检查客户是否购买了东西并将产品添加到 WooCommerce 中的购物车

Question

以下代码在 WooCommerce 中自动将产品添加到购物车：

add_action( 'template_redirect', 'add_product_to_cart' );
function add_product_to_cart() {
    if ( ! is_admin() ) {
        $product_id = 64;
        $found = false;
        //check if product already in cart
        if ( sizeof( WC()->cart->get_cart() ) > 0 ) {
            foreach ( WC()->cart->get_cart() as $cart_item_key => $values ) {
                $_product = $values['data'];
                if ( $_product->get_id() == $product_id )
                    $found = true;
            }
            // if product not found, add it
            if ( ! $found )
                WC()->cart->add_to_cart( $product_id );
        } else {
            // if no products in cart, add it
            WC()->cart->add_to_cart( $product_id );
        }
    }
}

答案Checking if customer has already bought something in WooCommerce 允许使用自定义条件函数has_bought() 检查用户是否已经购买。

所以我想要检查客户之前是否订购过并且：

• 如果这是他们的第一个订单，请将产品 A 强制放入购物车或
• 如果他们已经购买了一次或多次，则强制产品 B 进入 购物车

但我没有找到在我的代码中使用它的方法。

任何帮助将不胜感激。

Answer 1

下面的代码使用the custom function has_bought()。它会自动将新客户和已确认客户的不同产品添加到购物车：

add_action( 'template_redirect', 'add_product_to_cart_conditionally' );
function add_product_to_cart_conditionally() {
    if ( is_admin() )  return; // Exit

    // Below define the product Id to be added:
    $product_A = 37; // <== For new customers that have not purchased a product before (and guests)
    $product_B = 53; // <== For confirmed customers that have purchased a product before

    $product_id = has_bought() ? $product_B : $product_A;

    // If cart is empty
    if( WC()->cart->is_empty() ) {
        WC()->cart->add_to_cart( $product_id ); // Add the product
    }
    // If cart is not empty
    else {
        // Loop through cart items (check cart items)
        foreach ( WC()->cart->get_cart() as $item ) {
            // Check if the product is already in cart
            if ( $item['product_id'] == $product_id ) {
                return; // Exit if the product is in cart
            }
        }
        // The product is not in cart: We add it
        WC()->cart->add_to_cart( $product_id );
    }
}

代码进入活动子主题（或活动主题）的functions.php 文件中。经过测试并且可以工作。

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