我正试图在终端中运行它：
rails generate controller welcome index
但是，它没有创建控制器。该过程以退出代码0完成。
有什么想法吗？
修改
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ffi (1.0.11)
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railties (3.2.3)
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答案 0 :(得分：8)
我遇到了同样的问题。我发现这是因为我之前已经禁用了活动记录。在config / application.rb中，确保行：
require "active_record/railtie"
未被注释。之后它应该工作（同样，确保你有一个有效的config / database.yml文件）。
答案 1 :(得分：6)
我遇到了同样的问题。当我在另一个Rails-app中运行该命令时，它只是在这个特定的项目中没有！
原来答案是这样的：我偶然创建了自己的发电机命名控制器！如果使用命令“rails g generator controller”，则会发生这种情况。
然后创建了一个自定义控制器（您可以在lib / generators / controller / controller_generator中找到它），当我使用“rails g controller welcome index”时，它是我自己的运行器，它当然没有做任何事情！
不知怎的，我认为应该通过使用rails（至少默认）阻止我意外创建发生器来避免这个错误！我知道这很愚蠢，但它发生在我身上。
答案 2 :(得分：2)
有趣的问题。我读了你所有的环境信息，看起来绝对没问题，你正在使用RVM，Gemset正在使用，Rubymine等等。
我不确定解决方案，但我有几种方法可以尝试，所以我要分享这些。
也许您的Gemset正在使用中，但在您第一次尝试时却没有使用过。检查Ribymine的设置，如果它能正确看到您的RVM设置。
其他Rubymine任务进展顺利，没有任何问题？服务器正确启动？
尝试rails generate - 如果Rails命令有效，那么你必须看到一些关于你可以生成什么的基本帮助信息。
尝试简单的rails g controller欢迎，您可以稍后添加索引方法。
从shell尝试使用rails -v查看Rails版本以及它是否正确使用。也许这对于第一次拍摄看起来很白痴，但是当你没有将Gemset设置为默认值时，你可能会感到很挣扎。
检查/脚本文件夹，是否有rails.rb？您是否修改过此文件或已将其删除？
尝试其他rails评论，首先尝试生成模型，然后尝试rake任务以查看发生的其他问题。
如果没有更多的错误信息，我很难猜到更多，尽我所能。也许这些是新手的东西，但很好意识到可能导致问题的原因。祝你好运！