How add hash parameter to url using redirect_to?

How add hash parameter to url using redir开发者_开发百科ect_to?

For example:

http://localhost/products/#{page:2}

---

Best way to do it will be.

 redirect_to :action => :index, :anchor => "order"

---

use something like

redirect_to url_for(:action=>:index)+"#order"