Ruby on rails ActiveAdmin——如何引用当前对象？

如何引用当前正在查看的对象的实例

以下有效

ActiveAdmin.register Example do

  sidebar "test" do
    @name = example.name
  end

end

以下不起作用

ActiveAdmin.register Example do

  member_action :some_stuff, :method => :put do
    @name = example.name
  end

end

如何在member_操作中引用对象

---

或者我必须创建另一个实例吗？

大多数活动管理文档都已过时或完全不存在。如果你想知道如何使用它的细节，你可能需要阅读源代码并希望有人对函数进行评论

详情如下:

# Member Actions give you the functionality of defining both the
# action and the route directly from your ActiveAdmin registration
# block.
#
# For example:
#
#   ActiveAdmin.register Post do
#     member_action :comments do
#       @post = Post.find(params[:id]
#       @comments = @post.comments
#     end
#   end
#
# Will create a new controller action comments and will hook it up to
# the named route (comments_admin_post_path) /admin/posts/:id/comments
#
# You can treat everything within the block as a standard Rails controller
# action.
# 

---

这使他们看起来好像希望您在自定义操作中执行自己的对象查找-

Post.find（params[：id]）

您可以使用“资源”对象

ActiveAdmin.register Example do

  member_action :some_stuff, :method => :put do
    @name = resource.name
  end

end