Rails routing: param option

ActionDispatch::Routing::Mapper::Base | RailsDoc(β)

resources :users, param: :name

GET       /users(.:format)
POST      /users(.:format)
GET       /users/new(.:format)
GET       /users/:name/edit(.:format)
GET       /users/:name(.:format)
PATCH/PUT /users/:name(.:format)
DELETE    /users/:name(.:format)