title: Openerp NotImplementedError: Iteration is not allowed on browse_record(stock.move, 159275)
body: <p>I'm browsing for records, then I would like to perform specific code if browsing return results.</p>
  
  <p>Here is my code : </p>
  
  <pre><code> def create_update_date(self, cr, uid, ids, context=None):
          _log.info ('this is method to create a MO')
          _log.info (context)
          picking_obj = self.pool.get('stock.picking')
          move_obj = self.pool.get('stock.move')
          for stock in self.browse(cr, uid, ids, context=None):
              for  wiz in picking_obj.browse(cr, uid, stock.stock_id.id, context=None):
                  date_pick = stock.date
                  for wizs in wiz.move_lines:
                      move_obj.write(cr,uid,wizs,{'date_expected':date_pick})
  </code></pre>
  
  <p>But it does not work, when evaluating the if condition, an exception is raised : </p>
  
  <pre><code>NotImplementedError: Iteration is not allowed on browse_record(stock.move, 159275)
  </code></pre>