ruby on rails - Change resources path -


i'm using rails 4

i have routes.rb file looks like:

resources :books

however, i'd urls in application end looking /b/101 instead of /books/101.

i realize go through , rename each resource path individually, there not way changing resources somehow? kind of how can change params doing resources :books, params: :new_id?

here can 

resources :books, path: 'b'

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