Rails 中的全局变量 [英] Global variable in Rails

问题描述

我的 Rails 应用程序中有一个反馈表.反馈表单需要初始化@support 变量，并且它应该在每个页面上都可见.初始化很短:

I have a feedback form in my Rails application. The feedback form requires initializing of the @support variable, and it should be visible on every page. The initialization is very short:

@support = Support.new(:id => 1)

但是，最好将此变量初始化一次并从任何地方访问它.这怎么可能?

However it would be nice to have this variable initialized once and access it from everywhere. How is that possible to do?

推荐答案

您可以使用辅助方法(在应用程序控制器中)来初始化支持变量.像这样:

you can use a helper method (in the application controller) to initialize the support variable . Something like this :

class ApplicationController < ..
   ...
   helper_method :my_var

   def my_var
      @support = Support.new(:id => 1)
   end
   ...

 end

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