Cache subscription last order date

changelog.txt

@@ -26,6 +26,7 @@
 * Fix - For stores with HPOS + compatibility mode enabled, using the bulk delete related orders cache tool was not correctly deleting the meta from the WP Posts table.
 * Fix - Prevent empty strings being saved in related orders cache ID meta when backfilling order data to the WP Posts table.
 * Fix - Correctly load product names with HTML on the cart and checkout shipping rates.
+* Fix - Improve performance of the subscription listing page.
 * Dev - Fix Node version mismatch between package.json and .nvmrc (both are now set to v16.17.1).
 * Add - Hooks to add more columns to the Related Orders table on admin
 

includes/admin/class-wcs-admin-post-types.php

@@ -684,9 +684,14 @@ public function render_shop_subscription_columns( $column, $subscription = null
 	 * @since 1.0.0 - Migrated from WooCommerce Subscriptions v2.3.0
 	 */
 	public static function get_date_column_content( $subscription, $column ) {
-		$date_type_map  = array( 'last_payment_date' => 'last_order_date_created' );
-		$date_type      = array_key_exists( $column, $date_type_map ) ? $date_type_map[ $column ] : $column;
-		$date_timestamp = $subscription->get_time( $date_type );
+		$date_type_map = array( 'last_payment_date' => 'last_order_date_created' );
+		$date_type     = array_key_exists( $column, $date_type_map ) ? $date_type_map[ $column ] : $column;
+
+		if ( 'last_payment_date' === $column ) {
+			$date_timestamp = self::get_last_payment_date( $subscription );
+		} else {
+			$date_timestamp = $subscription->get_time( $date_type );
+		}
 
 		if ( 0 === $date_timestamp ) {
 			return '-';
@@ -1834,6 +1839,26 @@ public function orders_table_query_clauses( $pieces, $query, $args ) {
 		return $pieces;
 	}
 
+	/**
+	 * Get the last payment date for a subscription.
+	 *
+	 * @param WC_Subscription $subscription The subscription object.
+	 * @return int The last payment date timestamp.
+	 */
+	private static function get_last_payment_date( $subscription ) {
+		$last_order_date_created = $subscription->get_last_order_date_created();
+
+		if ( ! empty( $last_order_date_created ) ) {
+			return $last_order_date_created;
+		}
+
+		$date_timestamp = $subscription->get_time( 'last_order_date_created' );
+		$subscription->set_last_order_date_created( $date_timestamp );
+		$subscription->save();
+
+		return $date_timestamp;
+	}
+
 	/**
 	 * Adds order table query clauses to sort the subscriptions list table by last payment date.
 	 *

includes/class-wc-subscription.php

@@ -60,6 +60,7 @@ class WC_Subscription extends WC_Order {
 		'requires_manual_renewal' => true,
 		'cancelled_email_sent'    => false,
 		'trial_period'            => '',
+		'last_order_date_created' => null,
 
 		// Extra data that requires manual getting/setting because we don't define getters/setters for it
 		'schedule_trial_end'      => null,
@@ -908,6 +909,15 @@ public function get_cancelled_email_sent( $context = 'view' ) {
 		return $this->get_prop( 'cancelled_email_sent', $context );
 	}
 
+	/**
+	 * The subscription last order created date.
+	 *
+	 * @return string
+	 */
+	public function get_last_order_date_created( $context = 'view' ) {
+		return $this->get_prop( 'last_order_date_created', $context );
+	}
+
 	/*** Setters *****************************************************/
 
 	/**
@@ -1092,15 +1102,23 @@ public function set_cancelled_email_sent( $value ) {
 		$this->set_prop( 'cancelled_email_sent', $value );
 	}
 
+	/**
+	 * Set the subscription last order created date.
+	 */
+	public function set_last_order_date_created( $value ) {
+		$this->set_prop( 'last_order_date_created', $value );
+	}
+
 	/*** Date methods *****************************************************/
 
