RDoc uninitialized constant error rails 2.3.12

Posted on 2011-09-07
Last Modified: 2012-05-12
still troubleshooting:

[21:51:46]kevin[ndthub]$ rake -T
rake aborted!
uninitialized constant RDoc

*** LOCAL GEMS ***

actionmailer (2.3.12, 2.3.11)
actionpack (2.3.12, 2.3.11)
activerecord (2.3.12, 2.3.11)
activeresource (2.3.12, 2.3.11)
activesupport (2.3.12, 2.3.11)
babosa (0.3.5)
builder (3.0.0)
bundler (1.0.18)
hoptoad_notifier (2.4.11)
multi_json (1.0.3)
rack (1.1.2)
rails (2.3.12, 2.3.11)
rake (0.9.2, 0.9.0)
rdoc (3.9.4, 2.5.11, 2.4.3)
rdoc-data (2.5.3)
sqlite3 (1.3.4)

[21:54:01]kevin[ndthub]$ rvm gemset list

gemsets for ruby-1.8.7-p352 (found in /Users/kevin/.rvm/gems/ruby-1.8.7-p352)
=> rails2
Question by:depassion
  • 4
  • 3
LVL 12

Accepted Solution

JESii earned 500 total points
ID: 36498832
this is a known problem with Rails 2.3.12 and rake...

see for the bug report and discussion of various work-arounds.

Author Comment

ID: 36503643
that solution didn't work for me

gem "rails", "2.3.12"
gem "rdoc"
gem "rake", "0.8.7"

require 'rake'
require 'rake/testtask'
require 'tasks/rails'
require 'rdoc/task'

Author Comment

ID: 36505686
21:36:56]kevin[ndthub]$ rake --trace
rake aborted!
uninitialized constant RDoc
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/ext/module.rb:36:in `const_missing'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/task_manager.rb:207:in `in_namespace'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/dsl_definition.rb:95:in `namespace'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@rails2/gems/rails-2.3.12/lib/tasks/rails.rb:4:in `load'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@rails2/gems/rails-2.3.12/lib/tasks/rails.rb:4:in `each'
/Users/kevin/projects/ndthub/Rakefile:8:in `require'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/rake_module.rb:25:in `load'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/rake_module.rb:25:in `load_rakefile'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/application.rb:495:in `raw_load_rakefile'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/application.rb:78:in `load_rakefile'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/application.rb:77:in `load_rakefile'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/application.rb:61:in `run'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@global/gems/rake-0.9.2/lib/rake/application.rb:59:in `run'
/Users/kevin/.rvm/gems/ruby-1.8.7-p352@rails2/bin/rake:19:in `load'
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LVL 12

Expert Comment

ID: 36510212
OK; check out the comments on this post
It mentions some changes to your rakefile.

There's also this suggestion:
     "It [dependency on the rdoc gem] is a shadow dependency that breaks functionality out of the box. Since it isn't required by core rails but only in the Rakefiles, I got away with "gem 'rdoc', :require => nil" in my Gemfile."
in this commit ( which is apparently the one that caused the breakage.

If that doesn't work, you might consider falling back to 2.3.11... or even upgrading to 3.0.x? (I'm still not on Rails 3.1 as it has a major change in asset (javascript, css, ...) handling)

Assisted Solution

depassion earned 0 total points
ID: 36510229
actually the problem was in my Rakefile:

require(File.join(File.dirname(__FILE__), 'config', 'boot'))
require 'rake'
require 'rake/testtask'
require 'tasks/rails'
require 'rdoc/task'

the last two lines needed to be swapped around so :

require(File.join(File.dirname(__FILE__), 'config', 'boot'))
require 'rake'
require 'rake/testtask'
require 'rdoc/task'
require 'tasks/rails'


Author Closing Comment

ID: 36534639
combination of advice on different sites
LVL 12

Expert Comment

ID: 36510553
I also noticed that Rails 2.3.14 was released recently
and I see that it mentions a fix for "RDoc task errors" which might apply in your case.

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