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adding function to Page_Controller from module

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6 Posts   3073 Views


Community Member, 89 Posts

22 November 2008 at 11:08am

Edited: 22/11/2008 11:09am


is it possible to add a function to Page_Controller when installing a module? - if yes, how?
i mean, without manipulating the Page_Controller itself...

after installing the module, i want to be able to call this function from every page type that extends page...



Community Member, 400 Posts

22 November 2008 at 2:33pm

add your functions to the relevant page's Controllor.

then you can have it.


Community Member, 244 Posts

22 November 2008 at 3:04pm

Edited: 22/11/2008 3:04pm

Nivanka, I think you misunderstood the question:

You can add extra methods to any SilverStripe class (one that extends Object) with the use of Extensions. To this, all you need to do is create a class like this:

 * Adds an extra method to a controlller
class ControllerExtension extends Extension {
	public function extra_method() {
		return 'It Works!';

You then apply this extension to your class using this in your modules _config.php file:

Object::add_extension('Page_Controller', 'ControllerExtension');

For more information, see - note that DataObjectDecorator is a subclass of Extensions designed for applying to DataObject's


Community Member, 89 Posts

25 November 2008 at 6:32am

thanks a lot ajshort, nivanka.

i was looking for the method ajshort described. thanks!


Community Member, 89 Posts

25 November 2008 at 9:48am

Edited: 25/11/2008 9:52am


the tip with the decorator was just what i was looking for.
execpt, it doesn't work... :(

decorating the page controller went fine.

but when i wanted to decorate the page data object, i run into errors.

here's my PageDecorator class:

class PageDecorator extends DataObjectDecorator {
	function extraDBFields() {
		return array(
			'has_many' => array(
				'FlashObjects' => 'FlashDataObject'


this code i have in the _config.php:

Object::add_extension('Page_Controller', 'PageControllerExtension'); 
DataObject::add_extension('Page', array_push(Page::$extensions, 'PageDecorator'));

and this errors i get, when i try to db/build?flush=1 my page:
Parse error: syntax error, unexpected T_LNUMBER, expecting T_STRING or T_VARIABLE or '$' in D:\_projekte\xtreme-diving\silverstripe\sapphire\core\Object.php(86) : eval()'d code on line 1

Fatal error: Call to a member function setOwner() on a non-object in D:\_projekte\xtreme-diving\silverstripe\sapphire\core\Object.php on line 87

could you help me out with this?


edit: in Page.php i added: static $has_many = array();


Community Member, 89 Posts

25 November 2008 at 11:22am

Edited: 25/11/2008 11:29am


i got rid of that error writing:

DataObject::add_extension('Page', 'PageDecorator'); 

in the _config.php instead.

it should work now. but after adding a new has_many relation and reloading, i get en error that is, i think, related to the ticket: