WC_Widget_Layered_Nav::layered_nav_list() │ protected │ WC 1.0

Show list based layered nav.

Method of the class: WC_Widget_Layered_Nav{}

Hooks from the method

Return

true|false. Will nav display?

Usage

// protected - for code of main (parent) or child class
$result = $this->layered_nav_list( $terms, $taxonomy, $query_type );
$terms(array) (required)
Terms.
$taxonomy(string) (required)
Taxonomy.
$query_type(string) (required)
Query Type.

WC_Widget_Layered_Nav::layered_nav_list() code WC 9.4.2

woocommerce/includes/widgets/class-wc-widget-layered-nav.php 
protected function layered_nav_list( $terms, $taxonomy, $query_type ) {
	// List display.
	echo '<ul class="woocommerce-widget-layered-nav-list">';

	$term_counts        = $this->get_filtered_term_product_counts( wp_list_pluck( $terms, 'term_id' ), $taxonomy, $query_type );
	$_chosen_attributes = WC_Query::get_layered_nav_chosen_attributes();
	$found              = false;
	$base_link          = $this->get_current_page_url();

	foreach ( $terms as $term ) {
		$current_values = isset( $_chosen_attributes[ $taxonomy ]['terms'] ) ? $_chosen_attributes[ $taxonomy ]['terms'] : array();
		$option_is_set  = in_array( $term->slug, $current_values, true );
		$count          = isset( $term_counts[ $term->term_id ] ) ? $term_counts[ $term->term_id ] : 0;

		// Skip the term for the current archive.
		if ( $this->get_current_term_id() === $term->term_id ) {
			continue;
		}

		// Only show options with count > 0.
		if ( 0 < $count ) {
			$found = true;
		} elseif ( 0 === $count && ! $option_is_set ) {
			continue;
		}

		$filter_name = 'filter_' . wc_attribute_taxonomy_slug( $taxonomy );
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended
		$current_filter = isset( $_GET[ $filter_name ] ) ? explode( ',', wc_clean( wp_unslash( $_GET[ $filter_name ] ) ) ) : array();
		$current_filter = array_map( 'sanitize_title', $current_filter );

		if ( ! in_array( $term->slug, $current_filter, true ) ) {
			$current_filter[] = $term->slug;
		}

		$link = remove_query_arg( $filter_name, $base_link );

		// Add current filters to URL.
		foreach ( $current_filter as $key => $value ) {
			// Exclude query arg for current term archive term.
			if ( $value === $this->get_current_term_slug() ) {
				unset( $current_filter[ $key ] );
			}

			// Exclude self so filter can be unset on click.
			if ( $option_is_set && $value === $term->slug ) {
				unset( $current_filter[ $key ] );
			}
		}

		if ( ! empty( $current_filter ) ) {
			asort( $current_filter );
			$link = add_query_arg( $filter_name, implode( ',', $current_filter ), $link );

			// Add Query type Arg to URL.
			if ( 'or' === $query_type && ! ( 1 === count( $current_filter ) && $option_is_set ) ) {
				$link = add_query_arg( 'query_type_' . wc_attribute_taxonomy_slug( $taxonomy ), 'or', $link );
			}
			$link = str_replace( '%2C', ',', $link );
		}

		if ( $count > 0 || $option_is_set ) {
			$link      = apply_filters( 'woocommerce_layered_nav_link', $link, $term, $taxonomy );
			$term_html = '<a rel="nofollow" href="' . esc_url( $link ) . '">' . esc_html( $term->name ) . '</a>';
		} else {
			$link      = false;
			$term_html = '<span>' . esc_html( $term->name ) . '</span>';
		}

		$term_html .= ' ' . apply_filters( 'woocommerce_layered_nav_count', '<span class="count">(' . absint( $count ) . ')</span>', $count, $term );

		echo '<li class="woocommerce-widget-layered-nav-list__item wc-layered-nav-term ' . ( $option_is_set ? 'woocommerce-widget-layered-nav-list__item--chosen chosen' : '' ) . '">';
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended, WordPress.Security.EscapeOutput.OutputNotEscaped
		echo apply_filters( 'woocommerce_layered_nav_term_html', $term_html, $term, $link, $count );
		echo '</li>';
	}

	echo '</ul>';

	return $found;
}