Canonical URLs
From Adult Web Scripts Wiki
The canonical URL should be the url that matched the current url config rule - minus any spurious query args that might be appended:
- {$URL.urlconfig_name} is the current rule name
- {$URL.args} are the current attributes decoded from the url
so we re-encode the url using {url_encode} using the special arg _args to pass an array of values:
{url_encode urlconfig_name=$URL.urlconfig_name _args=$URL.args}
So then this should go in the html header:
<link rel="canonical" href="{url_encode urlconfig_name=$URL.urlconfig_name _args=$URL.args} " />