 	/**
 	 * Get the MySQL formatted date for a specific piece of the subscriptions schedule
 	 *
 	 * @param string $date_type 'date_created', 'trial_end', 'next_payment', 'last_order_date_created' or 'end'
 	 * @param string $timezone The timezone of the $datetime param, either 'gmt' or 'site'. Default 'gmt'.
+	 * @param array $exclude_statuses An array of subscription statuses to exclude from the date calculation.
 	 */
-	public function get_date( $date_type, $timezone = 'gmt' ) {
+	public function get_date( $date_type, $timezone = 'gmt', $exclude_statuses = array() ) {
 
 		$date_type = wcs_normalise_date_type_key( $date_type, true );
 
@@ -1122,13 +1140,13 @@ public function get_date( $date_type, $timezone = 'gmt' ) {
 					$date = $this->get_date_completed();
 					break;
 				case 'last_order_date_created':
-					$date = $this->get_related_orders_date( 'date_created', 'last' );
+					$date = $this->get_related_orders_date( 'date_created', 'last', $exclude_statuses );
 					break;
 				case 'last_order_date_paid':
-					$date = $this->get_related_orders_date( 'date_paid', 'last' );
+					$date = $this->get_related_orders_date( 'date_paid', 'last', $exclude_statuses );
 					break;
 				case 'last_order_date_completed':
-					$date = $this->get_related_orders_date( 'date_completed', 'last' );
+					$date = $this->get_related_orders_date( 'date_completed', 'last', $exclude_statuses );
 					break;
 				default:
 					$date = $this->get_date_prop( $date_type );
@@ -1246,14 +1264,15 @@ public function set_date_completed( $date = null ) {
 	 * @since 1.0.0 - Migrated from WooCommerce Subscriptions v2.2.0
 	 * @param string $date_type Any valid WC 3.0 date property, including 'date_paid', 'date_completed', 'date_created', or 'date_modified'
 	 * @param string $order_type The type of orders to return, can be 'last', 'parent', 'switch', 'renewal' or 'any'. Default 'any'. Use 'last' to only check the last order.
+	 * @param array  $exclude_statuses An array of subscription statuses to exclude from the date calculation.
 	 * @return WC_DateTime|NULL object if the date is set or null if there is no date.
 	 */
-	protected function get_related_orders_date( $date_type, $order_type = 'any' ) {
+	protected function get_related_orders_date( $date_type, $order_type = 'any', $exclude_statuses = array() ) {
 
 		$date = null;
 
 		if ( 'last' === $order_type ) {
-			$last_order = $this->get_last_order( 'all' );
+			$last_order = $this->get_last_order( 'all', [ 'parent', 'renewal' ], $exclude_statuses );
 			$date       = ( ! $last_order ) ? null : wcs_get_objects_property( $last_order, $date_type );
 		} else {
 			// Loop over orders until we find a valid date of this type or run out of related orders
@@ -1353,10 +1372,11 @@ public function format_date_to_display( $timestamp_gmt, $date_type ) {
 	 *
 	 * @param string $date_type 'date_created', 'trial_end', 'next_payment', 'last_order_date_created', 'end' or 'end_of_prepaid_term'
 	 * @param string $timezone The timezone of the $datetime param. Default 'gmt'.
+	 * @param array $exclude_statuses An array of subscription statuses to exclude from the date calculation.
 	 */
-	public function get_time( $date_type, $timezone = 'gmt' ) {
+	public function get_time( $date_type, $timezone = 'gmt', $exclude_statuses = array() ) {
 
-		$datetime = $this->get_date( $date_type, $timezone );
+		$datetime = $this->get_date( $date_type, $timezone, $exclude_statuses );
 		$datetime = wcs_date_to_time( $datetime );
 
 		return $datetime;

includes/class-wc-subscriptions-data-copier.php

@@ -38,6 +38,7 @@ class WC_Subscriptions_Data_Copier {
 		'_suspension_count',
 		'_requires_manual_renewal',
 		'_cancelled_email_sent',
+		'_last_order_date_created',
 		'_trial_period',
 		'_created_via',
 		'_order_stock_reduced',

