以编程方式为 WooCommerce 中的特定可变产品设置最小、最大和步骤数量

I use 购物车更新后 WooCommerce 购物车数量不会改变 https://stackoverflow.com/questions/65714608/woocommerce-cart-quantity-wont-change-after-cart-update/65715142#65715142用于自定义某些产品数量参数的应答代码（作为最小、最大和步长参数）.

现在我有一个产品 ID 为 27525 的可变产品，我想仅对该产品应用另一个规则，
数量规则详细信息：最小（默认）数量1, 最大数量24和步骤1.

我尝试使用下面的代码，问题是，
如果没有选择变化，则默认/最小数量为25，规则与一般数量设置相同，
如果我选择可用的变体，则默认数量将为 24。

add_filter( 'woocommerce_available_variation', 'variation_quantity_input_args', 10, 2 );
function variation_quantity_input_args( $args, $product ) {
    $sample_product_id = array(27525);

    if (in_array( $product->get_id(), $sample_product_id)) {
        $args['min_qty'] = 1;
        $args['max_qty'] = 24;
        return $args;
    }
}

如何更改代码并将规则应用于变量产品 27525？

$args['min_qty'] = 1; //default and min qty
$args['max_qty'] = 24; // max qty
$args['step'] = 1; // Seems won't work use woocommerce_available_variation, but I want to change the step to 1

The woocommerce_available_variation https://woocommerce.github.io/code-reference/files/woocommerce-includes-class-wc-product-variable.html#source-view.364钩子有WC_Product_Variation 产品对象 as its 第三个参数 and 不是可变产品.

随着woocommerce_available_variation hook 你不能设置 产品步骤.

可用的参数以下是（源代码WooCommerce /includes/class-wc-product-variable.php文件@版本3.0.0):

return apply_filters(
    'woocommerce_available_variation',
    array(
        'attributes'            => $variation->get_variation_attributes(),
        'availability_html'     => wc_get_stock_html( $variation ),
        'backorders_allowed'    => $variation->backorders_allowed(),
        'dimensions'            => $variation->get_dimensions( false ),
        'dimensions_html'       => wc_format_dimensions( $variation->get_dimensions( false ) ),
        'display_price'         => wc_get_price_to_display( $variation ),
        'display_regular_price' => wc_get_price_to_display( $variation, array( 'price' => $variation->get_regular_price() ) ),
        'image'                 => wc_get_product_attachment_props( $variation->get_image_id() ),
        'image_id'              => $variation->get_image_id(),
        'is_downloadable'       => $variation->is_downloadable(),
        'is_in_stock'           => $variation->is_in_stock(),
        'is_purchasable'        => $variation->is_purchasable(),
        'is_sold_individually'  => $variation->is_sold_individually() ? 'yes' : 'no',
        'is_virtual'            => $variation->is_virtual(),
        'max_qty'               => 0 < $variation->get_max_purchase_quantity() ? $variation->get_max_purchase_quantity() : '',
        'min_qty'               => $variation->get_min_purchase_quantity(),
        'price_html'            => $show_variation_price ? '<span class="price">' . $variation->get_price_html() . '</span>' : '',
        'sku'                   => $variation->get_sku(),
        'variation_description' => wc_format_content( $variation->get_description() ),
        'variation_id'          => $variation->get_id(),
        'variation_is_active'   => $variation->variation_is_active(),
        'variation_is_visible'  => $variation->variation_is_visible(),
        'weight'                => $variation->get_weight(),
        'weight_html'           => wc_format_weight( $variation->get_weight() ),
    ),
    $this,
    $variation
);

要设置产品变体的步骤，您需要使用woocommerce_quantity_input_args https://woocommerce.github.io/code-reference/files/woocommerce-includes-wc-template-functions.html#source-view.1727 hook.

如果您想为所有产品变体设置相同的步骤你可以使用这个钩子。

可用的参数以下是（源代码WooCommerce /includes/wc-template-functions.php文件@版本2.5.0):

$defaults = array(
    'input_id'     => uniqid( 'quantity_' ),
    'input_name'   => 'quantity',
    'input_value'  => '1',
    'classes'      => apply_filters( 'woocommerce_quantity_input_classes', array( 'input-text', 'qty', 'text' ), $product ),
    'max_value'    => apply_filters( 'woocommerce_quantity_input_max', -1, $product ),
    'min_value'    => apply_filters( 'woocommerce_quantity_input_min', 0, $product ),
    'step'         => apply_filters( 'woocommerce_quantity_input_step', 1, $product ),
    'pattern'      => apply_filters( 'woocommerce_quantity_input_pattern', has_filter( 'woocommerce_stock_amount', 'intval' ) ? '[0-9]*' : '' ),
    'inputmode'    => apply_filters( 'woocommerce_quantity_input_inputmode', has_filter( 'woocommerce_stock_amount', 'intval' ) ? 'numeric' : '' ),
    'product_name' => $product ? $product->get_title() : '',
    'placeholder'  => apply_filters( 'woocommerce_quantity_input_placeholder', '', $product ),
);

如果您想将产品步骤、最小数量和最大数量作为产品的自定义元进行管理，参见@LoicTheAztec的回答：

• 在 Woocommerce 中设置产品级别的最小数量、最大数量和步骤 https://stackoverflow.com/questions/62943477/set-quantity-minimum-maximum-and-step-at-product-level-in-woocommerce#62946194

ANSWER

为了回答你的问题，如果您想要父变量产品 ID 等于 27525 的所有产品变体具有以下值：

• 最小数量: 1
• 最大数量: 24
• Step: 1

您可以使用以下功能：

它适用于产品页面、购物车和循环。

// set the min and max quantity for each product variation (based on the variable product id)
add_filter( 'woocommerce_available_variation', 'variation_quantity_input_args', 10, 3 );
function variation_quantity_input_args( $args, $product, $variation ) {
    // set variable product ids
    $sample_product_id = array( 27525 );
    // if the selected variation belongs to one of the variable product ids
    // set the min and max quantity
    if ( in_array( $variation->get_parent_id(), $sample_product_id ) ) {
        $args['min_qty'] = 1;
        $args['max_qty'] = 24;
        return $args;
    }
    return $args;
}


// set the step for specific variable products (and for each product variation)
add_filter( 'woocommerce_quantity_input_args', 'set_step_for_specific_variable_products', 10, 2 );
function set_step_for_specific_variable_products( $args, $product ) {
    // set variable product ids
    $sample_product_id = array( 27525 );
    
    // on the product page
    if ( ! is_cart() ) {
        // if the id of the variable product is in the array
        if ( in_array( $product->get_id(), $sample_product_id ) ) {
            $args['input_value'] = 1;
            $args['min_value'] = 1;
            $args['max_value'] = 24;
            $args['step'] = 1;
        }
    // in the cart
    } else {
        // if the id of the product variation belongs to a variable product present in the array
        if ( in_array( $product->get_parent_id(), $sample_product_id ) ) {
            $args['min_value'] = 1;
            $args['step'] = 1;
        }
    }
    return $args;
}

该代码已经过测试并且可以工作。将其添加到活动主题的functions.php中。