class ActionView::TemplateRenderer

def render(context, options)
  @view    = context
  @details = extract_details(options)
  template = determine_template(options)
  context  = @lookup_context
  prepend_formats(template.formats)
  unless context.rendered_format
    context.rendered_format = template.formats.first || formats.first
  end
  render_template(template, options[:layout], options[:locals])
end