# Undefined method \`^' for "d":String **URL:** \ **Category:** Rails\ **Created:** [September 12, 2009, 6:14pm UTC](https://www.ruby-forum.com/t/undefined-method-for-d-string/175398 "2009-09-12T18:14:15Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![LFLFLF](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/ba9def/32.png) [@LFLFLF](https://www.ruby-forum.com/u/LFLFLF)\ **Post date:** [September 12, 2009, 6:14pm UTC](https://www.ruby-forum.com/t/undefined-method-for-d-string/175398/1 "2009-09-12T18:14:15Z")
Hi guys. I’m a freshman on Rails (and Ruby) so I’m sorry if my question is pretty basic, and possible has a vary basic answer. I tried to Google this problem, but a couple of hour after and no solution found, I decided to ask for help here. I have installed ruby 1.9.1p243, Rails 2.3.4, Gem 1.3.5, SQLite version 3.6.18 (I think this is all that it’s needed). I´m reading and implementing simultaneously Depot sample app presented in the book Agile Web D. with Rails. After creating the Model (just a simple table Products) and generating the controller and views through the generate script with scaffolding enabled, and applying the respective migration to the database (SQLite), when I access the default action on Products controller (index), I get the following error: * * * Showing app/views/layouts/products.html.erb where line #12 raised: undefined method `^’ for “d”:String Extracted source (around line #12): 9: 10: 11: 12: \<%= flash[:notice] %\> 13: 14: \<%= yield %\> 15: RAILS\_ROOT: C:/lfalcao/Work/Dev/Ruby/Rails/Depot Application Trace | Framework Trace | Full Trace ## C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/ lib/active\_support/message\_verifier.rb:46:in `block in secure_compare' C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/ lib/active_support/message_verifier.rb:45:in`each’ C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/ lib/active\_support/message\_verifier.rb:45:in `secure_compare' C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/ lib/active_support/message_verifier.rb:28:in`verify’ C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/actionpack-2.3.4/lib/ action\_controller/session/cookie\_store.rb:156:in `unmarshal' C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/actionpack-2.3.4/lib/ action_controller/session/cookie_store.rb:145:in`load\_session’ C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/actionpack-2.3.4/lib/ action\_controller/session/abstract\_store.rb:62:in `block in load!' C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/actionpack-2.3.4/lib/ action_controller/session/abstract_store.rb:70:in`stale\_session\_check!’ C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/actionpack-2.3.4/lib/ action\_controller/session/abstract\_store.rb:61:in `load!' C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/actionpack-2.3.4/lib/ action_controller/session/abstract_store.rb:28:in`[]’ C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/actionpack-2.3.4/lib/ action\_controller/flash.rb:163:in `flash' C:1:in`flash’ C:/lfalcao/Work/Dev/Ruby/Rails/Depot/app/views/layouts/ products.html.erb:12:in `_run_erb_app47views47layouts47products46html46erb' C:/lfalcao/Work/Dev/Ruby/Rails/Depot/app/controllers/ products_controller.rb:7:in`index’ This is the default view generated. I haven’t touched it yet. What is this problem? Do I need to install something else? Am I doing anything wrong? I’m sorry if this is a basic one, but I tried everything (which is very little) I know. Anybody can help me? Thanks! ---
**Author:** ![LFLFLF](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/ba9def/32.png) [@LFLFLF](https://www.ruby-forum.com/u/LFLFLF)\ **Post date:** [September 12, 2009, 6:20pm UTC](https://www.ruby-forum.com/t/undefined-method-for-d-string/175398/2 "2009-09-12T18:20:06Z")
On Sep 12, 5:00 pm, LF [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > This is the default view generated. I haven’t touched it yet. What is > this problem? Do I need to install something else? Am I doing anything > wrong? > I’m sorry if this is a basic one, but I tried everything (which is > very little) I know. Anybody can help me? It’s a bug in rails: [https://rails.lighthouseapp.com/projects/8994/tickets/3144-undefined-method-for-string-ror-234](https://rails.lighthouseapp.com/projects/8994/tickets/3144-undefined-method-for-string-ror-234) The change in question was a security fix - for the purpose of learning rails you could revert to rails 2.3.3 without ill effect (make sure you have that version of the gem installed and set RAILS\_GEM\_VERSION in environment.rb) Fred ---
**Author:** ![LFLFLF](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/ba9def/32.png) [@LFLFLF](https://www.ruby-forum.com/u/LFLFLF)\ **Post date:** [September 12, 2009, 9:39pm UTC](https://www.ruby-forum.com/t/undefined-method-for-d-string/175398/3 "2009-09-12T21:39:05Z")
Thanks Fred. That solved my problem. I Installed version 2.3.3 and then I had to rebuild the application from scratch, because only changing the variable RAILS\_GEM\_VERSION in environment.rb, still gave me the error pasted bellow, of a missing method, I guess, when I started the WEBrick server. Then I rebuilt the application with for the version 2.3.3 and all works fine. Thanks again * * * =\> Booting WEBrick =\> Rails 2.3.3 application starting on [http://0.0.0.0:3000](http://0.0.0.0:3000) C:/lfalcao/Work/Dev/Ruby/Rails/Depot1/config/initializers/ new\_rails\_defaults.rb:14:in `': undefined method `generate\_best\_match=’ for ActionController::Routing:Module (NoMethodError) from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active\_support/ dependencies.rb:145:in `load' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active_support/ dependencies.rb:145:in `block in load\_with\_new\_constant\_marking’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active\_support/ dependencies.rb:521:in `new_constants_in' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active_support/ dependencies.rb:145:in `load\_with\_new\_constant\_marking’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/initializer.rb:622:in `block in load_application_initializers' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/initializer.rb:621:in` each’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/initializer.rb:621:in `load_application_initializers' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/initializer.rb:176:in` process’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/initializer.rb:113:in `run' from C:/lfalcao/Work/Dev/Ruby/Rails/Depot1/config/ environment.rb:9:in`\’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active\_support/ dependencies.rb:156:in `require' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active_support/ dependencies.rb:156:in `block in require’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active\_support/ dependencies.rb:521:in `new_constants_in' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active_support/ dependencies.rb:156:in `require’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/commands/server.rb:84:i n `' from script/server:3:in `require’ from script/server:3:in `’ * * * On Sep 12, 5:18 pm, Frederick C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![LFLFLF](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/ba9def/32.png) [@LFLFLF](https://www.ruby-forum.com/u/LFLFLF)\ **Post date:** [October 5, 2009, 11:39pm UTC](https://www.ruby-forum.com/t/undefined-method-for-d-string/175398/4 "2009-10-05T23:39:44Z")
I confirm that just replacing RAILS\_GEM\_VERSION outputs the same error. Is there a workaround for this ? ---
**Author:** ![LFLFLF](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/ba9def/32.png) [@LFLFLF](https://www.ruby-forum.com/u/LFLFLF)\ **Post date:** [September 12, 2009, 9:39pm UTC](https://www.ruby-forum.com/t/undefined-method-for-d-string/175398/5 "2009-09-12T21:39:40Z")
Thanks Fred. That solved my problem. I Installed version 2.3.3 and then I had to rebuild the application from scratch, because only changing the variable RAILS\_GEM\_VERSION in environment.rb, still gave me the error pasted bellow, of a missing method, I guess, when I started the WEBrick server. Then I rebuilt the application with for the version 2.3.3 and all works fine. Thanks again * * * =\> Booting WEBrick =\> Rails 2.3.3 application starting on [http://0.0.0.0:3000](http://0.0.0.0:3000) C:/lfalcao/Work/Dev/Ruby/Rails/Depot1/config/initializers/ new\_rails\_defaults.rb:14:in `': undefined method `generate\_best\_match=’ for ActionController::Routing:Module (NoMethodError) from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active\_support/ dependencies.rb:145:in `load' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active_support/ dependencies.rb:145:in `block in load\_with\_new\_constant\_marking’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active\_support/ dependencies.rb:521:in `new_constants_in' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active_support/ dependencies.rb:145:in `load\_with\_new\_constant\_marking’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/initializer.rb:622:in `block in load_application_initializers' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/initializer.rb:621:in` each’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/initializer.rb:621:in `load_application_initializers' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/initializer.rb:176:in` process’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/initializer.rb:113:in `run' from C:/lfalcao/Work/Dev/Ruby/Rails/Depot1/config/ environment.rb:9:in`\’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active\_support/ dependencies.rb:156:in `require' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active_support/ dependencies.rb:156:in `block in require’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active\_support/ dependencies.rb:521:in `new_constants_in' from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ activesupport-2.3.3/lib/active_support/ dependencies.rb:156:in `require’ from C:/Ruby/Ruby1.9.1-p243/lib/ruby/gems/1.9.1/gems/ rails-2.3.3/lib/commands/server.rb:84:i n `' from script/server:3:in `require’ from script/server:3:in `’ * * * On Sep 12, 5:18 pm, Frederick C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![LFLFLF](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/ba9def/32.png) [@LFLFLF](https://www.ruby-forum.com/u/LFLFLF)\ **Post date:** [October 5, 2009, 11:41pm UTC](https://www.ruby-forum.com/t/undefined-method-for-d-string/175398/6 "2009-10-05T23:41:30Z")
On Oct 5, 8:58 pm, benoror [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I confirm that just replacing RAILS\_GEM\_VERSION outputs the same > error. > > Is there a workaround for this ? you could remove the corresponding line from new\_rails\_defaults.rb - sounds like the version 2.3.4 generates by default contains an option that only exists from rails 2.3.4 onwards. Fred