includes/class-wc-subscriptions-order.php

@@ -77,6 +77,22 @@ public static function init() {
 		add_filter( 'woocommerce_order_query_args', array( __CLASS__, 'map_order_query_args_for_subscriptions' ) );
 
 		add_filter( 'woocommerce_orders_table_query_clauses', [ __CLASS__, 'filter_orders_query_by_parent_orders' ], 10, 2 );
+
+		add_action( 'woocommerce_before_delete_order', [ __CLASS__, 'delete_order_update_order_related_subscriptions_last_order_date_created' ], 10, 2 );
+
+		$cache_manager = new WCS_Object_Data_Cache_Manager(
+			'subscription',
+			[
+				'parent_id',
+			]
+		);
+		$cache_manager->init();
+
+		add_action( 'wcs_update_post_meta_caches', [ __CLASS__, 'update_subscription_last_order_date_parent_id_changes' ], 10, 5 );
+
+		add_action( 'wcs_orders_add_relation', [ __CLASS__, 'add_relation_update_order_related_subscriptions_last_order_date_created' ], 10, 3 );
+
+		add_action( 'wcs_orders_delete_relation', [ __CLASS__, 'delete_relation_update_order_related_subscriptions_last_order_date_created' ], 10, 3 );
 	}
 
 	/*
@@ -2396,6 +2412,97 @@ public static function get_meta( $order, $meta_key, $default = 0 ) {
 		return $meta_value;
 	}
 
+	/**
+	 * Update subscription cached last_order_date_created metadata when deleting a child order.
+	 *
+	 * @param int      $id    The deleted order ID.
+	 * @param WC_Order $order The deleted order object.
+	 */
+	public static function delete_order_update_order_related_subscriptions_last_order_date_created( $id, $order ) {
+		if ( $order->get_created_via() !== 'subscription' ) {
+			return;
+		}
+
+		self::update_order_related_subscriptions_last_order_date_created( $order, [ 'trash' ] );
+	}
+
+	/**
+	 * Update subscription cached last_order_date_created metadata when adding a child order.
+	 *
+	 * @param WC_Order $order         The order to link with the subscription.
+	 * @param WC_Order $subscription  The order or subscription to link the order to.
+	 * @param string   $relation_type The relationship between the subscription and the order. Must be 'renewal', 'switch' or 'resubscribe' unless custom relationships are implemented.
+	 */
+	public static function add_relation_update_order_related_subscriptions_last_order_date_created( $order, $subscription, $relation_type ) {
+		self::update_order_related_subscriptions_last_order_date_created( $order );
+	}
+
+	/**
+	 * Update subscription cached last_order_date_created metadata when deleting a child order relation.
+	 *
+	 * @param WC_Order $order         An order that may be linked with subscriptions.
+	 * @param WC_Order $subscription  A subscription or order to unlink the order with, if a relation exists.
+	 * @param string   $relation_type The relationship between the subscription and the order. Must be 'renewal', 'switch' or 'resubscribe' unless custom relationships are implemented.
+	 */
+	public static function delete_relation_update_order_related_subscriptions_last_order_date_created( $order, $subscription, $relation_type ) {
+		$last_order_date_created = $subscription->get_time( 'last_order_date_created', 'gmt' );
+
+		$subscription->set_last_order_date_created( $last_order_date_created );
+		$subscription->save();
+
+		self::update_order_related_subscriptions_last_order_date_created( $order );
+	}
+
+	/**
+	 * Update all subscription cached last_order_date_created metadata related to the order.
+	 *
+	 * @param WC_Order $order The order object.
+	 * @param array    $exclude_statuses The order statuses to exclude.
+	 */
+	private static function update_order_related_subscriptions_last_order_date_created( $order, $exclude_statuses = [] ) {
+		$subscription_ids = wcs_get_subscription_ids_for_order( $order );
+
+		foreach ( $subscription_ids as $subscription_id ) {
+			$subscription            = wcs_get_subscription( $subscription_id );
+			$last_order_date_created = $subscription->get_time( 'last_order_date_created', 'gmt', $exclude_statuses );
+
+			$subscription->set_last_order_date_created( $last_order_date_created );
+			$subscription->save();
+		}
+	}
+
+	/**
+	 * Update subscription cached last_order_date_created metadata when manually updating parent id.
+	 *
+	 * @param string $type The type of update to check. Only 'add' or 'delete' should be used.
+	 * @param int $object_id The object the meta is being changed on.
+	 * @param string $meta_key The object meta key being changed.
+	 * @param mixed $meta_value The meta value.
+	 * @param mixed $prev_value The previous value stored in the database. Optional.
+	 */
+	public static function update_subscription_last_order_date_parent_id_changes( $type, $object_id, $key, $new_value, $previous_value ) {
+		if ( 'parent_id' !== $key || empty( $previous_value ) || empty( $new_value ) ) {
+			return;
+		}
+
+		$previous_subscription = wcs_get_subscription( $previous_value );
+		$new_subscription      = wcs_get_subscription( $new_value );
+
+		if ( ! $previous_subscription || ! $new_subscription ) {
+			return;
+		}
+
+		// Switch last order date on both subscriptions.
+		$previous_last_order_date_created = $previous_subscription->get_time( 'last_order_date_created' );
+		$new_last_order_date_created      = $new_subscription->get_time( 'last_order_date_created' );
+
+		$new_subscription->set_last_order_date_created( $previous_last_order_date_created );
+		$new_subscription->save();
+
+		$previous_subscription->set_last_order_date_created( $new_last_order_date_created );
+		$previous_subscription->save();
+	}
+
 	/**
 	 * Prints the HTML for the admin dropdown for order types to Woocommerce -> Orders screen.
 	 *

