Applying Clean Architecture: Repository

business_profiles_repository.rb

module Repositories
  class BusinessProfiles
    def find business_id
      data_model = ::BusinessProfile.find_by business_id: business_id

      if data_model
        fields = fields_for data_model
        profile = Nav::Entities::BusinessProfile.new data_model.business_id
        fields.each { |name, value| profile.send(:"#{name}=", value) }
      else
        profile = Nav::Entities::BusinessProfile.new 0
        profile.errors << "can not find Business Profile with ID #{business_id}"
      end

      profile
    end

    def update for_id:, fields: {}
      ActiveRecord::Base.transaction do
        profile = BusinessProfile.find_or_create_by! business_id: for_id

        fields.each do |name, value|
          Field.create! business_profile: profile,
                        name:             name,
                        value:            value,
                        reported_at:      DateTime.now
        end
      end

      find for_id
    end

    private

    def fields_for data_model
      # ...
    end
  end
end