How Can I Automate WooCommerce Order Completion for Specific Payment Methods?

Overcoming the Limitations of WooCommerce's Order Autocompletion

Normally, WooCommerce automates the completion of orders for virtual products. However, for payment methods such as "Bank wire," "Cash on delivery," and "Cheque," this functionality may not be available. To address this issue and conditionally apply order autocompletion based on payment methods, the following solutions can be implemented:

Using the woocommerce_payment_complete_order_status Filter Hook

This filter hook is triggered when a payment is required during checkout and is used by all payment methods. By modifying the allowed paid order statuses, you can achieve conditional autocompletion:

add_filter( 'woocommerce_payment_complete_order_status', 'wc_auto_complete_paid_order', 10, 3 );
function wc_auto_complete_paid_order( $status, $order_id, $order ) {
    return 'completed';
}

Utilizing the woocommerce_thankyou Action Hook

For WooCommerce versions 3 and above, the following code can be used:

add_action( 'woocommerce_thankyou', 'wc_auto_complete_paid_order', 20, 1 );
function wc_auto_complete_paid_order( $order_id ) {
    if ( ! $order_id )
        return;

    $order = wc_get_order( $order_id );

    if ( in_array( $order->get_payment_method(), array( 'bacs', 'cod', 'cheque', '' ) ) ) {
        return;
    } else {
        $order->update_status( 'completed' );
    }
}

Original Solution

For all WooCommerce versions, the following code can be used:

add_action( 'woocommerce_thankyou', 'custom_woocommerce_auto_complete_paid_order', 10, 1 );
function custom_woocommerce_auto_complete_paid_order( $order_id ) {
    if ( ! $order_id )
    return;

    $order = wc_get_order( $order_id );

    if ( 'bacs' == get_post_meta($order_id, '_payment_method', true) ) || ( 'cod' == get_post_meta($order_id, '_payment_method', true) ) || ( 'cheque' == get_post_meta($order_id, '_payment_method', true) ) ) {
        return;
    } elseif( $order->get_status()  === 'processing' ) {
        $order->update_status( 'completed' );
    }
}

These solutions provide conditional order autocompletion for paid orders based on the specified payment methods, ensuring efficient and accurate order processing in WooCommerce stores that accept a variety of payment options.

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