title: ExtJs 4.2.1 get data after model has been load
body: <p>I have Model</p>
  
  <pre><code>Ext.define('app.model.MyM', {
  
      extend: 'Ext.data.Model',
  
      fields: [
          {name: 'test'}
      ]
  
      proxy: {
          type: 'rest',
          url: 'getdataHere'
      }
  
  });
  </code></pre>
  
  <p>After I get my data loaded in a Model in a controller.</p>
  
  <pre><code>var m = this.getModel('MyM');
  m.load(pId, {callback: function(){//do something}});
  </code></pre>
  
  <p>Later on I am trying to get loaded model data again but can not succeed,</p>
  
  <pre><code>Ext.ModelManager.getModel('MyM').getData() - an error - constructor.... does not have method getdata
  this.getModel('MyM').getData() - the same error
  </code></pre>
  
  <p>Any ideas why? How do I get model data?</p>
  
  <p>This is an error</p>
  
  <pre><code>Uncaught TypeError: Object function constructor() {
              // Opera has some problems returning from a constructor when Dragonfly isn't running. The || null seems to
              // be sufficient to stop it misbehaving. Known to be required against 10.53, 11.51 and 11.61.
              return this.constructor.apply(this, arguments) || null;
          } has no method 'getData' 
  </code></pre>