WooCommerce product search for My Account / Orders

wc-my-orders-products-search.php

//Create search bar on the top of the my account / orders page
add_action('woocommerce_before_account_orders', function(){
	?>
	<form method="get">
		<input type="text" name="keyword" placeholder="Keresés" value="<?php echo esc_attr($_GET['keyword']); ?>">
		<input type="submit" value="Keresés" />
	</form>
	<?php

	$customer_orders = false;
});

//Overwrite the woocommerce_account_orders function to load a different query for custom search
function woocommerce_account_orders( $current_page ) {
	$current_page = empty( $current_page ) ? 1 : absint( $current_page );

	//Check if a keyword is set
	if(isset($_GET['keyword'])) {

		//Find order ids with a given keyword(this will search for product names)
		$order_ids = wc_order_search( wc_clean( wp_unslash( $_GET['keyword'] ) ) );
		$order_statuses = wc_get_order_statuses();
		$customer_orders = false;

		//If we have some search results
		if ( ! empty( $order_ids ) ) {

			//Create a new wp_query
			$args = array(
				'post__in' => $order_ids,
				'meta_query' => array(
					array(
						'key'     => '_customer_user',
						'value'   => get_current_user_id(),
						'compare' => '=',
					),
				),
				'post_status' => array_keys( $order_statuses ),
				'post_type' => 'shop_order'
			);
			$the_query = new WP_Query( $args );
			$the_query->query_vars['shop_order_search'] = true;

			//Customize query, so the orders.php template can use it
			$customer_orders = $the_query;
			$customer_orders->orders = array();

			//Collect found order ids
			if ( $the_query->have_posts() ) {
				while ( $the_query->have_posts() ) {
					$the_query->the_post();
					$customer_orders->orders[] = get_the_ID();
				}
			}

		}

		wc_get_template(
			'myaccount/orders.php',
			array(
				'current_page'    => absint( $current_page ),
				'customer_orders' => $customer_orders,
				'has_orders'      => 0 < $customer_orders->found_posts,
			)
		);

	//Return original stuff if keyword is not set
	} else {
		$customer_orders = wc_get_orders(
			apply_filters(
				'woocommerce_my_account_my_orders_query',
				array(
					'customer' => get_current_user_id(),
					'page'     => $current_page,
					'paginate' => true,
				)
			)
		);

		wc_get_template(
			'myaccount/orders.php',
			array(
				'current_page'    => absint( $current_page ),
				'customer_orders' => $customer_orders,
				'has_orders'      => 0 < $customer_orders->total,
			)
		);
	}

}