How to Create a Custom URL Structure for Two Post Types in WordPress?

• johndoe43256

• November 16, 2024 at 6:11 pm

Post Types:

• Book
• Chapter

Desired URL Structure:
I’d like to display the chapter post type under the book post type in the following structure:

• Domain.com/book/jack-and-the-beanstalk/chapter/1
• Domain.com/book/jack-and-the-beanstalk/chapter/intro

What I’ve Tried:

• Post Type Relationship:
  I created a relationship between the book and chapter post types using ACF. I added a rewrite rule in my theme to achieve the desired URL structure.
  Result: The rewrite rule didn’t work as expected.
• Using Taxonomies:
  Since WordPress supports taxonomies in URLs, I tried the following:
  • Ensured each chapter was assigned a taxonomy corresponding to a book.
  • Created a script to automatically add a taxonomy for each book with a slug matching the book’s slug.

  Result: The URL didn’t return a 404 error, but it didn’t resolve to the chapter page. Instead, it redirected to the book page. For example:

  • Domain.com/book/jack-and-the-beanstalk/chapter/1 displayed the book page instead of the chapter page.

The Problem:
How can I correctly set up this URL structure using ACF to:

• Link books and chapters.
• Ensure chapters appear under their respective books in the URL.

Any guidance or example code would be greatly appreciated!