Active Admin Custom Join Table for Filter

Question

I am using Active Admin with metasearch. I have a habtm relationship but the join table is not the default one. I have

class Person < ActiveRecord::Base
  has_and_belongs_to_many :events, :join_table => 'events_staff'
end

class Event < ActiveRecord::Base
  has_and_belongs_to_many :staff, :class_name => 'Person', :join_table => 'events_staff'
end

When I use active admin, I wanted something like:

ActiveAdmin.register Person do
  filter :events, :join_table => 'events_staff'
end

Renaming the models is not an option. How do I do this?

Answer 1

Ok this question: How do I do multiple has_and_belongs_to_many associations between the same two classes? gave me a strategy to rename my relation in the Person model. So now I have:

class Person < ActiveRecord::Base
  has_and_belongs_to_many :staffed_events, :join_table => 'events_staff', :class_name => 'Event'
end

And my filter is filter :staffed_events