无法运行Rails 3.2服务器

Question

我正在尝试运行this app，它的最后一次提交大约是在一年前。在花了相当长的时间尝试安装所有的gem和gem依赖项(包括注释掉metric-fu gem)之后，我能够得到绿灯消息"bundle is complete“。但是，在运行服务器时，我得到以下错误日志：

Rails 3.2.9 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /Users/zallanx/rails_projects/smartr/config/environment.rb:5)
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /Users/zallanx/rails_projects/smartr/config/environment.rb:5)
Exiting
/Users/zallanx/rails_projects/smartr/config/environments/development.rb:26:in `block in <top (required)>': uninitialized constant Sass::Plugin (NameError)
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/railtie/configurable.rb:24:in `class_eval'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/railtie/configurable.rb:24:in `configure'
    from /Users/zallanx/rails_projects/smartr/config/environments/development.rb:1:in `<top (required)>'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/engine.rb:571:in `block in <class:Engine>'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/initializable.rb:30:in `instance_exec'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/initializable.rb:30:in `run'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/initializable.rb:55:in `block in run_initializers'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/initializable.rb:54:in `each'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/initializable.rb:54:in `run_initializers'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/application.rb:136:in `initialize!'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /Users/zallanx/rails_projects/smartr/config/environment.rb:5:in `<top (required)>'
    from /Users/zallanx/rails_projects/smartr/config.ru:2:in `block in <main>'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/rack-1.4.1/lib/rack/builder.rb:51:in `instance_eval'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/rack-1.4.1/lib/rack/builder.rb:51:in `initialize'
    from /Users/zallanx/rails_projects/smartr/config.ru:1:in `new'
    from /Users/zallanx/rails_projects/smartr/config.ru:1:in `<main>'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/rack-1.4.1/lib/rack/builder.rb:40:in `eval'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/rack-1.4.1/lib/rack/builder.rb:40:in `parse_file'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/rack-1.4.1/lib/rack/server.rb:200:in `app'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/commands/server.rb:46:in `app'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/rack-1.4.1/lib/rack/server.rb:301:in `wrapped_app'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/rack-1.4.1/lib/rack/server.rb:252:in `start'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/commands/server.rb:70:in `start'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/commands.rb:55:in `block in <top (required)>'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/commands.rb:50:in `tap'
    from /Users/zallanx/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.2.9/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:9:in `require'
    from script/rails:9:in `<main>'

是不是老的Rails2.3插件把我抛弃了？这是我在Hartl的Rails教程之后的第一个“真实世界”项目，所以不幸的是，我没有太多处理这类错误的经验。这款名为smartr的应用程序的Gemfile是linked。谢谢！！

Answer 1

Here是一篇可以帮助你运行旧的应用程序wint Rails 4的文章。请阅读这一部分没有更多的供应商/插件，它描述了如何解决你的一个问题。

关于sass插件的第二个问题可以通过在development.rb中注释26字符串来解决。它必须在Rails 3应用程序中的其他地方编写。

Answer 2

当我在供应商文件夹中有一些2.x插件时，我得到了类似的错误。在我删除它们之后，错误就消失了。

Answer 3

Sass在gemfile中，但它的版本不受限制。由于该项目已有一年未被修改，因此该项目可能会期待一个较旧版本的Sass。你应该尝试在Gemfile中研究降级sass并执行bundle update，看看会发生什么。另外，一年前Rails 3.2还没有发布，所以我不会在Rails 3.2上运行这个应用程序。