For Developers

Filters

wpify_woo_heureka_render_widget

Controls whether the certification widget should be displayed.

add_filter( 'wpify_woo_heureka_render_widget', function( $render ) {
    // Do not display widget on specific pages
    if ( is_page( 'landing-page' ) ) {
        return false;
    }
    return $render;
} );

Parameter	Type	Description
$render	bool	true to display, false to hide

Returns: bool

---

wpify_woo_heureka_disable_send

Allows blocking data submission to Heureka for a specific order.

add_filter( 'wpify_woo_heureka_disable_send', function( $disable, $order ) {
    // Do not send for B2B orders
    if ( $order->get_meta( '_is_b2b_order' ) ) {
        return true;
    }
    return $disable;
}, 10, 2 );

Parameter	Type	Description
$disable	bool	true to block sending
$order	WC_Order	Order object

Returns: bool

---

wpify_woo_heureka_add_optout

Controls whether to add the opt-out checkbox to checkout.

add_filter( 'wpify_woo_heureka_add_optout', function( $add_optout ) {
    // Do not add opt-out for registered customers
    if ( is_user_logged_in() ) {
        return false;
    }
    return $add_optout;
} );

Parameter	Type	Description
$add_optout	bool	true to add checkbox

Returns: bool

---

wpify_woo_heureka_overeno_item_id

Modifies the product ID sent to Heureka.

add_filter( 'wpify_woo_heureka_overeno_item_id', function( $item_id, $item, $order ) {
    // Use SKU instead of ID
    $product = $item->get_product();
    if ( $product && $product->get_sku() ) {
        return $product->get_sku();
    }
    return $item_id;
}, 10, 3 );

Parameter	Type	Description
$item_id	string	Product ID
$item	WC_Order_Item_Product	Order item
$order	WC_Order	Order object

Returns: string

---

wpify_woo_heureka_overeno_data

Modifies the complete data sent to Heureka.

add_filter( 'wpify_woo_heureka_overeno_data', function( $data, $order ) {
    // Add custom data
    $data['custom_field'] = 'value';
    return $data;
}, 10, 2 );

Parameter	Type	Description
$data	array	Data for sending
$order	WC_Order	Order object

Returns: array

Data structure:

[
    'email' => 'customer@email.com',
    'order_id' => 12345,
    'products' => [
        ['id' => 'SKU123', 'name' => 'Product name'],
        // ...
    ]
]

Shortcodes

[wpify_woo_heureka_reviews]

Displays reviews from Heureka.

[wpify_woo_heureka_reviews count="6" widget="1" button_text="" button_url=""]

Attribute	Default	Description
count	6	Number of reviews
widget	1	Widget (1) or list (0)
button_text	empty	Button text
button_url	empty	Button URL

Order Meta Data

_wpify_woo_heureka_optout_agreement

Stores the customer’s choice regarding opt-out/opt-in.

// Getting the value
$optout = $order->get_meta( '_wpify_woo_heureka_optout_agreement' );

// Values:
// '1' or 'yes' - customer checked the checkbox
// empty - customer did not check the checkbox

Logic:

• Opt-out mode: If the value is 1/yes, the survey is not sent
• Opt-in mode: If the value is 1/yes, the survey is sent

Logging

The module supports logging for diagnostics. Logs are saved to:

wp-content/uploads/wpify-woo-logs/heureka-overeno-*.log

Logs contain:

• Successful submissions to Heureka
• API communication errors
• Opt-out choice information

Block Checkout

The module fully supports WooCommerce block checkout. The opt-out checkbox is automatically integrated into the block checkout using the WooCommerce Store API.