module Roda::RodaPlugins::Render::InstanceMethods

def cached_template(opts, &block)

to get the template.
If caching templates, attempt to retrieve the template from the cache. Otherwise, just yield

def cached_template(opts, &block)
  if key = opts[:cache_key]
    cache = render_opts[:cache]
    unless template = cache[key]
      template = cache[key] = yield
    end
    template
  else
    yield
  end
end