php - 在 WooCommerce 中，随着自定义库存数量的减少，将 "out-of-stock"产品变体变灰

Question

我使用了很棒的片段 https://jeroensormani.com/custom-stock-quantity-reduction/向变体添加附加设置，以将主要库存库存减少变体中的设定数量。
我现在面临的问题是它不检查这些变体是否缺货(例如，主要库存为 10，捆绑设置设置为 12 瓶)。
我用来添加总库存减少乘数的代码是:

// For implementation instructions see: https://aceplugins.com/how-to-add-a-code-snippet/

/**
 * Simple product setting.
 */
function ace_add_stock_inventory_multiplier_setting() {

    ?><div class='options_group'><?php

        woocommerce_wp_text_input( array(
            'id'                => '_stock_multiplier',
            'label'             => __( 'Inventory reduction per quantity sold', 'woocommerce' ),
            'desc_tip'          => 'true',
            'description'       => __( 'Enter the quantity multiplier used for reducing stock levels when purchased.', 'woocommerce' ),
            'type'              => 'number',
            'custom_attributes' => array(
                'min'   => '1',
                'step'  => '1',
            ),
        ) );

    ?></div><?php

}
add_action( 'woocommerce_product_options_inventory_product_data', 'ace_add_stock_inventory_multiplier_setting' );

/**
 * Add variable setting.
 *
 * @param $loop
 * @param $variation_data
 * @param $variation
 */
function ace_add_variation_stock_inventory_multiplier_setting( $loop, $variation_data, $variation ) {

    $variation = wc_get_product( $variation );
    woocommerce_wp_text_input( array(
        'id'                => "stock_multiplier{$loop}",
        'name'              => "stock_multiplier[{$loop}]",
        'value'             => $variation->get_meta( '_stock_multiplier' ),
        'label'             => __( 'Inventory reduction per quantity sold', 'woocommerce' ),
        'desc_tip'          => 'true',
        'description'       => __( 'Enter the quantity multiplier used for reducing stock levels when purchased.', 'woocommerce' ),
        'type'              => 'number',
        'custom_attributes' => array(
            'min'   => '1',
            'step'  => '1',
        ),
    ) );

}
add_action( 'woocommerce_variation_options_pricing', 'ace_add_variation_stock_inventory_multiplier_setting', 50, 3 );

/**
 * Save the custom fields.
 *
 * @param WC_Product $product
 */
function ace_save_custom_stock_reduction_setting( $product ) {

    if ( ! empty( $_POST['_stock_multiplier'] ) ) {
        $product->update_meta_data( '_stock_multiplier', absint( $_POST['_stock_multiplier'] ) );
    }
}
add_action( 'woocommerce_admin_process_product_object', 'ace_save_custom_stock_reduction_setting'  );

/**
 * Save custom variable fields.
 *
 * @param int $variation_id
 * @param $i
 */
function ace_save_variable_custom_stock_reduction_setting( $variation_id, $i ) {
    $variation = wc_get_product( $variation_id );
    if ( ! empty( $_POST['stock_multiplier'] ) && ! empty( $_POST['stock_multiplier'][ $i ] ) ) {
        $variation->update_meta_data( '_stock_multiplier', absint( $_POST['stock_multiplier'][ $i ] ) );
        $variation->save();
    }
}
add_action( 'woocommerce_save_product_variation', 'ace_save_variable_custom_stock_reduction_setting', 10, 2 );

减少数量的代码如下:

// For implementation instructions see: https://aceplugins.com/how-to-add-a-code-snippet/

/**
 * Reduce with custom stock quantity based on the settings.
 *
 * @param $quantity
 * @param $order
 * @param $item
 * @return mixed
 */
function ace_custom_stock_reduction( $quantity, $order, $item ) {

    /** @var WC_Order_Item_Product $product */
    $multiplier = $item->get_product()->get_meta( '_stock_multiplier' );

    if ( empty( $multiplier ) && $item->get_product()->is_type( 'variation' ) ) {
        $product = wc_get_product( $item->get_product()->get_parent_id() );
        $multiplier = $product->get_meta( '_stock_multiplier' );
    }

    if ( ! empty( $multiplier ) ) {
        $quantity = $multiplier * $quantity;
    }

    return $quantity;
}
add_filter( 'woocommerce_order_item_quantity', 'ace_custom_stock_reduction', 10, 3 );

我试图做的是添加一个“如果”片段来检查数量

add_filter( ‘woocommerce_variation_is_active’, ‘my_jazzy_function’, 10, 2 );

function my_jazzy_function( $active, $variation ) {
    // Get Multiplier
    $multiplier = $item->get_product()->get_meta( '_stock_multiplier' );

    $var_stock_count = $variation->get_stock_quantity();

    // if there are 5 or less, disable the variant, could always just set to 0.
    if( $var_stock_count <= $multiplier ) {
        return false;
    }
    else {
        return true;
    }
}

但这不起作用，我认为它只检查变化数量(如果您将变化设置为自己的数量而不是全局数量)。
如何将总库存数量与新添加的设置进行比较 $multiplier ?
任何帮助都会很棒。

Answer 1

将总库存数量与新添加的设置进行比较 $multiplier

注释和解释添加到代码

function filter_woocommerce_variation_is_active( $active, $variation ) {    
    // Get multiplier
    $multiplier = get_post_meta( $variation->get_variation_id(), '_stock_multiplier', true );   
    
    // NOT empty
    if ( ! empty( $multiplier ) ) {
        // Get stock quantity
        $var_stock_count = $variation->get_stock_quantity();
        
        // Stock quantity < multiplier
        if( $var_stock_count < $multiplier ) {
            $active = false;
        }
    }
    
    return $active;
}
add_filter( 'woocommerce_variation_is_active', 'filter_woocommerce_variation_is_active', 10, 2 );