activeadmin/activeadmin — pull request #3496 by bolshakov (2014-10-17 09:35:09+00:00)
Title: Add ability to pass columns names as argument to table_for helper

```ruby
table_for user.posts, :title, :created_at do
column :actions do |post|
link_to 'Approve', approve_admin_posts_path(post, method: :post)
end
end
```