tauren

var FindUserCollection = Backbone.Collection.extend({
  model: User,
  baseUrl: "/api/v2/users",
  url: function() {
    return this.baseUrl + '?' + $.param({
      search: this.search,
      limit: this.limit
    });
  }
  search: null,

tauren

var child = new Backbone.Model({name: "child"});
var parent = new Backbone.Model({name: "parent", child: child});
var json = parent.toJson()

This should return:
{
  name: "parent",
  child: {
     name: "child"
  }

tauren

var user = new User({
  id: 1,
  username: "bob",
  address: {
    id: 1,
    street: "232 SW Main"
    city: "",
    state: "",
    zip: ""
  }

tauren

/*
 * REST endpoint: /projects
 */
var projects = [
  {
    "id": 2,
    "name": "Project 1",
    "members": [
      {"id": 1, "name": "Tom", "phone": "555-5555"},
      {"id": 2, "name": "Sue", "phone": "555-5555"}