在 WooCommerce 的订单编辑页面上显示自定义字段

Question

基于 "" 对我之前的一个问题的回答，该代码在产品编辑页面上显示了自定义字段。填写这些字段后，数据将显示在产品页面上。

代码如下：

// Backend: Display additional product fields
add_action('woocommerce_product_options_general_product_data', 'add_fields_to_options_general_product_data');

function add_fields_to_options_general_product_data() {
    // Custom Weight Field
    woocommerce_wp_text_input(array(
            'id' => '_custom_weight',
            'label' => __('Weight dishes', 'woocommerce'),
    ));

    // Calories Field
    woocommerce_wp_text_input(array(
            'id' => '_сalories',
            'label' => __('Calories', 'woocommerce'),
    ));

    // Ingredients Field
    woocommerce_wp_textarea_input(array(
            'id' => '_ingredients',
            'label' => __('Ingredients', 'woocommerce'),
    ));
}

// Backend: Save the data value from the custom fields
add_action('woocommerce_admin_process_product_object', 'save_admin_product_custom_fields_values');

function save_admin_product_custom_fields_values($product) {
    // Save Custom Weight Field
    if (isset($_POST['_custom_weight'])) {
            $product->update_meta_data('_custom_weight', sanitize_text_field($_POST['_custom_weight']));
    }

    // Save Calories Field
    if (isset($_POST['_сalories'])) {
            $product->update_meta_data('_сalories', sanitize_text_field($_POST['_сalories']));
    }

    // Save Ingredients Field
    if (isset($_POST['_ingredients'])) {
            $product->update_meta_data('_ingredients', sanitize_textarea_field($_POST['_ingredients']));
    }
}

// Display product custom fields values on single product pages under short description and on archive pages
add_action('woocommerce_before_add_to_cart_form', 'display_custom_meta_field_value', 25);
add_action('woocommerce_after_shop_loop_item', 'display_custom_meta_field_value', 25);

function display_custom_meta_field_value() {
    global $product;

    if ($custom_weight = $product->get_meta('_custom_weight'))
            echo '<p id="value-on-single-product">'.__("Weight:", "woocommerce").
    ' '.$custom_weight.
    'g'.
    '</p>';

    if ($сalories = $product->get_meta('_сalories'))
            echo '<p id="value-on-single-product">'.__("Calories:", "woocommerce").
    ' '.$сalories.
    ' kcal.'.
    '</p>';

    if ($ingredients = $product->get_meta('_ingredients'))
            echo '<p id="value-on-single-product">'.__("Ingredients:", "woocommerce").
    ' '.$ingredients.
    '</p>';
}

// Add custom fields values under cart item name in cart
add_filter('woocommerce_cart_item_name', 'custom_cart_item_name', 10, 3);

function custom_cart_item_name($item_name, $cart_item, $cart_item_key) {
    if (!is_cart())
            return $item_name;

    if ($value1 = $cart_item['data']->get_meta('_custom_weight')) {
            $item_name. = '<br><span class="custom-field"><strong>'.__("Weight", "woocommerce").
            ':</strong> '.$value1.
            'g</span>';
    }

    if ($value2 = $cart_item['data']->get_meta('_сalories')) {
            $item_name. = '<br><span class="custom-field"><strong>'.__("Calories", "woocommerce").
            ':</strong> '.$value2.
            'kcal</span>';
    }

    if ($value3 = $cart_item['data']->get_meta('_ingredients')) {
            $item_name. = '<br><span class="custom-field"><strong>'.__("Ingredients", "woocommerce").
            ':</strong> <br>'.$value3.
            '</span>';
    }

    return $item_name;
}

// Display custom fields values on orders and email notifications
add_filter('woocommerce_order_item_name', 'custom_order_item_name', 10, 2);

function custom_order_item_name($item_name, $item) {
    $product = $item - > get_product();

    if ($value1 = $product->get_meta('_custom_weight')) {
            $item_name. = '<br><span class="custom-field"><strong>'.__("Weight", "woocommerce").
            ':</strong> '.$value1.
            'g</span>';
    }

    if ($value2 = $product->get_meta('_сalories')) {
            $item_name. = '<br><span class="custom-field"><strong>'.__("Calories", "woocommerce").
            ':</strong> '.$value2.
            'kcal</span>';
    }

    if ($value3 = $product->get_meta('_ingredients')) {
            $item_name. = '<br><span class="custom-field"><strong>'.__("Ingredients", "woocommerce").
            ':</strong> <br>'.$value3.
            '</span>';
    }

    return $item_name;
}

如何在管理面板的编辑订单页面显示自定义字段？应该在产品名称后显示这些字段。

更新

据我了解，woocommerce_checkout_create_order_line_item对此负责。但我无法添加正确的代码。我请求你的帮助！

// Save chosen slelect field value to each order item as custom meta data and display it everywhere
add_action('woocommerce_checkout_create_order_line_item', 'save_order_item_product', 10, 4 );
function save_order_item_product( $item, $cart_item_key, $values, $order ) {
    $product = $item->get_product();

    if( $value1 = $product->get_meta('_custom_weight') ) {
        $item_name .= '<br /><span class="custom-field"><strong>' . __("Weight dishes", "woocommerce") . ':</strong> ' . $value1 . ' g</span>';
    }
    return $item_name;
}

或

// Save chosen slelect field value to each order item as custom meta data and display it everywhere
add_action('woocommerce_checkout_create_order_line_item', 'save_order_item_product', 10, 4 );
function save_order_item_product( $item, $cart_item_key, $values, $order ) {
    if( isset($values['_custom_weight']) ) {
        $key = __('Weight dishes', 'woocommerce');
        $value = $values['_custom_weight'];
        $item->update_meta_data( $key, $value );
    }
}

Answer 1

以下是在管理员订单项上显示产品自定义字段的方法：

add_action( 'woocommerce_before_order_itemmeta', 'add_admin_order_item_custom_fields', 10, 2 );
function add_admin_order_item_custom_fields( $item_id, $item ) {
    // Targeting line items type only
    if( $item->get_type() !== 'line_item' ) return;

    $product = $item-> get_product();
    $value1  = $product->get_meta('_custom_weight');
    $value2  = $product->get_meta('_сalories');
    $value3  = $product->get_meta('_ingredients');

    if ( ! empty($value1) || ! empty($value2) || ! empty($value3) ) {
        echo '<table cellspacing="0" class="display_meta">';

        if ( ! empty($value1) ) {
            echo '<tr><th>' . __("Weight", "woocommerce") . ':</th><td>' . $value1 . 'g</td></tr>';
        }

        if ( ! empty($value2) ) {
            echo '<tr><th>' . __("Calories", "woocommerce") . ':</th><td>' . $value2 . 'kcal</td></tr>';
        }

        if ( ! empty($value3) ) {
            echo '<tr><th>' . __("Ingredients", "woocommerce") . ':</th><td>' . $value3 . '</td></tr>';
        }
        echo '</table>';
    }
}

代码进入您的活动子主题（或活动主题）的 functions.php 文件。测试和工作。

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