convert_to_id

# File activerecord/lib/active_record/relation/predicate_builder/association_query_value.rb, line 59
        def convert_to_id(value)
          if primary_key.is_a?(Array)
            primary_key.map do |attribute|
              if attribute == "id"
                value.id_value
              else
                value.public_send(attribute)
              end
            end
          elsif value.respond_to?(primary_key)
            value.public_send(primary_key)
          else
            value
          end
        end