Pre-orders

The pre-order module lets you mark products as pre-order, display the release date and change the button text. Useful for stores with electronics, books, games and other products offered before release.

Requirements

Polski PRO requires: Polski (free) v1.3.0+, WordPress 6.4+, WooCommerce 8.0+, PHP 8.1+

Global configuration

Go to WooCommerce > Settings > Polski PRO > Pre-orders.

Setting	Default value	Description
Button text	”Zamów w przedsprzedaży”	Global button text for pre-order products
Availability text	”Dostępne od {date}“	Template text displayed instead of stock status
Date format	d.m.Y	Display format for the release date
Block mixed cart	Yes	Prevents adding standard products to a cart with pre-orders
Block message	”Produkty w przedsprzedaży muszą być zamawiane osobno.”	Message displayed when attempting to mix

Product configuration

Meta fields

Pre-order settings are located in the product editor, in the General tab of the product data panel.

Meta field	Key	Type	Description
Enable pre-order	_polski_preorder_enabled	bool	Marks the product as pre-order
Release date	_polski_preorder_release_date	string (Y-m-d)	Date from which the product is available as standard
Button text	_polski_preorder_button_text	string	Overrides the global button text for this product
Availability text	_polski_preorder_availability_text	string	Overrides the global availability text

Setting via WP-CLI

wp post meta update 123 _polski_preorder_enabled "yes"
wp post meta update 123 _polski_preorder_release_date "2026-06-15"
wp post meta update 123 _polski_preorder_button_text "Zamów teraz - premiera 15 czerwca"

Programmatic setting

update_post_meta($product_id, '_polski_preorder_enabled', 'yes');
update_post_meta($product_id, '_polski_preorder_release_date', '2026-06-15');

Frontend display

Purchase button

When a product is marked as pre-order, the “Add to cart” button text changes to the configured pre-order text. This applies to:

• Single product page
• Archive, category and tag pages
• Search results
• WooCommerce blocks (Product Grid, Product Collection)

Availability text

Instead of the standard stock status (“In stock”, “Out of stock”), the availability text with the release date is displayed. The {date} placeholder is replaced with the formatted date.

Display example:

Dostępne od 15.06.2026

Automatic deactivation

After the release date passes, the product automatically reverts to standard mode. Deactivation is handled by a WP-Cron task that runs daily at 00:01.

/**
 * Akcja wywoływana po automatycznej dezaktywacji przedsprzedaży.
 *
 * @param int    $product_id   ID produktu
 * @param string $release_date Data premiery (Y-m-d)
 */
do_action('polski_pro/preorder/deactivated', int $product_id, string $release_date);

Example - notifying customers about availability:

add_action('polski_pro/preorder/deactivated', function (int $product_id, string $release_date): void {
    $subscribers = get_post_meta($product_id, '_polski_preorder_subscribers', true);
    if (is_array($subscribers)) {
        foreach ($subscribers as $email) {
            wp_mail(
                $email,
                'Produkt jest już dostępny!',
                sprintf('Produkt %s jest teraz dostępny do zakupu.', get_the_title($product_id))
            );
        }
    }
}, 10, 2);

Cart validation

Mixed product blocking

When the “Block mixed cart” option is enabled, the customer cannot add to the cart simultaneously:

• Pre-order products and standard products
• Pre-order products with different release dates (optionally)

When attempting to add a different product type, the block message is displayed and the product is not added.

Validation hook

/**
 * Filtruje, czy koszyk może zawierać mieszane typy produktów.
 *
 * @param bool $allow       Czy pozwolić na mieszanie (domyślnie false)
 * @param int  $product_id  ID dodawanego produktu
 * @param array $cart_items  Aktualne produkty w koszyku
 */
apply_filters('polski_pro/preorder/allow_mixed_cart', bool $allow, int $product_id, array $cart_items): bool;

Example - allowing mixing for VIP users:

add_filter('polski_pro/preorder/allow_mixed_cart', function (bool $allow, int $product_id, array $cart_items): bool {
    if (current_user_can('manage_woocommerce')) {
        return true;
    }
    return $allow;
}, 10, 3);

Shortcode

Displaying a countdown to the release date:

[polski_preorder_countdown product_id="123" format="days" label="Do premiery pozostało:"]

Parameter	Required	Description
product_id	No	Product ID (defaults to current)
format	No	Format: days, full (days, hours, minutes)
label	No	Label text before the countdown

Hooks

Button text filter

/**
 * Filtruje tekst przycisku przedsprzedaży.
 *
 * @param string      $text    Tekst przycisku
 * @param \WC_Product $product Obiekt produktu
 */
apply_filters('polski_pro/preorder/button_text', string $text, \WC_Product $product): string;

Example - dynamic text with price:

add_filter('polski_pro/preorder/button_text', function (string $text, \WC_Product $product): string {
    return sprintf('Zamów za %s - premiera wkrótce', $product->get_price_html());
}, 10, 2);

Availability text filter

/**
 * Filtruje tekst dostępności przedsprzedaży.
 *
 * @param string      $text         Tekst dostępności
 * @param string      $release_date Data premiery (Y-m-d)
 * @param \WC_Product $product      Obiekt produktu
 */
apply_filters('polski_pro/preorder/availability_text', string $text, string $release_date, \WC_Product $product): string;

Variant compatibility

The pre-order module works with variable products. Each variant can have independent pre-order settings:

• Variant A - standard (available immediately)
• Variant B - pre-order (release in 2 weeks)

Mixing pre-order and standard variants within a single product is allowed - cart validation only applies to mixing different products.

Troubleshooting

Product does not switch automatically after the release date Check if WP-Cron is working properly. If you use an external CRON, make sure wp-cron.php is called regularly. Alternatively, run manually: wp cron event run polski_pro_preorder_check.

Customer added pre-order and regular products to the cart Check if the “Block mixed cart” option is enabled. Clear cache if you use caching plugins that cache cart fragments.

Release date displays in the wrong format Check the “Date format” setting in the module configuration. The format uses standard PHP date() placeholders.

Next steps

• Report issues: GitHub Issues
• Related modules: Bundles and add-ons

This page is for informational purposes only and does not constitute legal advice. Consult a lawyer before implementation. Polski for WooCommerce is open source software (GPLv2) provided without warranty.