Exportar todas las rutas con nombre de Ruby on Rails a Javascript (solo Rails 4)

app / assets / javascripts / routes.js.erb:

<%# export all named routes in javascript %>
Routes = {

<% routes = Rails.application.routes.routes.named_routes %>
<% routes.each_value do |route| %>
<%= "#{route.name}_path".to_json %>: function(<%= [route.required_parts + [""]].join(", ") %>format) {
var base =
<%= route.format(Hash[route.required_parts.map { |p| [p, "__#{p}__"] }].merge(format: "__format__")).to_json %>;
<% route.required_parts.each do |param| %>
base = base.replace(
<%= "__#{param}__".to_json %>, <%= param.to_s %>);
<% end %>
if (format != null) {

base = base.replace("__format__", format);

} else {

base = base.replace(".__format__", "");

}

return base;

},

<% end %>
}