def url_for(options)
options = self.class.default_url_options.merge(options)
url = ''
unless options.delete(:only_path)
url << (options.delete(:protocol) || 'http')
url << '://' unless url.match("://")
raise "Missing host to link to! Please provide :host parameter or set default_url_options[:host]" unless options[:host]
url << options.delete(:host)
url << ":#{options.delete(:port)}" if options.key?(:port)
else
[:protocol, :host, :port, :skip_relative_url_root].each { |k| options.delete(k) }
end
trailing_slash = options.delete(:trailing_slash) if options.key?(:trailing_slash)
url << ActionController::Base.relative_url_root.to_s unless options[:skip_relative_url_root]
anchor = "##{CGI.escape options.delete(:anchor).to_param.to_s}" if options[:anchor]
generated = Routing::Routes.generate(options, {})
url << (trailing_slash ? generated.sub(/\?|\z/) { "/" + $& } : generated)
url << anchor if anchor
url
end