Ruby on rails 在特定于环境的配置文件中未定义配置

当我在本地启动服务器时，会收到以下通知：

please set config.active_support.deprecation to :log at config/environments/development.rb

当我添加config/environments/development.rb时

config.active_support.deprecation = :log 

我得到：

undefined local variable or method `config' for main:Object (NameError)

我的环境： Rails 3.0.1 Ruby 1.8.7 Ubuntu 10.04

Development.rb文件

# Settings specified here will take precedence over those in config/environment.rb

# In the development environment your application's code is reloaded on
# every request.  This slows down response time but is perfect for development
# since you don't have to restart the webserver when you make code changes.
config.active_support.deprecation = :log
config.cache_classes = false

---

确保在*.configure循环中添加其他config.*选项所在的行。

在development.rb中，它应该有一个如下所示的块：

YourApplicationName::Application.configure do
   config.active_support.deprecation = :log
   config.cache_classes = false
end

配置行必须放在该块内。

试试这个

 rails s -e development

---

我很困惑。Anything confing.*在config/environments/development.rb文件中给出了相同的错误。您可以发布部分/全部development.rb文件吗？