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This example demonstrates how we might add the field value of myField
to the myForm session namespace:
// get the session
$session =& JFactory::getSession();
// get the raw value of myField
$myFieldValue = JRequest::getString('myField', '', 'POST',
JREQUEST_ALLOWRAW);
// add the value to the session namespace myForm
$session->set('myField', $myFieldValue, 'myForm')
When we come to display the form we can retrieve the data from the session using
the get() method. Once we have retrieved the data we must remember to remove
the data from the session, otherwise it will be displayed every time we view the form
(unless we use another flag as an indicator). We can remove data items from the
myForm namespace using the clear() method:
// get the session
$session =& JFactory::getSession();
// Remove the myField
$session->clear('myField', 'myForm');
The final thing we do in the No route is to redirect the user back to the input form.
When we do this, we must add some messages to the application queue to explain to
the user why the input has been rejected.


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