app/admin/signature.rb
ActiveAdmin.register Signature do
permit_params :name, :email, :organization, :reason, :contact_person,
:anonymous, :confirmed
index do
selectable_column
id_column
column :name
column :email
column :organization
column :contact_person
column :pledge, sortable: 'pledges.title'
column :reason
column :anonymous
column :created_at
column :confirmed
actions
end
controller do
def scoped_collection
super.includes :pledge # prevents N+1 queries to your database
end
end
end