I use a view to display a list of books sorted by title. The view has a context filter to limit the list by subject. So a link to the view could be
/ books by title / 34 where 34 is the id taxonomy term for "self-help". The result is a list of self-help books in the order of titles. Works very well.
The user may also want to display the same books in order of popularity. I therefore included a menu block in the header of the view, one of the choices being "By popularity". The menu link must be
/ books-by-popularity / 34.
How to pass the term id of the URL in the menu link?
Looks like it should be easy, but after reading a dozen articles and tried several approaches, no success.