Setting canonical url for "duplicates"

[GitteOlrik]

At the moment I am using a module names Canonical Url to add canonical tags to those product pages, that are almost duplicates (e.g. same teapot in 2 different colors).

There is a builtin function for adding canonical tags, but it always just inserts the url to the current product, making the canonical tag from Canonical Url obsolete. Now I have commented out the line in FrontController that adds the canonical tag and now my SEO tools are happy :) But is there a way to add the canonical tag for "duplicates" within Thirty bees or another workaround so I don't have to modify core code :)

[elund]

Hej Gitte

Is it the Canonical URLs module from Linea Grafica that you are using, because I am considering buying it?
Are you still using it? If yes, do you still need to modify core code? And are you satisfied with the module?

Best regards,
Elund
www.prospeed.dk

Edited December 23, 2019 by elund