结帐前需要 WooCommerce 购物车中的简单产品以获得产品变体

Require simple products in WooCommerce cart for product variations before checkout

将一些产品变体添加到购物车后,需要一些简单的产品来匹配购物车中的产品变体。

如果购物车中没有正确的简单产品,将显示一条消息,用户无法继续结帐。

如果购物车中的产品变体,而所需的简单产品不在购物车中,则应显示通知。

add_action('woocommerce_before_cart', 'product_cart_check');

function product_cart_check() {
    foreach (WC()->cart->get_cart() as $cart_item) {
        // Target product variation
        $product_variation_ids = array(27741);
        // Simple products should match the product variation
        $simple_product_ids = array(26924, 26925);

        if (in_array($cart_item['variation_id'], $product_variation_ids)) {
            if (!in_array($cart_item['product_id'], $simple_product_ids)) {
            // Display message
            wc_print_notice('Please add required simple products to your cart', 'notice');
            }
        }
    }
}

我有上面的代码,但它没有按预期工作。即使我将所需的简单产品添加到购物车,通知也会始终显示。有什么建议吗?

要求购物车中的简单产品用于 (a) 产品变体:

  • 改用 woocommerce_check_cart_items 钩子
  • 使用 array_diff() 将数组与一个或多个其他数组进行比较,并 returns 数组中不存在于任何其他数组中的值。
  • 要删除继续结帐按钮,您可以使用 woocommerce_proceed_to_checkout 钩子

因此,对于特定变体 ID,您会得到:

function get_cart_item_ids() {
    // Initialize
    $ids = array();

    // WC Cart NOT null
    if ( ! is_null( WC()->cart ) ) {
        // Loop through cart contents
        foreach ( WC()->cart->get_cart_contents() as $cart_item ) {
            // Push to array
            $ids[] = $cart_item['data']->get_id();
        }
    }
    
    return $ids;
}

function action_woocommerce_check_cart_items() {
    // Get cart item ids
    $cart_item_ids = get_cart_item_ids();
    
    // Target product variation
    $product_variation_id = 27741;
    
    // Simple products should match the product variation
    $simple_product_ids = array( 26924, 26925 );
    
    // Checks if a value exists in an array
    if ( in_array( $product_variation_id, $cart_item_ids ) ) {
        // Computes the difference of arrays
        if ( array_diff( $simple_product_ids, $cart_item_ids ) ) {
            // Notice
            wc_print_notice( __( 'Please add required simple products to your cart', 'woocommerce' ), 'notice' ); 
            
            // Remove proceed to checkout button
            remove_action( 'woocommerce_proceed_to_checkout', 'woocommerce_button_proceed_to_checkout', 20 );
        }
    }
}   
add_action( 'woocommerce_check_cart_items' , 'action_woocommerce_check_cart_items', 10, 0 );

对多个产品变体 ID 应用相同的方法:

function get_cart_item_ids() {
    // Initialize
    $ids = array();

    // WC Cart NOT null
    if ( ! is_null( WC()->cart ) ) {
        // Loop through cart contents
        foreach ( WC()->cart->get_cart_contents() as $cart_item ) {
            // Push to array
            $ids[] = $cart_item['data']->get_id();
        }
    }
    
    return $ids;
}

function action_woocommerce_check_cart_items() {
    // Get cart item ids
    $cart_item_ids = get_cart_item_ids();
    
    // Target product variations
    $product_variation_ids = array( 27741, 56 );
    
    // Simple products should match the product variation
    $simple_product_ids = array( 26924, 26925 );
    
    // Initialize
    $flag = false;
    
    // Loop through
    foreach ( $product_variation_ids as $product_variation_id ) {   
        // Checks if a value exists in an array
        if ( in_array( $product_variation_id, $cart_item_ids ) ) {
            // Computes the difference of arrays
            if ( array_diff( $simple_product_ids, $cart_item_ids ) ) {
                $flag = true;
                break;
            }
        }
    }
    
    // True
    if ( $flag ) {
        // Notice
        wc_print_notice( __( 'Please add required simple products to your cart', 'woocommerce' ), 'notice' ); 

        // Remove proceed to checkout button
        remove_action( 'woocommerce_proceed_to_checkout', 'woocommerce_button_proceed_to_checkout', 20 );   
    }   
}   
add_action( 'woocommerce_check_cart_items' , 'action_woocommerce_check_cart_items', 10, 0 );