ruby on rails - Routing to a page from JavaScript side -

currently this:

+    var go_to = "http://localhost:3000" + url;  +    window.open(go_to); 

which takes index action of rail controller , shows page.

two things want improve: 1- hard coding "http://localhost:3000" dead wrong. right way?

2- there better way of talking rails js side open new window?

to go web root, use:

    window.location = '/'; 

you can other page, such as:

    window.location = '/about/'; 

starting destination '/' change page within site / current domain. locally it'll localhost:3000/ when live on server, go http://www.mydomain.com/

also if you're looking better way talk rails urls application, can use routes variables. in console run rake routes , it'll list routes have. variable root_path return / or whatever root path may set within app.

    <%= link_to "home", root_path, target: '_blank' %>