How can I optimize active_admin

Question

When I use active_admin with tables that have 5000+ records in them everything becomes very slow. How I can optimise it? Does anybody know some plugins which would allow me to load the data asynchronously?

Answer 1

There are a couple things you can do.

By default, Active Admin loads associations as drop-down filters on the index page. If those filters aren't being used, it helps to remove them because they instantiate every record of that model to build the drop-down.

ActiveAdmin.register Post do
  remove_filter :categories
end

If your index page has columns that depend on associated records, it helps to eager-load them.

ActiveAdmin.register Post do
  controller do
    def scoped_collection
      super.includes :author, :publisher
    end
  end
end

This doesn't really apply since you only have 5000 records, but if you get to the point where even a DB COUNT of the table takes a long time, you might want to disable the count in the bottom right of the index page. (this feature was added in 0.6.1)

ActiveAdmin.register Post do
  index pagination_total: false
end