title: JSON child object with dojo/data/ObjectStore
body: <p>Given the following JSON data:</p>
  
  <pre><code>[
  {
      "pk": 2, 
      "model": "corkboard.announcement", 
      "fields": {
          "body": "Test announcement 2 body.", 
          "date": "2012-04-10T00:59:12Z", 
          "title": "Test Announcement 2"
      }
  }, 
  {
      "pk": 1, 
      "model": "corkboard.announcement", 
      "fields": {
          "body": "Test Announcement 1 body.", 
          "date": "2012-04-10T00:58:56Z", 
          "title": "Test Announcement 1"
      }
  }
  ]
  </code></pre>
  
  <p>I'm creating a dojox/DataGrid but I can't seem to find a way to access "fields" children.</p>
  
  <p>Here is the javascript:</p>
  
  <pre><code>&lt;script&gt;
          var announcementStore, dataStore, grid;
          require(["dojo/store/JsonRest", "dojo/store/Memory", "dojo/store/Cache", "dojox/grid/DataGrid", "dojo/data/ObjectStore", "dojo/query", "dojo/domReady!"], 
              function(JsonRest, Memory, Cache, DataGrid, ObjectStore, query){
              announcementStore = Cache(JsonRest({target:"/corkboard/announcements/"}), Memory());
              grid = new DataGrid({
                  store: dataStore = ObjectStore({objectStore: announcementStore}),
                  structure: [
                      {name:"Title", field:"title", width: "200px"},
                      {name:"Body", field:"body", width: "200px", editable: true}
                  ]
              }, "target-node-id");
              grid.startup();
              query("#save").onclick(function(){
                  dataStore.save();
              });
          });
  &lt;/script&gt;
  </code></pre>
  
  <p>I tried using fields.title and fields.body when defining the field, but that didn't work.</p>
  
  <p>In this example, how would I access "fields" children?</p>