tilt-jrb.rb

require 'tilt'
require 'yajl'

module Tilt
  class JrbBuilder < Template

    def prepare
      @code = data
    end

    def precompiled_template(locals)
      @code
    end

    def collection(objects)
      output = {
        href:       "http://example.com/databases",
        item_count: objects.size,
        items:      objects.map { |o| render(o) }
      }

      ::Yajl::Encoder.encode(
        output,
        :pretty => true
      )
    end
  end

  register 'jrb', JrbBuilder
end