# File lib/dragonfly/server.rb, line 76
    def url_for(job, opts={})
      opts = opts.dup
      host = opts.delete(:host) || url_host
      path_prefix = opts.delete(:path_prefix) || url_path_prefix
      params = job.url_attributes.extract(url_mapper.params_in_url)
      params.merge!(stringify_keys(opts))
      params['job'] = job.serialize
      params['sha'] = job.sha if verify_urls
      url = url_mapper.url_for(params)
      "#{host}#{path_prefix}#{url}"
    end