CHAPTER 14Working with Taxonomy

Taxonomy is the classification of things. Drupal comes with a taxonomy module that allows you to classify nodes (which are, essentially, "things"). In this chapter, you'll look at the different kinds of taxonomies Drupal supports. You'll also see how the data is stored and how to write queries against the taxonomy database tables for incorporation into your own modules. Finally, you'll see how your modules can be notified of changes to taxonomies, and we'll go over some common taxonomy-related tasks.

What Is Taxonomy?

Taxonomy involves putting things into categories. You'll find Drupal's taxonomy support under Administer Content Management Taxonomy (if it doesn't appear there, make sure the taxonomy module is ...

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