WooCommerce: Get Variation IDs By Product Category or Tag

We can get products belonging to a product category or product tag very easily. What’s much more difficult is getting single variations based on a product category or product tag, as variations… don’t have a category or tag, which belong to its “parent” variable product instead.

In this post, we will define a function that you can reuse in your custom code whenever you need to get all variation IDs based on a given product category or product tag. You can then loop through the array and return whatever info you need. Enjoy!

PHP Snippet: Retrieve List of Variations By Product Category or Tag

/**
 * @snippet       Get Variation IDs By Taxonomy Term
 * @how-to        Get CustomizeWoo.com FREE
 * @author        Rodolfo Melogli
 * @compatible    WooCommerce 7
 * @community     https://businessbloomer.com/club/
 */

function get_variations_from_term( $term, $taxonomy, $type ) {
    global $wpdb;
    $ids = $wpdb->get_col( "
        SELECT DISTINCT p.ID
        FROM {$wpdb->prefix}posts as p
        INNER JOIN {$wpdb->prefix}term_relationships as tr ON ( p.ID = tr.object_id OR p.post_parent = tr.object_id )
        INNER JOIN {$wpdb->prefix}term_taxonomy as tt ON tr.term_taxonomy_id = tt.term_taxonomy_id
        INNER JOIN {$wpdb->prefix}terms as t ON tt.term_id = t.term_id
        WHERE p.post_type = 'product_variation'
        AND p.post_status = 'publish'
        AND p.ID NOT IN (
			SELECT DISTINCT post_parent
			FROM {$wpdb->prefix}posts
			WHERE post_type = 'product_variation'
			AND post_status = 'publish'
		)
        AND tt.taxonomy = '$taxonomy'
        AND t.$type = '$term'
    " );
	return $ids;
}

You can then use the following in order to get the variation IDs by category or tag:

// BY PRODUCT CATEGORY
get_variations_from_term( 'chairs', 'product_cat', 'slug' );
get_variations_from_term( 59, 'product_cat', 'term_id' );
// ETC

// BY PRODUCT TAG
get_variations_from_term( 'shiny', 'product_tag', 'slug' );
get_variations_from_term( 'Super heavy', 'product_tag', 'name' );
// ETC

Where to add custom code?

You should place custom PHP in functions.php and custom CSS in style.css of your child theme: where to place WooCommerce customization?

This code still works, unless you report otherwise. To exclude conflicts, temporarily switch to the Storefront theme, disable all plugins except WooCommerce, and test the snippet again: WooCommerce troubleshooting 101

Related content

  • WooCommerce: Exclude Category from ‘product_categories’ Shortcode
    Sometimes solutions are very simple, and you don’t need rocket science to fix your issue! A client of mine needed to hide a category from the Product Categories Shortcode ( BloomerArmada (1) WooCommerce Mini-Plugins (27) ); in fact, there is no parameter that allows you to “exclude” a given product category such as “uncategorized” or […]
  • WooCommerce: Hide Products From Specific Category @ Shop
    A very handy snippet. Sometimes, you only want to show certain categories on the shop page, and have those products ONLY show under the category archive instead.
  • WooCommerce: Display Product Categories @ Cart & Checkout Pages
    While working for a freelance client I had to “detect” the cart item categories in order to apply some PHP customization. So I thought – why not share with you how to display product categories in the Cart and Checkout? This adds a nice touch to those two vital pages, and prints a list of […]
  • WooCommerce: “Sale” Category (Automatic)
    You can use a shortcode or block in order to display the WooCommerce products on sale. However, what if you wanted a proper “product category” called “Sale” – and where you didn’t need to manually assign this category to each product? Basically, how do we display all the discounted products in a custom category called […]
  • WooCommerce: Edit “Add to Cart” Text by Product Category
    Today we take a look at the WooCommerce “Add to Cart” buttons. What if you wanted to change the “Add to Cart” text depending on the Product Category? For example, you may want to show “Buy Now” for books and “Add to Basket” for cds.

Rodolfo Melogli

Business Bloomer Founder

Author, WooCommerce expert and WordCamp speaker, Rodolfo has worked as an independent WooCommerce freelancer since 2011. His goal is to help entrepreneurs and developers overcome their WooCommerce nightmares. Rodolfo loves travelling, chasing tennis & soccer balls and, of course, wood fired oven pizza. Follow @rmelogli

Questions? Feedback? Customization? Leave your comment now!
_____

If you are writing code, please wrap it like so: [php]code_here[/php]. Failure to complying with this, as well as going off topic or not using the English language will result in comment disapproval. You should expect a reply in about 2 weeks - this is a popular blog but I need to get paid work done first. Please consider joining the Business Bloomer Club to get quick WooCommerce support. Thank you!

Your email address will not be published. Required fields are marked *