Helper reloading Problem

[timoschilling]

Senario:

ActiveAdmin.register User do
  index do
    column :name do |user|
      double user.name
    end
  end
end

module ApplicationHelper
  def double string
    string * 2
  end
end

If I add the name column after the server ist started, I got this error:

undefined method `double' for                   <div class="index_as_table"></div>
:ActiveAdmin::Views::IndexAsTable

If I restart the server, it works.

If I now change the method (like string * 3), AA shows the result of the old implementation until I restart the Server.

[seanlinsley]

This is a duplicate of #697