Even with the print book the links can be helpful.
(Faux-REST) build your own URL:
The missing piece is that code listing urls for this book all have a path root of
https://media.pragprog.com/titles/phoenix14/code/
The title of the code listing on page 47 is
controllers_views_templates/listings/rumbl/lib/rumbl/accounts.ex
Combine both to get:
Note the phoenix14 in the book’s storefront URL:
https://pragprog.com/book/phoenix14/programming-phoenix-1-4
With Real-time Phoenix (Pragprog) the root is:
https://media.pragprog.com/titles/sbsockets/code/
and a listing title is
hello_sockets/lib/hello_sockets_web/channels/ping_channel.ex
so
Note the sbsockets in the book’s storefront URL:
https://pragprog.com/book/sbsockets/real-time-phoenix
So the code listing URL path template is
https://media.pragprog.com/titles/{book_id}/code/{listing_title}
