只显示一次wc_add_notice [英] Show wc_add_notice only one time

问题描述

我有这个代码

add_action( 'woocommerce_add_to_cart_validation', 'custom_add_to_cart_validation', 10, 3 );
function custom_add_to_cart_validation( $passed, $product_id, $quantity) {
    $_product = wc_get_product( $product_id );
    $quantity_total = (array_sum($_POST['quantity']));
    // echo $quantity_total;

    if ($quantity_total % 2 != 0) {
        wc_add_notice( __( 'Multiple of 2 required quantity.', 'woocommerce' ), 'error' );
        $passed = false;
    }
    else{
        $passed = true;
    }var_dump($quantity_total);

    return $passed;
}

我有一个分组的产品，在&中有很多项目对于每种产品，如果条件为真，我会收到此通知..但是我只想显示一次.现在从每个产品的页面显示每个输入..的错误消息，我只想显示一次.

I have a grouped product with many items in & for each product if the condition it's true i'm getting this notice..but I want to display it just one time. Now is displayed error message for each input .. from page of each product, what I want is to display just a single time.

推荐答案

如果要删除所有先前的消息，则必须使用 在 wc_clear_notices() .woocommerce.com/wc-apidocs/function-wc_add_notice.html"rel =" nofollow noreferrer> wc_add_notice() .

If you want to remove all the previous messages then you have to use wc_clear_notices() before wc_add_notice().

因此您的代码应如下所示:

So your code should look like this:

add_action('woocommerce_add_to_cart_validation', 'custom_add_to_cart_validation', 10, 3);

function custom_add_to_cart_validation($passed, $product_id, $quantity)
{
    //...
    //...
    if ($quantity_total % 2 != 0)
    {
        wc_clear_notices(); //<--- check this line.
        wc_add_notice(__('Multiple of 2 required quantity.', 'woocommerce'), 'error');
        $passed = false;
    }
    //...
    //...
}

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