rails form object

company_registration_form.rb

class CompanyRegistrationForm
  include ActiveModel::Model

  attr_accessor :name, :address
  attr_reader :employees_attributes
  attr_reader :president_attributes

  def company
    @company ||= Company.new
  end

  def employees
    @employees_attributes ||= [Employee.new]
  end

  def employees_attributes=(attributes)
    @employees_attributes = attributes.map {|attr|
      Employee.new(attr)
    }
  end

  def president
    @president_attributes ||= president.new
  end

  def president_attributes=(attributes)
    @president_attributes = President.new(attributes.first)
  end

  def save
    company.assign_attributes(company_params)
    build_asscociations

    company.save
  end

  private

  def company_params
    {
      name: name,
      address: address
    }
  end

  def build_asscociations
    company.employees << employees
    company.president = president
  end

  def validate_something
    # Do something
  end
end