utils.js

/*
 * Small serialize form snippet supporting one level nested attributes.
 */
$.fn.serializeObject = function() {
  var o = {};
  var a = this.serializeArray();
  var pattern = /\[[\w\d\(\)_]+\]/;
  $.each(a, function() {
    var key = this.name;
    var name = key.replace(/^\w+\[/, '').replace(/\]/, '');
    key = key.replace(pattern, '');
    o[key] = o[key] || [];
    if (this.name != key) {
      if (o[key].length == 0) {
        var hash = {};
        hash[name] = this.value;
        o[key].push(hash);
      } else {
        for(var i = 0; i < o[key].length; i++) {
          if (!o[key][i][name]) {
            o[key][i][name] = this.value;
            break;
          }
        }
      }
    } else {
      o[key] = this.value
    }
  });

  return o;
};