text: Ext.define('AM.model.User', {
      extend: 'Ext.data.Model',
      fields: ['id', 'firstname', 'lastname', 'email'],
  
      getFullName : function() {
          return this.get('firstname') + ' ' + this.get('lastname');
      },
  
      validateEmail : function() {
          return this.get('email');
      }
  });
  