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path: root/actionpack/lib/action_view/template_handlers/builder.rb
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require 'builder'

module ActionView
  module TemplateHandlers
    class Builder < TemplateHandler
      include Compilable

      def self.line_offset
        2
      end

      def compile(template)
        content_type_handler = (@view.send!(:controller).respond_to?(:response) ? "controller.response" : "controller")

        "#{content_type_handler}.content_type ||= Mime::XML\n" +
          "xml = ::Builder::XmlMarkup.new(:indent => 2)\n" +
          template.source +
          "\nxml.target!\n"
      end

      def cache_fragment(block, name = {}, options = nil)
        @view.fragment_for(block, name, options) do
          eval('xml.target!', block.binding)
        end
      end
    end
  end
end