在 WooCommerce 电子邮件通知中显示多个分组的自定义字段

Question

我根据客户购买 1 件还是 2 件商品创建了一些自定义结帐字段。这些字段被称为：“Voorletters”、“Roepnaam”、“Achternaam”和“Geboortedatum”。 该代码有效，因为数据显示在我们的 WordPress 后端中相应订单的下方，但我们也希望将其包含在我们的电子邮件中。理想情况下，我们希望将其包含在客户成功付款后收到的订单已完成邮件中，以及管理员在新订单时收到的确认邮件中。

基于 在 WooCommerce 上添加多个自定义结帐字段，分组为两列答案代码，这就是我所拥有的：

// Utility function: Get specific product total cart item quantity
function get_specific_cart_item_quantity() {
    $targeted_id = 5027; // <== Product ID to check for.
    $item_qty    = 0; // Initializing

    // Loop through cart items
    foreach ( WC()->cart->get_cart() as $item ) {
        if ( $item['product_id'] == $targeted_id ) {
            $item_qty += $item['quantity'];
        }
    }
    return $item_qty;
}

// Add custom checkout fields
add_action('woocommerce_checkout_before_customer_details', 'add_custom_checkout_fields');
function add_custom_checkout_fields() {
    $item_qty = get_specific_cart_item_quantity();
    
    if ( $item_qty ) {
        $domain  = 'woocommerce';

        echo '<div id="custom_checkout_fields">
            <h3>' . __('<b>Persoonsgegevens BHV</b>', $domain) . '</h3>
            <p>' . __('Vul a.u.b. de persoonsgegevens van de BHV kandidaten in hieronder.', $domain) . '</p>
            <div class="custom-fields-container">';
        
        $qty1 = $item_qty % 2 == 0 ? $item_qty / 2 : ( $item_qty == 1 ? 1 : ($item_qty + 1) / 2 );
        $qty2 = $item_qty == 1 ? 1 : 2;

        // Multi-loop to display custom fields based on quantity in 2 columns
        for ( $k = 1; $k <= $qty1; $k++ ) {
            $qty2 = $item_qty % 2 != 0 && $k == $qty1 ? 1 : 2;

            // 2nd Loop (letters)
            foreach ( array('Voorletters', 'Roepnaam', 'Achternaam', 'Geboortedatum') as $letter ) {
                $key = strtolower($letter);

                // 3rd Loop (Columns)
                for ( $h = 1; $h <= $qty2; $h++ ) {
                    $class = $item_qty > 1 ? (($h % 2 == 0) ? 'last' : 'first' ) : 'wide';
                    $class = $item_qty % 2 != 0 && $k == $qty1 ? 'wide' : $class;

                    $index = $item_qty == 1 ? 1 : 2;
                    $index = in_array($class, ['first', 'wide']) ? ($k*2)-1 : $k*2;

                    $field = "custom_field_{$key}{$index}";
                    $label = sprintf('%s %d %s', __('Kandidaat', $domain), $index, $letter);
                
                    woocommerce_form_field( $field, array(
                        'type'          => 'text',
                        'label'         => $label,
                        'placeholder'   => '',
                        'class'         => array('custom-field form-row-'.$class),
                        'required'      => true, // or false
                    ), WC()->checkout->get_value( $field ) );
                }
            }
        }
        echo '</div></div>';
    }
}

// Validate custom fields
add_action( 'woocommerce_after_checkout_validation', 'validate_custom_checkout_fields', 10, 2 );
function validate_custom_checkout_fields( $data, $errors ) {
    if ( did_action('woocommerce_checkout_process') >= 2 ) return;

    $item_qty = get_specific_cart_item_quantity();

    if ( $item_qty ) {
        $domain   = 'woocommerce';
        $break    = false;

        // 1st Loop (Letters)
        foreach ( array('Voorletters', 'Roepnaam', 'Achternaam', 'Geboortedatum') as $letter ) {
            $key   = strtolower($letter);

            // 2nd Loop (Numbers)
            for ( $i = 1; $i <= $item_qty; $i++ ) {
                $field = "custom_field_{$key}{$i}";
                
                if ( isset($_POST[$field]) && empty($_POST[$field]) ) {
                    $errors->add( 'validation', __('Vul a.u.b. de verplichte velden in.', $domain), 'error' );
                    $break = true;
                    break;
                }
            }
            if ( $break ) break;
        }
    }
}

// Save custom field data as custom order meta data
add_action( 'woocommerce_checkout_create_order', 'save_custom_checkout_fields', 10, 2 );
function save_custom_checkout_fields( $order, $data ) {
    $item_qty = get_specific_cart_item_quantity();

    if ( $item_qty ) {
        // 1st Loop (Letters)
        foreach ( array('Voorletters', 'Roepnaam', 'Achternaam', 'Geboortedatum') as $letter ) {
            $key   = strtolower($letter);

            // 2nd Loop (Numbers)
            for ( $i = 1; $i <= $item_qty; $i++ ) {
                $field = "custom_field_{$key}{$i}";
                
                if ( isset($_POST[$field]) && ! empty($_POST[$field]) ) {
                    $order->update_meta_data( $field, sanitize_text_field($_POST[$field]) );
                }
            }
        }
    }
}

