无法在 Ruby on Rails 中创建控制器答案

【问题标题】：Unable to create a controller in Ruby on Rails无法在 Ruby on Rails 中创建控制器
【发布时间】：2016-11-07 20:18:16
【问题描述】：

C:\Sites\blog\bin>rails generate controller Welcome index

我正在尝试为我的博客应用程序创建一个控制器。当我运行命令时，出现以下错误。

卸载是这里唯一的选择吗？

C:/Sites/blog/config/initializers/new_framework_defaults.rb:15:in `<top (required)>': undefined method `to_time_preserves_timezone=' for ActiveSupport:Module (NoMethodError)
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `load'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `block in load'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in `load_dependency'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `load'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/engine.rb:652:in `block in load_config_initializer'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/activesupport-4.2.5.1/lib/active_support/notifications.rb:166:in `instrument'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/engine.rb:651:in `load_config_initializer'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/engine.rb:616:in `block (2 levels) in <class:Engine>'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/engine.rb:615:in `each'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/engine.rb:615:in `block in <class:Engine>'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:30:in `instance_exec'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:30:in `run'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:55:in `block in run_initializers'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:226:in `block in tsort_each'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:418:in `block (2 levels) in each_strongly_connected_component_from'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:427:in `each_strongly_connected_component_from'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:417:in `block in each_strongly_connected_component_from'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:44:in `each'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:44:in `tsort_each_child'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:411:in `call'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:411:in `each_strongly_connected_component_from'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:347:in 
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:224:in `tsort_each'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/2.1.0/tsort.rb:205:in `tsort_each'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:54:in `run_initializers'
        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/railties-`require_application_and_environment!'

        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

【问题讨论】：

你用的是什么版本的rails？

标签： ruby-on-rails ruby controller rubygems runtime-error

【解决方案1】：

我猜，您使用的是 Windows 版本的 Rails，现在您正在尝试 Rails 的官方指南。这意味着你现在还没有创造任何东西。在重新安装 Rails 之前，我认为您应该尝试 bundle install 命令。如果这不起作用 - 请尝试重新安装。

【讨论】：