How to get variable from javascript to rails -

i such javascript:

  fb.api('/me', function(response) {       var name = response.name;           first_name = response.first_name;       alert("name: "+ name + "\nfirst name: "+ first_name);} 

how value of name , first_name rails controller? use rails 3.2.

place value of javascript array in request parameter, either via ajax or setting value of form input. i'm going use jquery in examples:

option 1 (ajax):

$.post('/users/some_action', {"name" : name, "first_name", first_name}) 

option 2 (setting form):

$('#name').val(name) $('#first_name').val(first_name) 

in controller:

name = params[:name] first_name = params[:first_name]