在购物车和订单项目名称下显示 woocommerce 产品自定义字段

Question

我有一个代码在产品编辑页面的“常规”标签中显示自定义字段。

经理填写完这些字段后，数据将显示在存档/类别页面和单个产品页面中。

此外，这些字段位于购物车和结帐页面上。

这是我的代码：

// Display Fields using WooCommerce Action Hook
add_action( 'woocommerce_product_options_general_product_data', 'woocom_general_product_data_custom_field' );

function woocom_general_product_data_custom_field() {
  // Create a custom text field

  // Custom Weight Field
  woocommerce_wp_text_input( 
    array( 
      'id' => '_custom_weight', 
      'label' => __( 'Weight dishes', 'woocommerce' ), 
      'placeholder' => '',
      'desc_tip' => 'true',
      'description' => __( '', 'woocommerce' ) 
    )
  );     

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

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

// Hook to save the data value from the custom fields
add_action( 'woocommerce_process_product_meta', 'woocom_save_general_proddata_custom_field' );

// Hook callback function to save custom fields information 
function woocom_save_general_proddata_custom_field( $post_id ) {

  // Save Custom Weight Field
  $custom_weight = $_POST['_custom_weight'];
  if( ! empty( $custom_weight ) ) {
     update_post_meta( $post_id, '_custom_weight', esc_attr( $custom_weight ) );
  } else {
     delete_post_meta( $post_id, '_custom_weight' );
  }      

  // Save Calories Field
  $сalories = $_POST['_сalories'];
  if( ! empty( $сalories ) ) {
     update_post_meta( $post_id, '_сalories', esc_attr( $сalories ) );
  } else {
     delete_post_meta( $post_id, '_сalories' );
  }   

  // Save Ingredients Field
  $ingredients = $_POST['_ingredients'];
  if( ! empty( $ingredients ) ) {
     update_post_meta( $post_id, '_ingredients', esc_html( $ingredients ) );
 } else {
     delete_post_meta( $post_id, '_ingredients' );
  }                 

}

// Displaying the custom field value (on single product pages under short description)
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;

$custom_weight = get_post_meta( $product->get_id(),'_custom_weight', true );
if( ! empty( $custom_weight ) )
    echo  '<p id="value-on-single-product">' . 'Weight: ' . $custom_weight . 'g' . '</p>';

$сalories = get_post_meta( $product->get_id(),'_сalories', true );
if( ! empty( $сalories ) )
    echo  '<p id="value-on-single-product">' . 'Calories: ' . $сalories . ' kcal.' . '</p>';

$ingredients = get_post_meta( $product->get_id(),'_ingredients', true );
if( ! empty( $ingredients ) )
    echo '<p id="value-on-single-product">' . 'Ingredients: ' . $ingredients . '</p>';
}


// Render the custom product field in cart and checkout
add_filter( 'woocommerce_get_item_data', 'woocom_custom_fields_cart', 10, 2 );
function woocom_custom_fields_cart( $cart_data, $cart_item ) 
{
    $custom_items = array();

if( !empty( $cart_data ) )
    $custom_items = $cart_data;

// Get the product ID
$product_id = $cart_item['product_id'];

if( $custom_field_value = get_post_meta( $product_id, '_custom_weight', true ) )
    $custom_items[] = array(
        'name'      => __( 'Weight', 'woocommerce' ),
        'value'     => $custom_field_value,
        'display'   => $custom_field_value . 'g',
    );

return $custom_items;
}

但不幸的是，我无法在感谢页面、电子邮件和订单编辑页面的产品名称之后添加这些自定义字段。

我也怀疑上面的代码是否正确，虽然一切正常。

我会很高兴得到您的帮助！

Answer 1

我重新访问了您的代码并进行了一些更改，添加了必要的代码以在购物车、结帐、收到的订单、我的帐户订单视图和电子邮件通知中显示您的自定义字段数据（对于 Woocommerce 3+） em>：

// 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 under item name in checkout
add_filter( 'woocommerce_checkout_cart_item_quantity', 'custom_checkout_cart_item_name', 10, 3 );
function custom_checkout_cart_item_name( $item_qty, $cart_item, $cart_item_key ) {
    if( $value1 = $cart_item['data']->get_meta('_custom_weight') ) {
        $item_qty .= '<br><span class="custom-field"><strong>' . __("Weight", "woocommerce") . ':</strong> ' . $value1 . 'g</span>';
    }

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

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

    return $item_qty;
}

// 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;
}

代码在您的活动子主题（或活动主题）的 function.php 文件中。经过测试并且可以工作。

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在购物车页面上：

结帐页面：

在收到订单的页面上：

关于电子邮件通知：