Filter activeadmin with hstore

Question

I would like to use activeadmin filters with hstore:

In model I have got column amenities with Room.

I would like to do sth like this:

fil

Answer 1

With latest activeadmin (which uses ransack instead of meta_search) it's possible to define a custom ransacker for hstore field in a model:

class Room < ActiveRecord::Base
  store_accessor :options, :amenities

  ransacker :amenities do |parent|
    Arel::Nodes::InfixOperation.new('->', parent.table[:options], 'amenities')
  end
end

Then it can be used in activeadmin for filtering:

ActiveAdmin.register Room do
  filter :amenities_eq, label: 'Amenities', as: :select # ...
end