no such file to load active_record/associations/has_and_belongs_to_many_association

问题

I added the composite_primary_keys gem in my Gemfile. On local environment it runs fine, but on a centos machine it breaks with the following error. Ruby version is 1.9.2p290 and rubygems version is 1.3.7 on both environments. Does anyone know why that could be?

bundle exec rake db:create --trace

no such file to load -- active_record/associations/has_and_belongs_to_many_association
/var/tmp/jenkins/gem_cache/myapp/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
/var/tmp/jenkins/gem_cache/myapp/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `block in require'
/var/tmp/jenkins/gem_cache/myapp/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `block in load_dependency'
/var/tmp/jenkins/gem_cache/myapp/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:640:in `new_constants_in'
/var/tmp/jenkins/gem_cache/myapp/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
/var/tmp/jenkins/gem_cache/myapp/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
/var/tmp/jenkins/gem_cache/myapp/gems/composite_primary_keys-4.1.2/lib/composite_primary_keys.rb:40:in `<top (required)>'
/opt/ruby/1.9.2/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:68:in `require'
/opt/ruby/1.9.2/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
/opt/ruby/1.9.2/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:66:in `each'
/opt/ruby/1.9.2/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:66:in `block in require'
/opt/ruby/1.9.2/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:55:in `each'
/opt/ruby/1.9.2/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:55:in `require'
/opt/ruby/1.9.2/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler.rb:122:in `require'

回答1:

The same error can occur when trying to use the composite_primary_keys gem with Active Record 4.1.0:

.../vendor/cache/ruby/1.9.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:247:in `require': cannot load such file -- active_record/associations/has_and_belongs_to_many_association (LoadError)
  from .../vendor/cache/ruby/1.9.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:247:in `block in require'
  from .../vendor/cache/ruby/1.9.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:232:in `load_dependency'
  ...

This is because the current release of composite_primary_keys (version 6.0.1 as of 17 April 2014) doesn't include support for Active Record 4.1.0, which apparently removed the file in question.

The problem is fixed in the ar_4.1.x branch of the gem's source code, however. If your project uses Bundler, a solution is to edit its Gemfile and replace the line

gem 'composite_primary_keys'

with

gem 'composite_primary_keys', {
  :git => 'git://github.com/composite-primary-keys/composite_primary_keys.git',
  :branch => 'ar_4.1.x'
}

then run bundle install from your project's root folder.

回答2:

Cleaning the shared gems list on the jenkins machine fixed the issue.

回答3:

Update your Gemfile: gem 'composite_primary_keys', '~> 7.0'

来源：https://stackoverflow.com/questions/11023167/no-such-file-to-load-active-record-associations-has-and-belongs-to-many-associat

标签

ruby

ruby-on-rails-3