routing - Change Rails namespaced route to personalized params route -

tl;dr: want have username621/posts/title-of-post instead of member/posts/1

the changing of post id post title easy enough since used freindly_id gem generate slugs.

however, having difficulty routing personalized params route instead of current namespaced route. here current routing:

namespace :member     resources :posts end

i want replace member namespace user's username. if username user123, route should user123/posts/title-of-post.

i think not standard rails routing , tried looking similar questions no results.

for more complicated routes.rb, add path option

namespace :member, path: ":user_id"   resources :posts end

then have add friendly_id user , post have become http://localhost:3000/username621/posts/title-of-post

however, you'll need pore through codebase things member_post_path(post) , change member_post_path(post.user, post)

Braziel