rails视图中的类变量？

Question

是否可以在视图中引用ruby类变量？

Answer 1

更常见的方法是将类变量包装在辅助方法中:

# in /app/controllers/foo_controller.rb:
class FooController < ApplicationController
  @@bar = 'baz'

  def my_action
  end

  helper_method :bar

  def bar
    @@bar
  end
end

# in /app/views/foo/my_action.html.erb:
It might be a class variable, or it might not, but bar is "<%= bar -%>."