BUG: Incompatibility with WooCommerce Brands

[slaxxarn]

Describe the bug
When filtering on category pages with WooCommerce brands layered nav widget, nothing is shown because elasticpress adds a second tax query with field = slug and operator = and / or. While woocommerce brand adds/uses term_id as field and IN as operator.

The issue is in Facet.php and row 326 - 333. You add a tax query with field = slug and operator = AND / OR

foreach ( $selected_filters['taxonomies'] as $taxonomy => $filter ) {
	$tax_query[] = [
		'taxonomy' => isset( $attribute_taxonomies[ $taxonomy ] ) ? $attribute_taxonomies[ $taxonomy ] : $taxonomy,
		'field'    => 'slug',
		'terms'    => array_keys( $filter['terms'] ),
		'operator' => ( 'any' === $settings['match_type'] ) ? 'or' : 'and',
	];
}

Steps to Reproduce

1. Add a brand
2. Add products to the newly added brand
3. Add the woocommerce brand layered nav widget in sidebar
4. Go to the category page and filter
5. Nothing is shown

Expected behavior
Don't add another tax query if a tax query for the same taxonomy already exists.

[felipeelia]

Related to #2129

[oscarssanchez]

Hi @slaxxarn ,

Would you mind providing if possible a copy of the plugin (if you can email that to the address in my profile that would be great) and a screenshare to check the difference with and without ElasticPress enabled?

I'm using version 1.6.24 of the plugin (as this is a paid plugin, we don't have access to more recent code) and really cannot use the legacy widget at all even with ElasticPress disabled. Thanks!

[slaxxarn]

Hi @oscarssanchez,

We're using version 1.6.14 of the plugin. But widgets filtering by IN operator should not work if elasticpress is enabled, as you add a seperate tax query with AND or OR.

As I stated previously, could you not just check if a query for the taxonomy already exist before adding another one?

Will look into and test some other variations tomorrow, don't really have the time right not. Will get back in this issues after som testing.

[oscarssanchez]

Closing per #2560