Bundler 未加载 gem

我在使用 Bundler 和能够访问我的宝石而不需要在某个地方需要它们时遇到了问题，因为config.gem曾经为我这样做过（据我所知）。在我的 Rails 3 应用程序中，我定义了我的Gemfile像这样：

clear_sources
source "http://gemcutter.org"
source "http://gems.github.com"
bundle_path "vendor/bundler_gems"

## Bundle edge rails:
git "git://github.com/rails/arel.git"
git "git://github.com/rails/rack.git"
gem "rails", :git => "git://github.com/rails/rails.git"

## Bundle
gem "mongo_mapper", :git => "git://github.com/jnunemaker/mongomapper.git"
gem "bluecloth", ">= 2.0.0"

然后我跑gem bundle，它按照预期将所有内容捆绑在一起。在 - 的里面environment.rb包含在其中的文件boot.rb它看起来像这样：

# DO NOT MODIFY THIS FILE
module Bundler
 file = File.expand_path(__FILE__)
 dir = File.dirname(file)

  ENV["PATH"]     = "#{dir}/../../../../bin:#{ENV["PATH"]}"
  ENV["RUBYOPT"]  = "-r#{file} #{ENV["RUBYOPT"]}"

  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/builder-2.1.2/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/builder-2.1.2/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/text-hyphen-1.0.0/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/text-hyphen-1.0.0/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/i18n-0.3.3/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/i18n-0.3.3/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/arel/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/arel/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activemodel/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activemodel/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/jnunemaker-validatable-1.8.1/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/jnunemaker-validatable-1.8.1/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/abstract-1.0.0/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/abstract-1.0.0/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/erubis-2.6.5/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/erubis-2.6.5/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mime-types-1.16/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mime-types-1.16/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mail-2.1.2/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mail-2.1.2/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rake-0.8.7/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rake-0.8.7/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/railties/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/railties/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/memcache-client-1.7.7/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/memcache-client-1.7.7/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rack/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rack/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rack-test-0.5.3/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rack-test-0.5.3/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rack-mount-0.4.5/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rack-mount-0.4.5/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/actionpack/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/actionpack/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/bluecloth-2.0.7/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/bluecloth-2.0.7/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/bluecloth-2.0.7/ext")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activerecord/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activerecord/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/text-format-1.0.0/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/text-format-1.0.0/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/actionmailer/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/actionmailer/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/tzinfo-0.3.16/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/tzinfo-0.3.16/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activesupport/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activesupport/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activeresource/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activeresource/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mongo-0.18.2/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mongo-0.18.2/lib")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/mongomapper/bin")
  $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/mongomapper/lib")

  @gemfile = "#{dir}/../../../../Gemfile"

