gistfile1.rb

I am having problem with routes in Ruby and hope that someone can help me. I have problem understanding how routes works. My code is generating the following url:
http://localhost:3000/getnotes/category/?id=1 and I am getting this error:
Routing Error
No route matches "/getnotes/category"
How can I get it to work?
this url works for some reason but I can't use it since I later need encode my data before sending it.
http://localhost:3000/getnotes/category/1.js

 
Jquery code to get the notes 
function getWithAjax(url, data) {
    $.ajax({
        beforeSend: function(xhr) {xhr.setRequestHeader("Accept", "text/javascript")},
        url: url,
        data: data

      });
};
function getNotesByCategory(id){
    getWithAjax("/getnotes/category/",{ id: id});
};
I have a route 
get '/getnotes/category/:id', :to => "notes#category", :as => 'notes'

my rake routes shows
notes GET    /getnotes/category/:id(.:format) {:controller=>"notes", :action=>"category"}

My Action
    def category

    category = Category.find(params[:id])
    json = Array.new
    @notes = category.notes
    respond_to do |format|
      format.json { render :json => category.notes }
      format.js

    end
  end