Post Types & Taxonomies

StoreEngine keeps a deliberately small set of custom post types. Only content that benefits from the WordPress editing experience — products and coupons — is stored as posts. Orders and subscriptions are table-backed and are not post types (see Database Schema).

Post types and core taxonomies are registered in includes/database.php. Their identifiers are exposed as constants on StoreEngine\Utils\Helper (includes/utils/helper.php) — always reference the constant rather than hardcoding the string.

Custom post types

Post type	Helper constant	Purpose	Registered by
storeengine_product	Helper::PRODUCT_POST_TYPE	Products. Each product owns one or more prices/plans (see Products).	includes/database.php
storeengine_coupon	Helper::COUPON_POST_TYPE	Discount coupons. Wrapped by the Coupon object (see Coupons).	includes/database.php

Orders and subscriptions are not post types

Both live in the wp_storeengine_orders table, discriminated by a type column. Load them with the Order and Subscription objects, not get_post().

Product taxonomies

These taxonomies are attached to the storeengine_product post type:

Taxonomy	Purpose
storeengine_product_category	Hierarchical product categories.
storeengine_product_tag	Flat product tags.
storeengine_product_attribute	Base attribute taxonomy for product attributes.

Global (store-wide) attributes

Global attributes are defined in the storeengine_attribute_taxonomies table and registered as taxonomies dynamically at runtime. The taxonomy name for a given attribute is derived through the helper:

use StoreEngine\Utils\Helper;

$taxonomy = Helper::get_attribute_taxonomy_name( 'color' );
$terms    = get_terms( [ 'taxonomy' => $taxonomy, 'hide_empty' => false ] );

Because these taxonomies are created from stored definitions, the exact set depends on how the store is configured.

Addon-registered types

Some post types and taxonomies exist only when the relevant addon is active:

Type	Kind	Addon	Purpose
storeengine_membership	Post type	Membership	Access Groups.
storeengine_webhook	Post type	Webhooks	Outgoing webhook definitions.
storeengine_in_hook	Post type	Webhooks	Incoming webhook receivers.
storeengine_product_brand	Taxonomy	Brand	Product brands.

Querying products

Because products are a CPT, standard WP_Query works:

use StoreEngine\Utils\Helper;

$query = new WP_Query( [
	'post_type'      => Helper::PRODUCT_POST_TYPE,
	'posts_per_page' => 12,
	'post_status'    => 'publish',
	'tax_query'      => [
		[
			'taxonomy' => 'storeengine_product_category',
			'field'    => 'slug',
			'terms'    => 'apparel',
		],
	],
] );

To turn a product post id into a rich product object with prices, stock, and attributes, use the factory rather than working with the raw WP_Post:

$product = Helper::get_product( get_the_ID() ); // AbstractProduct|false
if ( $product ) {
	echo esc_html( $product->get_name() );
	foreach ( $product->get_prices() as $price ) {
		// $price is a Price object; $price->get_id() is the price_id
	}
}

See Products for the full object API.

See also

• Database Schema — where table-backed data lives.
• Products and Coupons — the objects over these CPTs.
• REST API › Products — querying products over HTTP.