form.rb

= simple_form_for person, remote: true do |f|
  .row
    .col-xs-12.col-sm-12.col-md-6
      = f.fields_for :address do |builder|
        = render 'form_address', f: builder

form_address.rb

.row
  .col-xs-12.col-sm-12.col-md-12
    %strong
      %small= t 'activemodel.models.address.one'
.row
  .col-xs-6.col-sm-4.col-md-4
    = f.input :zip, input_html: {class: 'uppercase'}
  .col-xs-12.col-sm-2.col-md-2
    = f.input :state_abbr, input_html: {class: 'uppercase fetch-me'}, label: 'UF'
  .col-xs-12.col-sm-6.col-md-6
    = f.input :city, input_html: {class: 'uppercase fetch-me'}
.row
  .col-xs-12.col-sm-4.col-md-4
    = f.input :province, input_html: {class: 'uppercase fetch-me'}
  .col-xs-12.col-sm-8.col-md-8
    = f.input :street, input_html: {class: 'uppercase fetch-me'}
.row
  .col-xs-8.col-sm-8.col-md-8
    = f.input :compl, label: 'Compl', input_html: {class: 'uppercase fetch-me'}
  .col-xs-4.col-sm-4.col-md-4
    = f.input :number, label: 'Number', input_html: {class: 'fetch-me'}

people_controller.rb

class PeopleController < ApplicationController
  respond_to :html, :js, :json
  responders :flash, :http_cache

  def new
    @person = Person.new
    authorize @person
    @person.build_address
  end

  def edit
    @person = get_person(params[:id])
    authorize @person
  end

  def create
    @person = Person.new(person_params)
    authorize @person

    if @person.save

    else
      respond_with(@person.errors, status: :unprocessable_entity)
    end
  end

  def update
    @person = get_person(params[:id])
    authorize @person

    if @person.update(person_params)

    else
      respond_with(@person.errors, status: :unprocessable_entity)
    end
  end

  private

  def get_persons
    Person.all.decorate
  end

  def get_person(params_id)
    Person.find(params_id).decorate
  end

  def person_params
    params.require(:person).permit(*policy(@person || Person).permitted_attributes)
  end

end

person_policy.rb

class PersonPolicy < ApplicationPolicy
  def permitted_attributes
    if @user.has_role?(:thorx) || @user.has_role?(:admin)
      [:cpf, :name, :rg, :birth, :birth_text, :email, :phone, {card_ids: []},
       :cnh,  {category_ids: []}, :original_updated_at,
       {address_attributes: [:id, :zip, :city, :province, :state, :state_abbr,
                             :nation, :street, :compl, :number, :person_id]}
      ]
    end
  end
end