Rails - Jan 2013 - Rails 3.2 jQuery JSONP request not working - Moved Permanently

I am trying to send a POST request ( ''remove_tag_named'' )and
getting a
simple OK back on success ; it doesn''t work.. 
the post is correctly sent , but after then it''s looping on sending a
GET
request to the same url, with the error
301 Moved Permanently 

I should not be far fro the solution, but I am stuck :

In my routes.rb  
      *namespace :administration* do
        *resource :dashboards*, :only => :show do
          collection do
            *post :remove_tag_named*
          end
        end
      end

In my view :
*= link_to t(:delete), "#", :id => :delete_tag_link*
     #   generated  html =>   <li><a id="delete_tag_link" 
href="#">remove</a></li>

my js.coffee  script (  # this should be using JSONP I guess )
  $(''*#delete_tag_link*'').bind "click", (e) ->
    selected = $(''#tags.tab-pane.active #tag-list li
span.myTag.selected'')
    tagName = selected.html()
    alert ''going remove tag: '' + tagName   # checking I get
the correct tag
value
    $.ajax 
      url: "/" + locale +
"/administration/dashboards/remove_tag_named.json"
      type: "POST"
      dataType: "json"
      contentType: "json"
      data: {"tag_name": tagName }
      success: (result) ->
        selected.remove()

I have also set an init js 

  $.ajaxSetup beforeSend: (xhr) ->
    xhr.setRequestHeader "X-CSRF-Token", 
$("meta[name=\"csrf-token\"]").attr("content")


and the console output :
[23:18:24.424] POST 
http://localhost:3000/fr/administration/dashboards/remove_tag_named.json 
[HTTP/1.1 301 Moved Permanently 46ms]
[23:18:24.491] GET 
http://localhost:3000/fr/administration%2Fdashboards%2Fremove_tag_named.json 
[HTTP/1.1 301 Moved Permanently 34ms]
[23:18:24.547] GET 
http://localhost:3000/fr/administration%2Fdashboards%2Fremove_tag_named.json 
[HTTP/1.1 301 Moved Permanently 35ms]
[23:18:24.550] GET 
http://localhost:3000/fr/administration%2Fdashboards%2Fremove_tag_named.json 
[HTTP/1.1 301 Moved Permanently 48ms]
.........  more GET......




-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To view this discussion on the web visit
https://groups.google.com/d/msg/rubyonrails-talk/-/0HqnJZ1thRsJ.
For more options, visit https://groups.google.com/groups/opt_out.