ruby-on-rails – 如何在Rails 3.2中找到“SystemStackError(堆

我尝试显示页面时出错,只有这个小堆栈跟踪：

SystemStackError in UserController#show

    stack level too deep
    SystemStackError (stack level too deep):
      activesupport (3.2.1) lib/active_support/callbacks.rb:415


      Rendered /home/barbacan/.rvm/gems/ruby-1.9.2-head/gems/actionpack-3.2.1/lib/action_dispatch/middleware/templates/rescues/_trace.erb (55.3ms)
      Rendered /home/barbacan/.rvm/gems/ruby-1.9.2-head/gems/actionpack-3.2.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (4.0ms)
      Rendered /home/barbacan/.rvm/gems/ruby-1.9.2-head/gems/actionpack-3.2.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (61.4ms)

日志不详细.

回调中会出现此问题：它是动态代码,并且很难调试.

您是否了解可帮助我调试和查找此问题根源的工具或方法？

谢谢！

编辑：

在Ruby / RoR中,有一种方法可以列出所有被称为列表的方法吗？