preloader_for

# File activerecord/lib/active_record/associations/preloader.rb, line 163
      def preloader_for(reflection)
        case reflection.macro
        when :has_many
          reflection.options[:through] ? HasManyThrough : HasMany
        when :has_one
          reflection.options[:through] ? HasOneThrough : HasOne
        when :has_and_belongs_to_many
          HasAndBelongsToMany
        when :belongs_to
          BelongsTo
        end
      end