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Custom Feed and Entry Classes - Zend_Feed

Custom Feed and Entry Classes

Finally, you can extend the Zend_Feed classes if you'd like to provide your own format or niceties like automatic handling of elements that should go into a custom namespace.

Here is an example of a custom Atom entry class that handles its own myns: namespace entries. Note that it also makes the registerNamespace() call for you, so the end user doesn't need to worry about namespaces at all.

Example #1 Extending the Atom Entry Class with Custom Namespaces

/**
 * The custom entry class automatically knows the feed URI (optional) and
 * can automatically add extra namespaces.
 */
class MyEntry extends Zend_Feed_Entry_Atom
{
 
    public function __construct($uri = 'http://www.example.com/myfeed/',
                                $xml = null)
    {
        parent::__construct($uri, $xml);
 
        Zend_Feed::registerNamespace('myns',
                                     'http://www.example.com/myns/1.0');
    }
 
    public function __get($var)
    {
        switch ($var) {
            case 'myUpdated':
                // Translate myUpdated to myns:updated.
                return parent::__get('myns:updated');
 
            default:
                return parent::__get($var);
            }
    }
 
    public function __set($var, $value)
    {
        switch ($var) {
            case 'myUpdated':
                // Translate myUpdated to myns:updated.
                parent::__set('myns:updated', $value);
                break;
 
            default:
                parent::__set($var, $value);
        }
    }
 
    public function __call($var, $unused)
    {
        switch ($var) {
            case 'myUpdated':
                // Translate myUpdated to myns:updated.
                return parent::__call('myns:updated', $unused);
 
            default:
                return parent::__call($var, $unused);
        }
    }
}

Then to use this class, you'd just instantiate it directly and set the myUpdated property:

$entry = new MyEntry();
$entry->myUpdated = '2005-04-19T15:30';
 
// method-style call is handled by __call function
$entry->myUpdated();
// property-style call is handled by __get function
$entry->myUpdated;

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