Ruby on rails 如何将bundler（0.9.1.pre1）与Rails和CouchRest一起使用

我想使用当前版本的（从0.8到0.9已经有相当多的变化）来管理我的Rails应用程序的精华。首先，我在app文件夹的根目录中创建了一个

Gemfile

，并将所有需要的gem添加到其中。然后我（按照手册中的建议）将以下代码放入我的

config/environment.rb

：

begin
  # Require the preresolved locked set of gems.
  require File.expand_path('../.bundle/environment', __FILE__)
rescue LoadError
  # Fallback on doing the resolve at runtime.
  require "rubygems"
  require "bundler"
  Bundler.setup
end

bundle安装

似乎工作正常，因为您的bundle已经完成了

。但启动我的应用程序时，出现以下错误：

$ ruby script/server  
=> Booting WEBrick
=> Rails 2.3.5 application starting on http://0.0.0.0:3000
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:443:in `load_missing_constant': uninitialized constant CouchRest (NameError)
        from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:80:in `const_missing'
        from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:92:in `const_missing'
        from /home/kuf/data/Arbeit/Decodon/2009-05-08-Project_Orange/orangemix/fuse/config/initializers/couchdb.rb:35
        from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:in `load_without_new_constant_marking'
        from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:in `load'
        from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in'
        from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:in `load'
        from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:622:in `load_application_initializers'
         ... 11 levels...
        from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/commands/server.rb:84
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
        from script/server:3

这里出了什么问题？
arrg，刚刚按下发送按钮，有了解决问题的想法。bundler手册说：“[…]在代码的开头包括以下内容。”对于Rails应用程序，您必须将提到的部分放在
config/environment.rb
的底部，以便在安装之前正确设置所有内容：

RAILS_GEM_VERSION = '2.3.5' unless defined? RAILS_GEM_VERSION

require File.join(File.dirname(__FILE__), 'boot')

Rails::Initializer.run do |config|
...
end

# Put the bundler related stuff here!
begin
  # Require the preresolved locked set of gems.
  require File.expand_path('../.bundle/environment', __FILE__)
rescue LoadError
  # Fallback on doing the resolve at runtime.
  require "rubygems"
  require "bundler"
  Bundler.setup
end

你的
文件中有什么？谢谢你的提示，达米恩。没错，我也应该提供这些信息。幸运的是我发现了错误。谢谢你发布这个。上周我试图让它工作，但完全失败了。不过，我把bundler初始化代码放在Rails初始化器之前。最后我切换回bundler 0.8.1，Rails 2.3.5（现在）对它有更好的文档记录。很高兴这对您也有帮助。目前，大多数文档都是针对0.9之前的版本的，并且有很多变化。希望这种情况很快会改变。您现在应该接受您的答案，这样就不会出现在未答复的列表中：）感谢您的提示，但是stackoverflow会在2天内阻止您接受自己的答案。现在有可能了。