includes/data-stores/class-wcs-orders-table-subscription-data-store.php

@@ -41,6 +41,7 @@ class WCS_Orders_Table_Subscription_Data_Store extends \Automattic\WooCommerce\I
 		'_cancelled_email_sent'     => 'cancelled_email_sent',
 		'_requires_manual_renewal'  => 'requires_manual_renewal',
 		'_trial_period'             => 'trial_period',
+		'_last_order_date_created'  => 'last_order_date_created',
 
 		'_schedule_trial_end'       => 'schedule_trial_end',
 		'_schedule_next_payment'    => 'schedule_next_payment',

includes/data-stores/class-wcs-related-order-store-cpt.php

@@ -103,6 +103,8 @@ public function add_relation( WC_Order $order, WC_Order $subscription, $relation
 			$order->add_meta_data( $related_order_meta_key, $subscription_id, false );
 			$order->save();
 		}
+
+		do_action( 'wcs_orders_add_relation', $order, $subscription, $relation_type );
 	}
 
 	/**
@@ -124,6 +126,8 @@ public function delete_relation( WC_Order $order, WC_Order $subscription, $relat
 		}
 
 		$order->save();
+
+		do_action( 'wcs_orders_delete_relation', $order, $subscription, $relation_type );
 	}
 
 	/**

includes/data-stores/class-wcs-subscription-data-store-cpt.php

@@ -49,6 +49,7 @@ class WCS_Subscription_Data_Store_CPT extends WC_Order_Data_Store_CPT implements
 		'_cancelled_email_sent'     => 'cancelled_email_sent',
 		'_requires_manual_renewal'  => 'requires_manual_renewal',
 		'_trial_period'             => 'trial_period',
+		'_last_order_date_created'  => 'last_order_date_created',
 
 		'_schedule_trial_end'       => 'schedule_trial_end',
 		'_schedule_next_payment'    => 'schedule_next_payment',

includes/wcs-order-functions.php

@@ -277,6 +277,11 @@ function wcs_create_order_from_subscription( $subscription, $type ) {
 			throw new Exception( sprintf( __( 'There was an error fetching the new order (%1$s) for subscription %2$d.', 'woocommerce-subscriptions' ), $type, $subscription->get_id() ) );
 		}
 
+		// Update the subscription last_order_date_created on every time
+		// a child order is created.
+		$subscription->set_last_order_date_created( $new_order->get_date_created()->getTimestamp() );
+		$subscription->save();
+
 		/**
 		 * Filters the new order created from the subscription.
 		 *