模板错误

Question

我的Rails应用程序正常工作本地。但是，一旦我把它放在一个服务器上，并在生产模式下，我得到这个错误：

ActionView::TemplateError (undefined method `each' for nil:NilClass) on line #7 of app/views/admin/confirm.rhtml:
4: <br>Description:
5: <br><%= @description %>
6: <br>Features:
7: <% @features.each do |feature| %>
8:      <br><%= feature.humanize %>
9: <% end %>
10: <br>Role data:

   app/views/admin/confirm.rhtml:7
   /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/renderable.rb:39:in `send'
   /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/renderable.rb:39:in `render'
   /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/template.rb:73:in `render_template'
   /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/base.rb:256:in `render'
   /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/base.rb:367:in `_render_with_layout'
   /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/base.rb:254:in `render'
   /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/base.rb:1174:in `render_for_file'
   /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/base.rb:896:in `render_without_benchmark'

任何人有任何的想法是什么意思？

编辑：行我发现@features是零。但我不知道是怎么回事。在我创建操作我有：

flash[:name] = params[:name]
flash[:description] = params[:description]
flash[:role_data] = params[:role_data]
flash[:user_data] = params[:user_data]
flash[:features] = params[:features]
flash[:theme] = params[:theme]
redirect_to :action => "confirm"       

然后在我确认我的行动有：

def confirm
    @title = "Create a new simulation"
    @features = flash[:features]
    @name = flash[:name]
    @description = flash[:description]
    @role_data = flash[:role_data]
    @user_data = flash[:user_data]
    @theme = flash[:theme]
    flash.keep
  end

Answer 1

您@features实例变量是零该实例

Answer 2

您应该使用会话对象的动作之间传递数据。 Flash是行动，而不是数据之间传递消息！

Answer 3

我认为你需要，因为你使用flash.keep而不是redirect_to把render在创建行动。

从的ActionController ::闪存:: FlashHash

  

当你需要一个对象传递到当前的行动，你现在用的，和你的对象将消失在当前的动作就完成了。

     

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