Backbone.ajax = function() {
  var data = {};
  if (arguments[0].type && arguments[0].type !== "GET") {
    arguments[0].contentType = "application/json";
    if (arguments[0].data) {
      if (typeof arguments[0].data === "string") {
        data = JSON.parse(arguments[0].data);
      } else {
        data = arguments[0].data;
      }
    }
    data["_csrf"] = Backbone.CSRFToken;
    arguments[0].data = JSON.stringify(data);
  }
  return Backbone.$.ajax.apply(Backbone.$, arguments);
}