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Add transient caching to get_filtered_term_product_counts to reduce large queries

This commit is contained in:
Mike Jolley 2017-06-16 13:35:31 +01:00
parent 8ed149915d
commit 67d13874ab
1 changed files with 14 additions and 2 deletions
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16
includes/widgets/class-wc-widget-layered-nav.php
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@ -335,6 +335,8 @@ class WC_Widget_Layered_Nav extends WC_Widget {
/**
* Count products within certain terms, taking the main WP query into consideration.
*
* This query allows counts to be generated based on the viewed products, not all products.
*
* @param array $term_ids
* @param string $taxonomy
* @param string $query_type
@ -383,9 +385,19 @@ class WC_Widget_Layered_Nav extends WC_Widget {
$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' );
// We have a query - let's see if cached results of this query already exist.
$query_hash = md5( $query );
$cached_counts = (array) get_transient( 'wc_layered_nav_counts' );
if ( ! isset( $cached_counts[ $query_hash ] ) ) {
$results = $wpdb->get_results( $query, ARRAY_A );
$counts = array_map( 'absint', wp_list_pluck( $results, 'term_count', 'term_count_id' ) );
$cached_counts[ $query_hash ] = $counts;
set_transient( 'wc_layered_nav_counts', $cached_counts, DAY_IN_SECONDS );
}
return array_map( 'absint', (array) $cached_counts[ $query_hash ] );
}
/**