CPT Taxonomy archive

5

This is the order in which WordPress checks for your template files, taken directly from Development using Roots

Custom Taxonomies

  1. taxonomy-(taxomony)-(term).php (if doesn’t exist, falls back to…)
  2. taxonomy-(taxomony).php (if doesn’t exist, falls back to…)
  3. taxonomy.php (if doesn’t exist, falls back to…)
    4.* archive.php (if doesn’t exist, falls back to…)*
  4. index.php

So, if you have a custom taxonomy called foo_categories and one of your a custom categories is called bar, its archive template file would need to be taxonomy-foo_categories-bar.php. If you want all your custom Foo categories to use the same template you would just create one template file called taxonomy-foo_categories.php.

Note that these should be in the root of the theme directory, NOT in the templates directory!