I'm trying to alter the defaults in the Image gallery page (ie the album width, height, etc). I would like to do so in the config file so that I can upgrade to future versions easily. I believe I can do this through a DataObjectDecorator, but I'm lost on the exact way to do so, and have found little to no documentation. Here is my code this far...

ImageGalleryDecorator

class ImageGalleryDecorator extends DataObjectDecorator {
  	static $defaults = array (
		'CoverImageWidth' => '140',
		'CoverImageHeight' => '140'
	);
}

_config.php

DataObject::add_extension("ImageGalleryPage","ImageGalleryDecorator");

Could something like this work? Does anyone have any ideas, or can point me in the right direction? Thanks in advance.

You don't need a decorator for that.

_config.php

singleton("ImageGalleryPage")->set_stat('defaults',array(
// etc...
));

If you were to use a decorator, though, you would use:

function extraStatics() {
return array (
'defaults' => array(
// etc..
);
)
}

Ah, that worked, thanks!