为 WooCommerce 简单产品启用自定义变体定价选项

Question

我目前有一些基于用户角色的自定义定价，适用于可变产品。

这是我用来让它工作的代码：

    // Add custom fields to variations option pricing
add_action( 'woocommerce_variation_options_pricing', 'add_variation_options_pricing', 20, 3 );
function add_variation_options_pricing( $loop, $variation_data, $post_variation )
{
    $value1  = get_post_meta( $post_variation->ID, '_food_price', true );
    $value2  = get_post_meta( $post_variation->ID, '_hot_food_price', true );
    $value3  = get_post_meta( $post_variation->ID, '_general_price', true );

    $symbol = ' (' . get_woocommerce_currency_symbol() . ')';

    $key_1 = '_food_price[' . $loop . ']';
    $key_2 = '_hot_food_price[' . $loop . ']';
    $key_3 = '_general_price[' . $loop . ']';

    // General
    echo '<div class="variable_general-price"><p class="form-row form-row-first">
        <label>' . __( "General", "woocommerce" ) . $symbol . '</label>
        <input type="text" size="5" name="' . $key_3 .'" value="' . esc_attr( $value3 ) . '" />
    </p></div>';

    // Food
    echo '<div class="variable_food-price"><p class="form-row form-row-first">
        <label>' . __( "Food", "woocommerce" ) . $symbol . '</label>
        <input type="text" size="5" name="' . $key_1 .'" value="' . esc_attr( $value1 ) . '" />
    </p></div>';

    // Hot Food
    echo '<div class="variable_hot-food-price"><p class="form-row form-row-first">
        <label>' . __( "Hot Food", "woocommerce" ) . $symbol . '</label>
        <input type="text" size="5" name="' . $key_2 .'" value="' . esc_attr( $value2 ) . '" />
    </p></div>';
}


// Save variations prices custom fields values
add_action( 'woocommerce_save_product_variation', 'save_product_variation_price', 20, 2 );
function save_product_variation_price( $variation_id, $i )
{
    if ( isset( $_POST['_food_price'][$i] ) )
    {
        update_post_meta( $variation_id, '_food_price', floatval( $_POST['_food_price'][$i] ) );
    }

    if ( isset( $_POST['_hot_food_price'][$i] ) )
    {
        update_post_meta( $variation_id, '_hot_food_price', floatval( $_POST['_hot_food_price'][$i] ) );
    }

    if ( isset( $_POST['_general_price'][$i] ) )
    {
        update_post_meta( $variation_id, '_general_price', floatval( $_POST['_general_price'][$i] ) );
    }
}


// Variable product price range
add_filter('woocommerce_variation_prices_price', 'variation_price', 900, 2 );

// Product variations (of a variable product)
add_filter('woocommerce_product_variation_get_price', 'variation_price', 900, 2 );
function variation_price( $price, $object )
{
    if( is_user_logged_in() ) {
        // Hot Food User
        if ( current_user_can( 'stallholder') && current_user_can( 'hot_food' ) ) {
            $new_price = (float) get_post_meta( $object->get_id(), '_hot_food_price', true );
            $price     = empty($new_price) ? $price : $new_price;
        }
        // Food User
        elseif ( current_user_can( 'stallholder') && current_user_can( 'food' ) ){
            $new_price = (float) get_post_meta( $object->get_id(), '_food_price', true );
            $price     = empty($new_price) ? $price : $new_price;
        }
        // General User
        else {
            $new_price = (float) get_post_meta( $object->get_id(), '_general_price', true );
            $price     = empty($new_price) ? $price : $new_price;
        }
    }
    return $price;
}

我现在想对简单的产品执行相同的操作，并在此处添加这些字段。

我现在尝试研究将这些字段添加到我需要的地方，但是却一片空白。

感谢任何帮助。谢谢。

Answer 1

首先，自 WooCommerce 3 以来，您的代码有点过时了……以下内容适用于简单的产品和产品变体：

// Utility function: Array of fields key / Label pairs
function get_custom_pricing_data_fields() {
    return array(
        '_general_price'    => esc_html('General price', 'woocommerce'),
        '_food_price'       => esc_html('Food price', 'woocommerce'),
        '_hot_food_price'   => esc_html('Hot Food price', 'woocommerce')
    );
}

