A great feature of WordPress is the ability for site editors to quickly make changes to any post in the admin section by clicking on the Quick Edit link associated with any of the items shown. While our custom post type taxonomy appears in the Quick Edit section, it is not a drop-down list of choices as we had in the book review editor. Also, the author and rating fields do not appear in any way in the Quick Edit section.
This recipe shows how to add custom fields while quickly editing book reviews. As you perform the following steps, you will see that some of the code that we put in place is not as cleanly written as code from previous recipes, since the WordPress Quick Edit customization infrastructure is not as well-formed as other areas of the platform.