ActiveAdmin：如何覆盖索引控制器操作：nil：NilClass的未定义方法“ base” [英] ActiveAdmin: How to override index controller action: undefined method `base' for nil:NilClass

问题描述

我正在尝试覆盖ActiveAdmin控制器的索引操作，以使其显示current_user的结果而不是所有结果。

I'm trying to override the index action of the ActiveAdmin controller for it to display results for the current_user instead of all results.

controller do
  def index
    @user_tasks = UserTask.where(:user_id => current_user.id).page(params[:page])
  end
end

访问ActiveAdmin时，抛出异常：

When accessing ActiveAdmin, an exception in thrown:

ActionView::Template::Error (undefined method `base' for nil:NilClass):
    1: render renderer_for(:index)

我正在使用rails 3.1和最新的ActiveAdmin版本。 gem activeadmin，：git => 'https://github.com/gregbell/active_admin.git'。

I'm using rails 3.1 and the latest ActiveAdmin version. gem "activeadmin", :git => 'https://github.com/gregbell/active_admin.git'.

推荐答案

这是

ActiveAdmin 0.4.4现在支持范围界定查询，而无需覆盖此方法。
，请参阅此处： http://activeadmin.info/docs/2 -resource-customization.html＃scoping_the_queries

ActiveAdmin 0.4.4 now supports scoping queries without overriding this method. please see here: http://activeadmin.info/docs/2-resource-customization.html#scoping_the_queries

如果您的管理员具有不同的访问级别，则有时
可能需要范围他们可以访问的内容。假设您的用户模型具有
正确的has_many关系，则可以简单地对清单
和查找者进行范围划分：

If your administrators have different access levels, you may sometimes want to scope what they have access to. Assuming your User model has the proper has_many relationships, you can simply scope the listings and finders like so:

 ActiveAdmin.register Post do
     scope_to :current_user

     # or if the association doesn't have the default name.
     # scope_to :current_user, :association_method => :blog_posts
 end

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