php - 防止客户从 Woocommerce 中超过 3 个供应商处订购

Question

我找到了类似的解决方案，例如:“如何将订单限制在一个类别中”。我尝试修改代码，但它不够具体。

在我的例子中，每个供应商都是由一个产品属性值定义的，总共有 8 个术语。如果购物车包含来自 3 个以上不同条款的产品，我需要设置一条消息，内容为“抱歉，您一次只能从 3 个不同的供应商处订购”。

这是我用作起点的内容:

add_action( 'woocommerce_add_to_cart', 'three_vendors' );
function three_vendors() {

  if ATTRIBUTE = SELECT A VENDOR; NUMBER OF TERMS > 3 {

   echo "Sorry! You can only order from 3 Vendors at a time.”;

   }
}

中间一行是我用非php语言填空

我正在寻找一种方法来定义购物车中的变化量。如果属性无法做到这一点，我愿意改用类别。

有人知道怎么做吗？

Answer 1

Update: Is not possible to manage variations with woocommerce_add_to_cart_valisation hook

相反，我们可以使用 Hook 在 woocommerce_add_to_cart 过滤器 Hook 中的自定义函数，当购物车中有超过 3 个供应商(商品)时，删除最后添加的购物车商品:

// Remove the cart item and display a notice when more than 3 values for "pa_vendor" attibute.
add_action( 'woocommerce_add_to_cart', 'no_more_than_three_vendors', 10, 6 );

function no_more_than_three_vendors( $cart_item_key, $product_id, $quantity, $variation_id, $variation, $cart_item_data ) {

    // Check only when there is more than 3 cart items
    if ( WC()->cart->get_cart_contents_count() < 4 ) return;

    // SET BELOW your attribute slug… always begins by "pa_"
    $attribute_slug = 'pa_vendor'; // (like for "Color" attribute the slug is "pa_color")

    // The current product object
    $product = wc_get_product( $variation_id );
    // the current attribute value of the product
    $curr_attr_value = $product->get_attribute( $attribute_slug );

    // We store that value in an indexed array (as key /value)
    $attribute_values[ $curr_attr_value ] = $curr_attr_value;

    //Iterating through each cart item
    foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {

        // The attribute value for the current cart item
        $attr_value = $cart_item[ 'data' ]->get_attribute( $attribute_slug );

        // We store the values in an array: Each different value will be stored only one time
        $attribute_values[ $attr_value ] = $attr_value;
    }
    // We count the "different" values stored
    $count = count($attribute_values);

    // if there is more than 3 different values
    if( $count > 3 ){
        // We remove last cart item
        WC()->cart->remove_cart_item( $cart_item_key );
        // We display an error message
        wc_clear_notices();
        wc_add_notice( __( "Sorry, you may only order from 3 different Vendors at a time. This item has been removed", "woocommerce" ), 'error' );
    }
}

代码位于您的事件子主题(或主题)的 function.php 文件中或任何插件文件中。

此代码已经过测试，应该适合您。它将检查与您的特定属性相关的属性值，并将删除最后添加的超过 3 个属性值的购物车项目。

The only annoying thing is that I can't remove the classic added to cart notice for the moment. I will try to find another way…