module Middleman::CoreExtensions::Rendering::InstanceMethods

def render(engine, data, options={}, &block)
  data = data.to_s
  locals = options[:locals]
  found_partial = false
  engine        = nil
  # If the path is known to the sitemap
  if resource = sitemap.find_resource_by_path(current_path)
    current_dir = File.dirname(resource.source_file)
    engine = File.extname(resource.source_file)[1..-1].to_sym
    # Look for partials relative to the current path
    if current_dir != self.source_dir
      relative_dir = File.join(current_dir.sub("#{self.source_dir}/", ""), data)
      # Try to use the current engine first
      found_partial, found_engine = resolve_template(relative_dir, :preferred_engine => engine, :try_without_underscore => true)
      # Fall back to any engine available
      if !found_partial
        found_partial, found_engine = resolve_template(relative_dir, :try_without_underscore => true)
      end
    end
  end
  # Look in the root for the partial with the current engine
  if !found_partial && !engine.nil?
    found_partial, found_engine = resolve_template(data, :preferred_engine => engine, :try_without_underscore => true)
  end
  # Look in the root with any engine
  if !found_partial
    found_partial, found_engine = resolve_template(data, :try_without_underscore => true)
  end
  # Render the partial if found, otherwide throw exception
  if found_partial
    render_individual_file(found_partial, locals, options, self, &block)
  else
    raise ::Middleman::CoreExtensions::Rendering::TemplateNotFound, "Could not locate partial: #{data}"
  end
end