// Add custom field to simple product option pricing
add_action( 'woocommerce_product_options_pricing', 'add_product_custom_options_pricing' );
function add_product_custom_options_pricing()
{
    echo '<div class="hide_if_variable">';

    // Loop through pricing data fields array
    foreach ( get_custom_pricing_data_fields() as $key => $label ) {

        woocommerce_wp_text_input( array(
            'id'        => $key,
            'class'     => "wc_input_price short",
            'label'     => $label .' (' . get_woocommerce_currency_symbol() . ')',
            'data_type' => 'price'
        ));
    }
    echo '</div>';
}

// Add custom fields to variations option pricing
add_action( 'woocommerce_variation_options_pricing', 'add_variation_custom_options_pricing', 20, 3 );
function add_variation_custom_options_pricing( $loop, $variation_data, $variation )
{
    $variation_object  = wc_get_product($variation->ID);

    // Loop through pricing data fields array
    foreach ( get_custom_pricing_data_fields() as $key => $label ) {

        woocommerce_wp_text_input(
            array(
                'id'            => $key . $loop,
                'name'          => "{$key}[{$loop}]",
                'value'         => wc_format_localized_price( $variation_object->get_meta( $key ) ),
                'label'         => $label . ' (' . get_woocommerce_currency_symbol() . ')',
                'data_type'     => 'price',
                'wrapper_class' => 'form-row form-row-wide',
                'placeholder'   => $label . __( ' (required)', 'woocommerce' ),
            )
        ); /*
  
        printf( '<div class="variable%s"><p class="form-row form-row-wide"><label>%s</label>
            <input type="text" size="5" name="%s[%d]" value="%s" /></p></div>', 
        $key, $label . $currency_symbol, $key, $loop, $variation_object->get_meta($key) ); */
    }
}

// Save simple product option pricing custom fields values
add_action( 'woocommerce_admin_process_product_object', 'save_simple_product_custom_prices', 20 );
function save_simple_product_custom_prices( $product )
{
    // Loop through pricing data fields array
    foreach ( get_custom_pricing_data_fields() as $key => $label ) {
        if ( isset( $_POST[$key] ) ) {
            $product->update_meta_data( $key, wc_clean( wp_unslash( $_POST[$key] ) ) );
        }
    }
}

// Save variation option pricing custom fields values
add_action( 'woocommerce_admin_process_variation_object', 'save_product_variation_custom_prices', 20, 2 );
function save_product_variation_custom_prices( $variation, $i )
{
    // Loop through pricing data fields array
    foreach ( get_custom_pricing_data_fields() as $key => $label ) {
        if ( isset( $_POST[$key][$i] ) ) {
            $variation->update_meta_data($key, wc_clean( wp_unslash( $_POST[$key][$i]) ) );
        }
    }
}

// Variable product price range
add_filter('woocommerce_variation_prices_price', 'display_custom_price', 900, 2 );

// Product variations (of a variable product)
add_filter('woocommerce_product_variation_get_price', 'display_custom_price', 900, 2 );

// Simple product
add_filter('woocommerce_product_get_price', 'display_custom_price', 900, 2 );
function display_custom_price( $price, $product )
{
    if( is_user_logged_in() ) {
        // Hot Food User
        if ( wc_current_user_has_role( 'stallholder') && wc_current_user_has_role( 'hot_food' ) ) {
            $new_price = (float) $product->get_meta('_hot_food_price');
            $price     = empty($new_price) ? $price : $new_price;
        }
        // Food User
        elseif ( wc_current_user_has_role( 'stallholder') && wc_current_user_has_role( 'food' ) ){
            $new_price = (float) $product->get_meta('_food_price');
            $price     = empty($new_price) ? $price : $new_price;
        }
        // General User
        else {
            $new_price = (float) $product->get_meta('_general_price');
            $price     = empty($new_price) ? $price : $new_price;
        }
    }
    return $price;
}

代码位于子主题的functions.php文件中（或插件中）。