preloaders_on

# File activerecord/lib/active_record/associations/preloader.rb, line 110
      def preloaders_on(association, records, scope)
        case association
        when Hash
          preloaders_for_hash(association, records, scope)
        when Symbol
          preloaders_for_one(association, records, scope)
        when String
          preloaders_for_one(association.to_sym, records, scope)
        else
          raise ArgumentError, "#{association.inspect} was not recognized for preload"
        end
      end