Modifying Feed and Entry structures | Zend_Feed Programmer's Reference Guide | Zend_Feed_Reader

# 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

1. /**
2. * The custom entry class automatically knows the feed URI (optional) and
3. * can automatically add extra namespaces.
4. */
5. class MyEntry extends Zend_Feed_Entry_Atom
6. {
8. public function __construct($uri = 'http://www.example.com/myfeed/',
9. $xml = null)
10. {
11. parent::__construct($uri, $xml);
13. Zend_Feed::registerNamespace('myns',
14. 'http://www.example.com/myns/1.0');
15. }
17. public function __get($var)
18. {
19. switch ($var) {
20. case 'myUpdated':
21. // Translate myUpdated to myns:updated.
22. return parent::__get('myns:updated');
24. default:
25. return parent::__get($var);
26. }
27. }
29. public function __set($var, $value)
30. {
31. switch ($var) {
32. case 'myUpdated':
33. // Translate myUpdated to myns:updated.
34. parent::__set('myns:updated', $value);
35. break;
37. default:
38. parent::__set($var, $value);
39. }
40. }
42. public function __call($var, $unused)
43. {
44. switch ($var) {
45. case 'myUpdated':
46. // Translate myUpdated to myns:updated.
47. return parent::__call('myns:updated', $unused);
49. default:
50. return parent::__call($var, $unused);
51. }
52. }
53. }

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

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

Modifying Feed and Entry structures | Zend_Feed Programmer's Reference Guide | Zend_Feed_Reader