title: Backbone.js prints "function String() { [native code] }" instead of model attribute
body: <p>I am new to backbone.js and here is my question.</p>
  
  <p><strong>First I setup routing:</strong></p>
  
  <pre><code>var Router = Backbone.Router.extend({
  
      initialize: function(){
  
        var data = {
          member: new Member.Model({ _id: 'some id' })
        };
  
        _.extend(this, data);
        // Use main layout and set Views.
        app.useLayout("main-layout").setViews({
          ".member": new Member.Views.Start(data)
        }).render();
      },
      routes: {
        "": "index"
      },
      index: function() {
        this.member.fetch();
      }
  });
  </code></pre>
  
  <p>On index route this will simply get the start view and add it to the DOM when an element matches the member class. This works just fine. However inside the template I have:</p>
  
  <pre><code>&lt;%= model.get('username') %&gt;
  </code></pre>
  
  <p><strong>And this prints</strong> </p>
  
  <pre><code>function String() { [native code] }
  </code></pre>
  
  <p><strong>instead of the model attribute.</strong> Here is the model and view class:</p>
  
  <pre><code>var Member = app.module();
  
  Member.Model = Backbone.Model.extend({
      urlRoot: '/Members',
      idAttribute: "_id",
      defaults: {
        _id: null,
        name: String,
        email: String,
        username: String,
        initials: String,
        provider: String,
        provider_id: String,
        confirmed: Boolean,
        provider_avatar: String
      },
      initialize: function(models, options){
  
      }
    });
  
  Member.Views.Start = Backbone.View.extend({
      template: "member/start",
      serialize: function() {
        return { model: this.options.member };
      },        
      initialize: function() {
  
      }
    });
  </code></pre>
  
  <p>For my project I use the backbone boilerplate <a href="https://github.com/backbone-boilerplate/backbone-boilerplate" rel="nofollow">https://github.com/backbone-boilerplate/backbone-boilerplate</a>  Template enging : <a href="https://github.com/backbone-boilerplate/backbone-boilerplate/wiki/Working-with-templates" rel="nofollow">https://github.com/backbone-boilerplate/backbone-boilerplate/wiki/Working-with-templates</a></p>
  
  <p>Why do I get this text instead of the model values, and how to fix this?</p>