  require "rubygems" unless respond_to?(:gem) # 1.9 already has RubyGems loaded

  @bundled_specs = {}
  @bundled_specs["builder"] = eval(File.read("#{dir}/specifications/builder-2.1.2.gemspec"))
  @bundled_specs["builder"].loaded_from = "#{dir}/specifications/builder-2.1.2.gemspec"
  @bundled_specs["text-hyphen"] = eval(File.read("#{dir}/specifications/text-hyphen-1.0.0.gemspec"))
  @bundled_specs["text-hyphen"].loaded_from = "#{dir}/specifications/text-hyphen-1.0.0.gemspec"
  @bundled_specs["i18n"] = eval(File.read("#{dir}/specifications/i18n-0.3.3.gemspec"))
  @bundled_specs["i18n"].loaded_from = "#{dir}/specifications/i18n-0.3.3.gemspec"
  @bundled_specs["arel"] = eval(File.read("#{dir}/specifications/arel-0.2.pre.gemspec"))
  @bundled_specs["arel"].loaded_from = "#{dir}/specifications/arel-0.2.pre.gemspec"
  @bundled_specs["activemodel"] = eval(File.read("#{dir}/specifications/activemodel-3.0.pre.gemspec"))
  @bundled_specs["activemodel"].loaded_from = "#{dir}/specifications/activemodel-3.0.pre.gemspec"
  @bundled_specs["jnunemaker-validatable"] = eval(File.read("#{dir}/specifications/jnunemaker-validatable-1.8.1.gemspec"))
  @bundled_specs["jnunemaker-validatable"].loaded_from = "#{dir}/specifications/jnunemaker-validatable-1.8.1.gemspec"
  @bundled_specs["abstract"] = eval(File.read("#{dir}/specifications/abstract-1.0.0.gemspec"))
  @bundled_specs["abstract"].loaded_from = "#{dir}/specifications/abstract-1.0.0.gemspec"
  @bundled_specs["erubis"] = eval(File.read("#{dir}/specifications/erubis-2.6.5.gemspec"))
  @bundled_specs["erubis"].loaded_from = "#{dir}/specifications/erubis-2.6.5.gemspec"
  @bundled_specs["mime-types"] = eval(File.read("#{dir}/specifications/mime-types-1.16.gemspec"))
  @bundled_specs["mime-types"].loaded_from = "#{dir}/specifications/mime-types-1.16.gemspec"
  @bundled_specs["mail"] = eval(File.read("#{dir}/specifications/mail-2.1.2.gemspec"))
  @bundled_specs["mail"].loaded_from = "#{dir}/specifications/mail-2.1.2.gemspec"
  @bundled_specs["rake"] = eval(File.read("#{dir}/specifications/rake-0.8.7.gemspec"))
  @bundled_specs["rake"].loaded_from = "#{dir}/specifications/rake-0.8.7.gemspec"
  @bundled_specs["railties"] = eval(File.read("#{dir}/specifications/railties-3.0.pre.gemspec"))
  @bundled_specs["railties"].loaded_from = "#{dir}/specifications/railties-3.0.pre.gemspec"
  @bundled_specs["memcache-client"] = eval(File.read("#{dir}/specifications/memcache-client-1.7.7.gemspec"))
  @bundled_specs["memcache-client"].loaded_from = "#{dir}/specifications/memcache-client-1.7.7.gemspec"
  @bundled_specs["rack"] = eval(File.read("#{dir}/specifications/rack-1.1.0.gemspec"))
  @bundled_specs["rack"].loaded_from = "#{dir}/specifications/rack-1.1.0.gemspec"
  @bundled_specs["rack-test"] = eval(File.read("#{dir}/specifications/rack-test-0.5.3.gemspec"))
  @bundled_specs["rack-test"].loaded_from = "#{dir}/specifications/rack-test-0.5.3.gemspec"
  @bundled_specs["rack-mount"] = eval(File.read("#{dir}/specifications/rack-mount-0.4.5.gemspec"))
  @bundled_specs["rack-mount"].loaded_from = "#{dir}/specifications/rack-mount-0.4.5.gemspec"
  @bundled_specs["actionpack"] = eval(File.read("#{dir}/specifications/actionpack-3.0.pre.gemspec"))
  @bundled_specs["actionpack"].loaded_from = "#{dir}/specifications/actionpack-3.0.pre.gemspec"
  @bundled_specs["bluecloth"] = eval(File.read("#{dir}/specifications/bluecloth-2.0.7.gemspec"))
  @bundled_specs["bluecloth"].loaded_from = "#{dir}/specifications/bluecloth-2.0.7.gemspec"
  @bundled_specs["activerecord"] = eval(File.read("#{dir}/specifications/activerecord-3.0.pre.gemspec"))
  @bundled_specs["activerecord"].loaded_from = "#{dir}/specifications/activerecord-3.0.pre.gemspec"
  @bundled_specs["text-format"] = eval(File.read("#{dir}/specifications/text-format-1.0.0.gemspec"))
  @bundled_specs["text-format"].loaded_from = "#{dir}/specifications/text-format-1.0.0.gemspec"
  @bundled_specs["actionmailer"] = eval(File.read("#{dir}/specifications/actionmailer-3.0.pre.gemspec"))
  @bundled_specs["actionmailer"].loaded_from = "#{dir}/specifications/actionmailer-3.0.pre.gemspec"
  @bundled_specs["tzinfo"] = eval(File.read("#{dir}/specifications/tzinfo-0.3.16.gemspec"))
  @bundled_specs["tzinfo"].loaded_from = "#{dir}/specifications/tzinfo-0.3.16.gemspec"
  @bundled_specs["activesupport"] = eval(File.read("#{dir}/specifications/activesupport-3.0.pre.gemspec"))
  @bundled_specs["activesupport"].loaded_from = "#{dir}/specifications/activesupport-3.0.pre.gemspec"
  @bundled_specs["activeresource"] = eval(File.read("#{dir}/specifications/activeresource-3.0.pre.gemspec"))
  @bundled_specs["activeresource"].loaded_from = "#{dir}/specifications/activeresource-3.0.pre.gemspec"
  @bundled_specs["rails"] = eval(File.read("#{dir}/specifications/rails-3.0.pre.gemspec"))
  @bundled_specs["rails"].loaded_from = "#{dir}/specifications/rails-3.0.pre.gemspec"
  @bundled_specs["mongo"] = eval(File.read("#{dir}/specifications/mongo-0.18.2.gemspec"))
  @bundled_specs["mongo"].loaded_from = "#{dir}/specifications/mongo-0.18.2.gemspec"
  @bundled_specs["mongo_mapper"] = eval(File.read("#{dir}/specifications/mongo_mapper-0.6.10.gemspec"))
  @bundled_specs["mongo_mapper"].loaded_from = "#{dir}/specifications/mongo_mapper-0.6.10.gemspec"

