Rails - Apr 2010 - How to automatically set params based on passed object when generating a route?

Hi,

having i.e. a post model that has many categories - is it possible for
member routes like i.e. post_path(post) to generate path like "/
posts/:post_category_name/:post_id" without manually passing the
category param? Does anyone know if there''s a gem or if I can simply
override the post_url method to automatically set category from post
object?

The best I could get right now is post_path(post.category, post), but
while it doesn''t look awful it still breaks all links in my app where
most of the time I generate links using link_to(post.title, post).

Cheers,
Szymon

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