Based on WP_Query::parse_search
| public static get_main_search_query_sql ( ) |
/**
* Count products within certain terms, taking the main WP query into consideration.
*
* @param array $term_ids
* @param string $taxonomy
* @param string $query_type
* @return array
*/
protected function get_filtered_term_product_counts($term_ids, $taxonomy, $query_type)
{
global $wpdb;
$tax_query = WC_Query::get_main_tax_query();
$meta_query = WC_Query::get_main_meta_query();
if ('or' === $query_type) {
foreach ($tax_query as $key => $query) {
if (is_array($query) && $taxonomy === $query['taxonomy']) {
unset($tax_query[$key]);
}
}
}
$meta_query = new WP_Meta_Query($meta_query);
$tax_query = new WP_Tax_Query($tax_query);
$meta_query_sql = $meta_query->get_sql('post', $wpdb->posts, 'ID');
$tax_query_sql = $tax_query->get_sql($wpdb->posts, 'ID');
// Generate query
$query = array();
$query['select'] = "SELECT COUNT( DISTINCT {$wpdb->posts}.ID ) as term_count, terms.term_id as term_count_id";
$query['from'] = "FROM {$wpdb->posts}";
$query['join'] = "\n\t\t\tINNER JOIN {$wpdb->term_relationships} AS term_relationships ON {$wpdb->posts}.ID = term_relationships.object_id\n\t\t\tINNER JOIN {$wpdb->term_taxonomy} AS term_taxonomy USING( term_taxonomy_id )\n\t\t\tINNER JOIN {$wpdb->terms} AS terms USING( term_id )\n\t\t\t" . $tax_query_sql['join'] . $meta_query_sql['join'];
$query['where'] = "\n\t\t\tWHERE {$wpdb->posts}.post_type IN ( 'product' )\n\t\t\tAND {$wpdb->posts}.post_status = 'publish'\n\t\t\t" . $tax_query_sql['where'] . $meta_query_sql['where'] . "\n\t\t\tAND terms.term_id IN (" . implode(',', array_map('absint', $term_ids)) . ")\n\t\t";
if ($search = WC_Query::get_main_search_query_sql()) {
$query['where'] .= ' AND ' . $search;
}
$query['group_by'] = "GROUP BY terms.term_id";
$query = apply_filters('woocommerce_get_filtered_term_product_counts_query', $query);
$query = implode(' ', $query);
$results = $wpdb->get_results($query);
return wp_list_pluck($results, 'term_count', 'term_count_id');
}
