未定义的局部变量或方法“application_controller”对于主要：对象

Question

我在设置 Rails 应用程序时遇到问题。我们使用rails 3（我们也使用memcached），并且我安装了所有东西（DB，ruby，rubygems，rails，...）并配置了DB。因此，如果我运行rails server，应用程序就会正常启动。

对于生产，我们将使用 Apache 和 Phusion Passenger，两者均已成功安装。 出现此错误：

**

[ pid=1557 thr=-608134948 file=utils.rb:176 time=2011-08-13 12:51:05.974 ]: *** Exception NameError in PhusionPassenger::Rack::ApplicationSpawner (undefined local variable or method `application_controller' for main:Object) (process 1557, thread #<Thread:0xb78131b8>):
    from /media/Disc/ABC/CODE/TESTINGAPP/app/controllers/application.rb:1
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:239:in `require'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:239:in `require'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:227:in `load_dependency'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:239:in `require'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:346:in `require_or_load'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:300:in `depend_on'
    from /usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/dependencies.rb:216:in `require_dependency'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/engine.rb:138:in `eager_load!'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/engine.rb:137:in `each'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/engine.rb:137:in `eager_load!'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/engine.rb:135:in `each'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/engine.rb:135:in `eager_load!'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/application.rb:108:in `eager_load!'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/application/finisher.rb:41
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/initializable.rb:25:in `instance_exec'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/initializable.rb:25:in `run'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/initializable.rb:50:in `run_initializers'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `each'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/initializable.rb:49:in `run_initializers'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/application.rb:134:in `initialize!'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/application.rb:77:in `send'
    from /usr/lib/ruby/gems/1.8/gems/railties-3.0.3/lib/rails/application.rb:77:in `method_missing'
    from /media/Disc/ABC/CODE/TESTINGAPP/config/environment.rb:5
    from config.ru:3:in `require'
    from config.ru:3
    from /usr/lib/ruby/gems/1.8/gems/rack-1.2.1/lib/rack/builder.rb:46:in `instance_eval'
    from /usr/lib/ruby/gems/1.8/gems/rack-1.2.1/lib/rack/builder.rb:46:in `initialize'
    from config.ru:1:in `new'
    from config.ru:1

当我重新启动 apache 时， 首先我认为这可能是 memcached 的问题，比如 apache 缺少一些模块，但我读到 apache/passenger 不需要配置。

我的问题是，为什么应用程序无法启动？我是否忘记安装或配置某些内容？我真的不知道可能出了什么问题，因为应用程序可以通过rails服务器正常启动。

提前告知；）

Answer 1

看一下这个文件：

/media/Disc/ABC/CODE/TESTINGAPP/app/controllers/application.rb

从 Rails 2.3 开始，这个文件应该被称为 application_controller.rb 而不是 application.rb。重命名该文件，它应该可以工作：

/media/Disc/ABC/CODE/TESTINGAPP/app/controllers/application_controller.rb