Question

当我使用memcache（gem）和rails 3.0.0beta

启动项目时出现此错误

以下是完整的跟踪：

/Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/activesupport-3.0.0.beta4/lib/active_support/cache/mem_cache_store.rb:39:in `build_mem_cache': uninitialized constant ActiveSupport::Cache::MemCacheStore::MemCache (NameError)
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/activesupport-3.0.0.beta4/lib/active_support/cache/mem_cache_store.rb:65:in `initialize'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/activesupport-3.0.0.beta4/lib/active_support/cache.rb:64:in `new'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/activesupport-3.0.0.beta4/lib/active_support/cache.rb:64:in `lookup_store'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/railties-3.0.0.beta4/lib/rails/application/bootstrap.rb:47
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/activesupport-3.0.0.beta4/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/activesupport-3.0.0.beta4/lib/active_support/core_ext/kernel/reporting.rb:22:in `with_warnings'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/activesupport-3.0.0.beta4/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/railties-3.0.0.beta4/lib/rails/application/bootstrap.rb:47
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/railties-3.0.0.beta4/lib/rails/initializable.rb:25:in `instance_exec'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/railties-3.0.0.beta4/lib/rails/initializable.rb:25:in `run'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/railties-3.0.0.beta4/lib/rails/initializable.rb:55:in `run_initializers'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/railties-3.0.0.beta4/lib/rails/initializable.rb:54:in `each'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/railties-3.0.0.beta4/lib/rails/initializable.rb:54:in `run_initializers'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/railties-3.0.0.beta4/lib/rails/application.rb:119:in `initialize!'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/railties-3.0.0.beta4/lib/rails/application.rb:81:in `send'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/railties-3.0.0.beta4/lib/rails/application.rb:81:in `method_missing'
    from /Users/netbe/Projects/banana/config/environment.rb:5
    from config.ru:3:in `require'
    from config.ru:3
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/rack-1.1.0/lib/rack/builder.rb:46:in `instance_eval'
    from /Users/netbe/.rvm/gems/ruby-1.8.7-p249/gems/rack-1.1.0/lib/rack/builder.rb:46:in `initialize'
    from config.ru:1:in `new'
    from config.ru:1

以下是来自我的environment.rb，第5行：模块缓存

的一些代码

require 'active_support/cache'
module ActiveSupport
  module Cache
    class MemCacheStore < Store
      def logger
        Rails.logger
      end
    end
  end
end

有没有人可以猜到这里有什么问题，这是轨道3的问题吗？

Answer 1

实际上你没有在你的Gemfile中添加gem“memcache-client”，显然你只有gem“memcache”

Answer 2

我认为我的答案太晚了:)但可能对某人有所帮助。我有同样的错误，问题出在lib / memcache.rb目录中的文件名。重命名后，项目照常启动。

未初始化的常量ActiveSupport :: Cache :: MemCacheStore :: MemCache

2 个答案: