tilt/yajl rails

app-views-updates-index.json.yajl

json = {
  :as_of => @search.until.in_time_zone.xmlschema
}

if @updates.max_distance
  json[:next_offset]  = @search.next_offset
  json[:distance]     = @updates.max_distance
end

json[:updates] = @updates.map do |el|
  {
    :text       => el.text,
    :image_url  => el.image_url,
    :lat        => el.lat,
    :lon        => el.lon,
    :distance   => el.distance,
    :url        => el.url,
    :has_thread => el.has_thread,
    :created_at => el.created_at.in_time_zone.xmlschema,
    :profile    => {
      :user_name      => el.profile.user_name,
      :user_handle    => el.profile.user_handle,
      :user_image     => el.profile.user_image,
      :description    => el.profile.description,
      :url            => el.profile.url,
      :friend         => el.profile.friend,
      :favorite       => el.profile.favorite,
      :profile_views  => 0
    },
    :sources    => el.sources.map do |source|
      {
        :update_id    => source.update_id,
        :uid          => source.uid,
        :user_name    => source.user_name,
        :user_handle  => source.user_handle,
        :user_image   => source.user_image,
        :description  => source.description,
        :url          => source.url,
        :friend       => source.friend,
        :favorite     => source.favorite,
        :provider     => source.provider_key
      }
    end
  }
end

config-initializers-yajl_template_handler.rb

require './lib/yajl_template_handler'

ActionView::Template.register_template_handler('yajl', YajlTemplateHandler )

lib-yajl_template_handler.rb

module YajlTemplateHandler
  def self.erb_handler
    @@erb_handler ||= ActionView::Template.registered_template_handler(:erb)
  end

  def self.call(template)
    compiled_source = erb_handler.call(template)
    "Tilt::YajlTemplate.new{ #{compiled_source} }.render(self)"
  end
end