How to pull out the names of dependent models with errors?

Question

Ruby on Rails

There is a complex order form that belongs to the Client and the Address. Accordingly in the controller:

def new
    @order = Order.new
    @order.build_kls_client
    @order.build_kls_address
end

Since the Client and Address are in tabs, the task is to mark the corresponding tab if the corresponding model fails the validation. To do this, you need to understand in which dependent models of the error.
Wrote this line:

o.errors.messages.keys.collect(&:to_s).select { |v| v.split('.')[1] }.map { |x| x.split('.')[0]}.uniq

How close is it to shitcode? Is there an easier way to get these names?