bin/rake.bat:20 C:\RailsApps\Radiant6\> Many thanks Sharon C. 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**Author:** ![Sharon\_C](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9de0a6/32.png) [@Sharon\_C](https://www.ruby-forum.com/u/Sharon_C)\ **Post date:** [April 25, 2007, 3:02pm UTC](https://www.ruby-forum.com/t/undefined-local-variable-or-method-class-name-error-when-m/92892/2 "2007-04-25T15:02:56Z")
Sharon, I just committed a change that fixes this issue. Try running rake radiant:freeze:edge in the directory of your radiant instance, then try to migrate again. radiant:freeze:edge will only work if you have the command-line Subversion installed. Sean