core/app/finders/spree/credit_cards/find.rb
module Spree
module CreditCards
class Find < ::Spree::BaseFinder
def execute
return scope.default.take if params[:id].eql?('default')
return scope.where(payment_method_id: params[:filter]['payment_method_id']) if params[:filter].present?
scope
end
end
end
end