强制特定的 WooCommerce 产品单独销售

Question

我试图强制单独销售 WooCommerce 中的特定产品。但是我希望这个产品无限量销售。

基于Force sold individually product to be bought alone in WooCommerce答案代码效果很好，我目前使用：

function filter_woocommerce_add_to_cart_validation( $passed, $product_id, $quantity, $variation_id = null, $variations = null ) {
    // Product id to bought alone 
    $product_id_alone = 666;
 
    // Set variable
    $alone = true;
 
    // If passed
    if ( $passed ) {
        // If cart is NOT empty when a product is added
        if ( !WC()->cart->is_empty() ) {
 
            // If product id added = product id alone
            if ( $product_id_alone == $product_id ) {
                $alone = false;
            } else {
                // Generate a unique ID for the cart item
                $product_cart_id = WC()->cart->generate_cart_id( $product_id_alone );
 
                // Check if product is in the cart
                $in_cart = WC()->cart->find_product_in_cart( $product_cart_id );
 
                // If product is already in cart
                if ( $in_cart ) {
                    $alone = false;
                }
            }
        } else {
 
            if ( $product_id_alone == $product_id) {
                $alone = true;         
            }
        }
    }
 
    if ( $alone == false ) {
        // Set error message
        $message = 'Product 666 must be bought separately.';
        wc_add_notice( __( $message, 'woocommerce' ), 'error' );
        $passed = false;
    }
 
    return $passed;
}
add_filter( 'woocommerce_add_to_cart_validation', 'filter_woocommerce_add_to_cart_validation', 10, 5 );

如果购物车是空的，我可以添加带有自定义数量的 ID 666 的产品。

将产品 ID 666 添加到购物车后，我无法再将其他产品添加到购物车。

如果我首先将另一个产品添加到空购物车，则无法将产品 ID 666 添加到购物车。

问题是，如果我将产品 ID 666 添加到空购物车中，我无法通过将更多产品添加到购物车来增加产品 666 的数量。

Answer 1

要强制在单独的订单中单独销售特定产品，请使用：

function filter_woocommerce_add_to_cart_validation( $passed, $product_id, $quantity, $variation_id = null, $variations = null ) {
    // Product id to bought alone 
    $product_id_alone = 666;

    // Set variable
    $flag = false;

    // If cart is NOT empty when a product is added
    if ( ! WC()->cart->is_empty() ) {
        // Generate a unique ID for the cart item
        $product_cart_id = WC()->cart->generate_cart_id( $product_id_alone );

        // Check if product is in the cart
        $in_cart = WC()->cart->find_product_in_cart( $product_cart_id );

        // If product is already in cart & product ID added is not equal to product ID alone
        if ( $in_cart && ( $product_id != $product_id_alone ) ) {
            $flag = true;
        // Product ID alone is NOT in cart & product ID added is equal to product ID alone
        } elseif( ! $in_cart && ( $product_id == $product_id_alone ) ) {
            $flag = true;
        }
    }

    // True
    if ( $flag ) {
        // Set error message
        wc_add_notice( sprintf(
            __( 'Product %s must be bought separately', 'woocommerce' ),
            $product_id_alone,
        ), 'error' );

        // Passed = false
        $passed = false;
    }

    return $passed;
}
add_filter( 'woocommerce_add_to_cart_validation', 'filter_woocommerce_add_to_cart_validation', 10, 5 );

添加 ID 为 666 的产品时：

如果购物车是空的，可以添加任意数量的产品。
如果购物车不为空且 ID 为 666 的产品不在购物车中，请停止。
如果购物车不为空且 ID 为 666 的产品在购物车中，请继续。

添加具有不同 ID 的产品时：

如果购物车是空的，可以添加任意数量的产品。
如果购物车不为空且 ID 为 666 的产品不在购物车中，请继续。
如果购物车不为空且 ID 为 666 的产品在购物车中，请停止。

Answer 2

这是我的脚本，可根据特定标签的值防止某种类型的产品与另一种产品按相同的顺序放置

function wc_giftcard_with_own_order( $passed_validation, $product_id ) {
    $cart = WC()->cart->get_cart();
    
    if ( empty($cart) ) {
        // carrello vuoto, per cui passa
        return $passed_validation;
    }
    
    // carrello non vuoto
    // conta quanti prodotti sono di tipo gift card e quanti no
    // tag "gift card" = ID tag 340
    $coupon_si = 0;
    $coupon_no = 0;
    
    foreach ( $cart as $cart_item_key => $cart_item )
        if ( has_term( 340, 'product_tag', $cart_item['product_id'] ) ) {
            $coupon_si += 1;
        }
        else {
            $coupon_no += 1;
        }
        
    // se il prodotto corrente è una gift card, allora può essere aggiunto ad un carrello con soli articole gift card
    // se il prodotto corrente non è una gift card, allora può essere aggiunto ad un carrello con soli articoli non gift card
    if ( has_term( 340, 'product_tag', $product_id ) ) {
        if ( $coupon_no == 0 ) {
            return $passed_validation;
        }
        else {
            wc_add_notice( __( 'La gift card NON può essere acquistata con altri prodotti', 'woocommerce' ), 'error' );
            return false;
        }
    }
    else {
        if ( $coupon_si == 0 ) {
            return $passed_validation;
        }
        else {
            wc_add_notice( __( 'In ordine esiste già almeno una gift card, che NON può essere acquistata con altri prodotti', 'woocommerce' ), 'error' );
            return false;
        }
    }
    
    return $passed_validation;
}
add_filter( 'woocommerce_add_to_cart_validation', 'wc_giftcard_with_own_order', 10, 2 );

强制特定的 WooCommerce 产品单独销售

Force specific WooCommerce product to be sold in separate order

php

wordpress

product

cart

woocommerce