Docs/Integrations/Taxonomies

Taxonomies

Register and manage custom taxonomies from Pure Fields → Taxonomies — hierarchical (category-style) or flat (tag-style), attached to any post type.

Like Post Types, taxonomy registration is visual-only: Pure Fields stores your configuration and calls WordPress's own register_taxonomy() with it on init. Attach a taxonomy to a built-in post type (post) or to a custom post type you've registered in the same Post Types screen.

Reading and querying terms

Once registered, a Pure Fields taxonomy behaves exactly like any WordPress taxonomy — use the standard functions against it:

PHP

// List terms attached to the current post.
$terms = get_the_terms( get_the_ID(), 'project_category' );

// Query posts by term.
$query = new WP_Query( [
    'post_type' => 'project',
    'tax_query' => [ [
        'taxonomy' => 'project_category',
        'field'    => 'slug',
        'terms'    => 'branding',
    ] ],
] );

Combine with a post_select field

The post_select field type (Select2) can target a specific post type, which is handy when a metabox or option field needs to link to one item of a custom post type rather than filtering by taxonomy term.