Pretty links with add_rewrite_rule and add_query_var

There are a couple of issues with your regular expression: ^model_more/(\d*)$ ^— Says “match start of line” In your URLs, the start of the line is actually /model/, so ^model_more will never match. Instead, try a regex like this: ^model/[^/]+/model_more/(\d+)/?$ [^/]+ says “match anything except /, since I would guess there are multiple models under … Read more