Your sub list is exactly the same as it is in the tutorial. After looking over the tutorial and thinking about the error, it looks like the id field for the author is not being passed to the object. There are a few reasons this could happen.

  • It could be because you are typing in the wrong url
    • Here's the right one: http://localhost:3000/books/url_create/TCPIP_Illustrated_Vol-2/5/4
  • It also could be because there is an error in the code I posted above for joining with the author id:
    • # Add a record to the join table for this book, mapping to 
# appropriate author
$book->add_to_book_authors({author_id => $author_id});
# Note: Above is a shortcut for this:
# $book->create_related('book_authors', {author_id => $author_id});
# Assign the Book object to the stash for display in the view
$c->stash->{book} = $book;

    [download]
  • It could be some errors in the DBIx::Class setup from "More Catalyst Basics".
    • If you happen to leave out a line or write an error in your schema files, your queries may not come out correctly.

    -Actualize

    In reply to Re^3: Catalyst: model & context object usage by actualize
    in thread Catalyst: model & context object usage by marscld

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