Ceon URI Mapping V5.0

[neekfenwick]

I'm setting up Zen Cart 1.5.8 (recently released) which is not supported by this module yet, but thought I'd report on something and see what the feedback is. It seems between 1.5.7 and 1.5.8 a new constant TOPMOST_CATEGORY_PARENT_ID was introduced, used in zen_get_parent_categories() in functions_categories.php. This is used from this addon during _handleStaticURI -> zen_get_product_path -> zen_get_parent_categories. The problem out of the box is that the constant is not defined because the Ceon autoload breakpoint for CeonURIMappingHandler instantiation is 95, but this symbol won't be defined until init_category_path at breakpoint 160.

Trying to work around by moving CeonURIMappingHandler instantiation to 161 fails because init_sanitize at breakpoint 96 sets $_GET['main_page'] to 'index' which then screws up its detection of index page navigation and causes an infinite redirect loop.

A dirty hack is to set this missing constant in the CeonURIMappingHandler constructor:

	public function __construct()
	{
		if (!defined('TOPMOST_CATEGORY_PARENT_ID')) {
			define('TOPMOST_CATEGORY_PARENT_ID', 0);
		}
		parent::__construct();
	}