更改 Woocommerce 3 中特定产品标签的所有产品价格

我使用了一个函数来自动标记所有产品，而无需使用 SQL 或手动标记所有产品，因为它们会非常频繁地重新上传和更新.

I used a function to be able to markup all product automatically without having to use SQL or manually do it as they get re-uploaded and updated very frequently.

除了 has_term if 语句之外，该函数完美运行.它们在 Wordpress 后端工作并在我添加标签后立即应用定价规则，但是当我尝试将产品添加到购物车时，它会恢复到购物车和结帐页面中的原始价格.如果我删除那个 if 语句，它就没有问题.我需要一种方法让该功能仅适用于标记为ama"的产品.

The function works perfectly other than the has_term if statements. They work in the Wordpress backend and apply the pricing rules as soon as I add the tag, but when I try to add the product to cart it reverts back to the original price in the cart and checkout pages. If I remove that if statement it works with no issues. I need a way to have the function only apply to products tagged 'ama'.

// Simple, grouped and external products
add_filter('woocommerce_product_get_price', 'custom_price', 90, 2 );
add_filter('woocommerce_product_get_regular_price', 'custom_price', 90, 2 );

// Product variations (of a variable product)
add_filter('woocommerce_product_variation_get_regular_price', 'custom_price', 99, 2 );
add_filter('woocommerce_product_variation_get_price', 'custom_price', 90, 2 );

// Variable product price range
add_filter('woocommerce_variation_prices_price', 'custom_variation_price', 90, 3 );
add_filter('woocommerce_variation_prices_regular_price', 'custom_variation_price', 90, 3 );

function custom_price( $price, $product ) {

    if ( has_term( 'ama', 'product_tag' ) ) {

        if ($price > 0.01 && $price < 4.99) {

            $price *= 2.5;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 5 && $price < 9.99) {

            $price *= 2;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 10 && $price < 19.99) {

            $price *= 1.75;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 20 && $price < 39.99) {

            $price *= 1.5;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 40 && $price < 59.99) {

            $price *= 1.35;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 60 && $price < 79.99) {

            $price *= 1.25;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 80 && $price < 999.99) {

            $price *= 1.20;  

            $price = ceil($price + 0.01) - 0.01;

        }

    }

    return $price;
}

function custom_variation_price( $price, $variation, $product ) {

    if ( has_term( 'ama', 'product_tag' ) ) {

        if ($price > 0.01 && $price < 4.99) {

            $price *= 2.5;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 5 && $price < 9.99) {

            $price *= 2;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 10 && $price < 19.99) {

            $price *= 1.75;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 20 && $price < 39.99) {

            $price *= 1.5;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 40 && $price < 59.99) {

            $price *= 1.35;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 60 && $price < 79.99) {

            $price *= 1.25;  

            $price = ceil($price + 0.01) - 0.01;

        }

        elseif ($price > 80 && $price < 999.99) {

            $price *= 1.20;  

            $price = ceil($price + 0.01) - 0.01;

        }

    }

    return $price;
}