Woocommerce：如何在购物车中只允许一种产品类型？

Question

我有两种产品类型，一种是简单产品 $cart_item['default-engraving']，另一种是信用产品 $cart_item['default-engraving'] && $cart_item['iconic-engraving']。我正在尝试找到一种解决方案，如果我将简单产品添加到购物车，则不应添加信用产品。或者，如果我将信用产品添加到购物车，则不应添加简单产品。但是，如果我愿意，我可以添加任意数量的相同类型，例如简单的产品类型。

Answer 1

你可以试试这个

    add_filter( 'woocommerce_add_to_cart_validation', 'only_one_product_category_allowed', 20, 3 );
function only_one_product_category_allowed( $passed, $product_id, $quantity) {

    // Getting the product categories term slugs in an array for the current product
    $term_slugs   = wp_get_post_terms( $product_id, 'product_cat', array('fields' => 'slugs') );

    // Loop through cart items
    foreach (WC()->cart->get_cart() as $cart_item_key => $cart_item ){

        // Check if the product category of the current product don't match with a cart item

        $_product = wc_get_product( $cart_item['product_id']; );
if( $_product->is_type( 'simple' ) ) {
// code to not allow other product type
} else {
// do stuff for everything else
}
    }
}

Answer 2

更新：无法在添加到购物车事件中检测自定义购物车项目数据。

检查购物车商品可以防止购物车商品同时包含 $cart_item['default-engraving'] 和 $cart_item['iconic-engraving']：

add_action( 'woocommerce_check_cart_items', 'check_cart_items_custom_data' );
function check_cart_items_custom_data() {
    // Initializing: set the current product type in an array
    $types = [];

    // Loop through cart items
    foreach (WC()->cart->get_cart() as $item ){
        if( isset( $item['default-engraving'] ) )
            $types[] = 'default';

        if( isset( $item['iconic-engraving'] ) )
            $types[] = 'iconic';
    }

    $types = array_unique( $types );

    // Check the number of product types allowing only one
    if( count( $types ) > 1 ){

        // Displaying a custom notice and avoid checkout
        wc_add_notice( __('Only items from one product type are allowed in cart'), 'error' );
    }
}

代码进入活动子主题（或活动主题）的 functions.php 文件。 已测试并有效。

原始答案：（它不适用于您的情况，因为无法在添加到购物车事件中检测到它）

以下是定位产品类型以仅允许购物车中的一种方式：

add_filter( 'woocommerce_add_to_cart_validation', 'only_one_product_type_allowed', 10, 3 );
function only_one_product_type_allowed( $passed, $product_id, $quantity ) {

    // Initializing: set the current product type in an array
    $types = [ wc_get_product( $product_id )->get_type() ];

    // Loop through cart items
    foreach (WC()->cart->get_cart() as $item ){
        // Set each product type in the array
        $types[] = wc_get_product( $item['product_id'] )->get_type();
    }

    $types = array_unique( $types );

    // Check the number of product types allowing only one
    if( count( $types ) > 1 ){

        // Displaying a custom notice
        wc_add_notice( __('Only items from one product type are allowed in cart'), 'error' );
        return false; // Avoid add to cart
    }

    return $passed;
}

代码进入活动子主题（或活动主题）的 functions.php 文件。 已测试并有效。

Woocommerce：如何在购物车中只允许一种产品类型？

Woocommerce: How to allow only one product type in a cart?

php

wordpress

product

cart

woocommerce