[Dbix-class] Multi table join

[Jon Molin]

In the DBIx::Class::Manual::Cookbook there's an example with an author/book
seems like the database is somewhat like this:

author
authID int
first_name varchar
last_name varchar

book2author
authID int
bookID int

book
bookID int
title  varchar
...


Now, if I know the title starts with foo% but want to limit my result to
authors bar% I'd go like this in sql:

SELECT a.*, b.* FROM book b, author a, book2author a2b
  WHERE (b.title LIKE 'foo%' AND a.first_name LIKE 'bar%') AND
        (b.bookID = a2b.bookID AND a.authID = a2b.authID

I've two questions regarding this. First, how to do it? I can't find much
documentation and in the doc I've found haven't I found a way to do a multi
table join. Secondly where would be a sane place to put a function like
this? Would Book2Author.pm be the correct place since it's the table
connecting them?
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