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General Questions

General questions about getting started with SilverStripe that don't fit in any of the categories above.

Moderators: martimiz, Sean, biapar, Willr, Ingo, swaiba, simon_w

Decorating doesn't work (in any case)


3 Posts   500 Views


13 March 2012 at 4:20am (Last edited: 13 March 2012 4:21am), Community Member, 56 Posts


I am trying to get the decorating thing for Memberclass working. Unfortunately, how hard I try (following literally the examples on the silverstripe website), it isn't working, I get an error when running de/build/:

Fatal error: Object::add_extension() - Extension "CommissionDescription" is not a subclass of Extension in C:\[path]\sapphire\core\Object.php on line 530

Currently I am using silverstripe 2.4.5.

I use for CommissionDescription:

class CommissionDescription extends DataObjectDecorator {
// some thing like extraStatics in here

and in the mysite/_config.php file:

Object::add_extension('Member', 'CommissionDescription');

Does this give some of you any clue on what might be going on?

Thanks in advance,


13 March 2012 at 4:51am Forum Moderator, 1796 Posts


You have the right syntax, however what can happen is that if the object hasn't been built yet then the stuff in the _config.php will fail.

So comment the stuff in the _config.php, dev/build, then un comment and dev/build again. Hopefully that will fix it.


16 March 2012 at 4:31am Community Member, 56 Posts

Jep, that just fixed it for me, thanks! Now I can finally use the decoration functions!