  def self.add_specs_to_loaded_specs
    Gem.loaded_specs.merge! @bundled_specs
  end

  def self.add_specs_to_index
    @bundled_specs.each do |name, spec|
      Gem.source_index.add_spec spec
    end
  end

  add_specs_to_loaded_specs
  add_specs_to_index

  def self.require_env(env = nil)
    context = Class.new do
      def initialize(env) @env = env && env.to_s ; end
      def method_missing(*) ; yield if block_given? ; end
      def only(*env)
        old, @only = @only, _combine_only(env.flatten)
        yield
        @only = old
      end
      def except(*env)
        old, @except = @except, _combine_except(env.flatten)
        yield
        @except = old
      end
      def gem(name, *args)
        opt = args.last.is_a?(Hash) ? args.pop : {}
        only = _combine_only(opt[:only] || opt["only"])
        except = _combine_except(opt[:except] || opt["except"])
        files = opt[:require_as] || opt["require_as"] || name
        files = [files] unless files.respond_to?(:each)

        return unless !only || only.any? {|e| e == @env }
        return if except && except.any? {|e| e == @env }

        if files = opt[:require_as] || opt["require_as"]
          files = Array(files)
          files.each { |f| require f }
        else
          begin
            require name
          rescue LoadError
            # Do nothing
          end
        end
        yield if block_given?
        true
      end
      private
      def _combine_only(only)
        return @only unless only
        only = [only].flatten.compact.uniq.map { |o| o.to_s }
        only &= @only if @only
        only
      end
      def _combine_except(except)
        return @except unless except
        except = [except].flatten.compact.uniq.map { |o| o.to_s }
        except |= @except if @except
        except
      end
    end
    context.new(env && env.to_s).instance_eval(File.read(@gemfile), @gemfile, 1)
  end
end

module Gem
  @loaded_stacks = Hash.new { |h,k| h[k] = [] }

  def source_index.refresh!
    super
    Bundler.add_specs_to_index
  end
end

但是当我尝试访问我的任何宝石时，例如MongoMapper, Paperclip, Haml等等。我得到：

NameError: uninitialized constant MongoMapper

对于任何其他宝石也是如此。 Bundler 不包含像旧 Rails 2.0 那样的 gem 吗？或者我的系统出了什么问题？

任何帮助将不胜感激，谢谢！

您需要在 Bundler 上升级到最新版本。完成此操作后，快速删除以前的版本gem cleanup，修复你的 Gemfile，然后执行bundle lock然后将以下代码添加到config/preinitializer.rb file:

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

# Auto-require all bundled libraries.
Bundler.require