[Rubygem on shared host] undefined method map for nil:NilClass

David Lauzon
Tue, 22 Mar 2011 05:44:37 -0000

I can''t start my Rails even using a simple ./script/about (see error
output below).

My app is using Rails 2.1.0 on a shared host where rubygems (1.6.1) and
all application''s gems are installed in user directory.

It looks like if gem is looking at the wrong place to find its gems.

Config :
[code]
[silversurfer:/home/aidscompetence/communitylifecompetence.org/current]$
ls /usr/bin/gem ~/bin/gem
/home/aidscompetence/bin/gem  /usr/bin/gem
[silversurfer:/home/aidscompetence/communitylifecompetence.org/current]$
which gem
/home/aidscompetence/bin/gem
[silversurfer:/home/aidscompetence/communitylifecompetence.org/current]$
gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 1.6.1
  - RUBY VERSION: 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux]
  - INSTALLATION DIRECTORY: /home/aidscompetence/.gems
  - RUBYGEMS PREFIX: /home/aidscompetence
  - RUBY EXECUTABLE: /usr/bin/ruby1.8
  - EXECUTABLE DIRECTORY: /home/aidscompetence/.gems/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-linux
  - GEM PATHS:
     - /home/aidscompetence/.gems
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gempath" => ["/home/aidscompetence/.gems"]
     - "gem" => "--no-ri --no-rdoc"
     - :sources => ["http://gems.github.com",
"http://gems.rubyforge.org"]
     - "gemhome" => "/home/aidscompetence/.gems"
  - REMOTE SOURCES:
     - http://gems.github.com
     - http://gems.rubyforge.org
[/code]


Error Output:

[code]
[silversurfer:/home/aidscompetence/communitylifecompetence.org/current]$
./script/about
./script/../config/../vendor/rails/railties/lib/initializer.rb:225:in
`require_frameworks'': no such file to load --
active_support/cache/file_store (RuntimeError)
    from
./script/../config/../vendor/rails/railties/lib/initializer.rb:113:in
`process''
    from
./script/../config/../vendor/rails/railties/lib/initializer.rb:93:in
`send''
    from
./script/../config/../vendor/rails/railties/lib/initializer.rb:93:in
`run''
    from
/home/aidscompetence/communitylifecompetence.org/releases/20100314224301/config/environment.rb:13
    from /home/aidscompetence/lib/rubygems/custom_require.rb:36:in
`gem_original_require''
    from /home/aidscompetence/lib/rubygems/custom_require.rb:36:in
`require''
    from
/home/aidscompetence/communitylifecompetence.org/releases/20100314224301/vendor/rails/railties/lib/commands/about.rb:1
    from /home/aidscompetence/lib/rubygems/custom_require.rb:36:in
`gem_original_require''
    from /home/aidscompetence/lib/rubygems/custom_require.rb:36:in
`require''
    from ./script/about:3
[/code]


By the way, the file file_store.rb does exists :

[code]
[silversurfer:/home/aidscompetence/communitylifecompetence.org/current]$
ls
~/.gems/gems/activesupport-2.1.0/lib/active_support/cache/file_store.rb
/home/aidscompetence/.gems/gems/activesupport-2.1.0/lib/active_support/cache/file_store.rb
[/code]

-David

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