Answer 1

我已经重新审视了你的所有代码。以下将在管理员“新订单”和“客户完成订单”电子邮件通知中显示您的自定义字段数据：

// Utility function: Get specific product total cart item quantity
function get_specific_cart_item_quantity() {
    $targeted_id = 5027; // <== Product ID to check for.
    $item_qty    = 0; // Initializing

    // Loop through cart items
    foreach ( WC()->cart->get_cart() as $item ) {
        if ( $item['product_id'] == $targeted_id ) {
            $item_qty += $item['quantity'];
        }
    }
    return $item_qty;
}

// Utility function: Get participant fields labels
function get_candidate_fields_labels() {
    return array('Voorletters', 'Roepnaam', 'Achternaam', 'Geboortedatum');
}

// Add custom checkout fields
add_action('woocommerce_checkout_before_customer_details', 'add_custom_checkout_fields');
function add_custom_checkout_fields() {
    $item_qty = get_specific_cart_item_quantity();
    
    if ( $item_qty ) {
        $domain  = 'woocommerce';

        echo '<div id="custom_checkout_fields">
            <h3>' . __('<b>Persoonsgegevens BHV</b>', $domain) . '</h3>
            <p>' . __('Vul a.u.b. de persoonsgegevens van de BHV kandidaten in hieronder.', $domain) . '</p>
            <div class="custom-fields-container">';
        
        $qty1 = $item_qty % 2 == 0 ? $item_qty / 2 : ( $item_qty == 1 ? 1 : ($item_qty + 1) / 2 );
        $qty2 = $item_qty == 1 ? 1 : 2;

        // Multi-loop to display custom fields based on quantity in 2 columns
        for ( $k = 1; $k <= $qty1; $k++ ) {
            $qty2 = $item_qty % 2 != 0 && $k == $qty1 ? 1 : 2;

            // 2nd Loop (letters)
            foreach ( get_candidate_fields_labels() as $label ) {
                $key = strtolower($label);

                // 3rd Loop (Columns)
                for ( $h = 1; $h <= $qty2; $h++ ) {
                    $class = $item_qty > 1 ? (($h % 2 == 0) ? 'last' : 'first' ) : 'wide';
                    $class = $item_qty % 2 != 0 && $k == $qty1 ? 'wide' : $class;

                    $index = $item_qty == 1 ? 1 : 2;
                    $index = in_array($class, ['first', 'wide']) ? ($k*2)-1 : $k*2;

                    $field = "custom_field_{$key}{$index}";
                    $label = sprintf('%s %d %s', __('Kandidaat', $domain), $index, $label);
                
                    woocommerce_form_field( $field, array(
                        'type'          => 'text',
                        'label'         => $label,
                        'placeholder'   => '',
                        'class'         => array('custom-field form-row-'.$class),
                        'required'      => true, // or false
                    ), WC()->checkout->get_value( $field ) );
                }
            }
        }
        echo '</div></div>';
    }
}

// Validate custom fields
add_action( 'woocommerce_after_checkout_validation', 'validate_custom_checkout_fields', 10, 2 );
function validate_custom_checkout_fields( $data, $errors ) {
    if ( did_action('woocommerce_checkout_process') >= 2 ) return;

    $item_qty = get_specific_cart_item_quantity();

    if ( $item_qty ) {
        $domain   = 'woocommerce';
        $break    = false;

        // 1st Loop (Letters)
        foreach ( get_candidate_fields_labels() as $label ) {
            $key   = strtolower($label);

            // 2nd Loop (Numbers)
            for ( $i = 1; $i <= $item_qty; $i++ ) {
                $field = "custom_field_{$key}{$i}";
                
                if ( isset($_POST[$field]) && empty($_POST[$field]) ) {
                    $errors->add( 'validation', __('Vul a.u.b. de verplichte velden in.', $domain), 'error' );
                    $break = true;
                    break;
                }
            }
            if ( $break ) break;
        }
    }
}

// Save custom field data as custom order meta data
add_action( 'woocommerce_checkout_create_order', 'save_custom_checkout_fields', 10, 2 );
function save_custom_checkout_fields( $order, $data ) {
    $item_qty = get_specific_cart_item_quantity();

    if ( $item_qty ) {
        // 1st Loop (Letters)
        foreach ( get_candidate_fields_labels() as $label ) {
            $key   = strtolower($label);

            // 2nd Loop (Numbers)
            for ( $i = 1; $i <= $item_qty; $i++ ) {
                $field = "custom_field_{$key}{$i}";
                
                if ( isset($_POST[$field]) && ! empty($_POST[$field]) ) {
                    $order->update_meta_data( $field, sanitize_text_field($_POST[$field]) );
                }
            }
        }
        $order->update_meta_data( 'participants', $item_qty ); // Add the number of participants
    }
}

// Display custom fields data on email notifications
add_action( 'woocommerce_email_order_details', 'display_on_email_notifications', 20, 4 );
function display_on_email_notifications( $order, $sent_to_admin, $plain_text, $email ) {
    $item_qty = $order->get_meta('participants');

    // Targeting "New order" and "Customer completed order" email notifications
    if ( $item_qty > 0 && in_array($email->id, ['new_order','customer_completed_order']) ) {
        $domain  = 'woocommerce';

        echo '<style>
        .personal-info table{width: 100%; font-family: \'Helvetica Neue\', Helvetica, Roboto, Arial, sans-serif;
            color: #737373; border: 1px solid #e4e4e4; margin-bottom:8px;}
        .personal-info table th, .personal-info table td{text-align: left; border-top-width: 4px; color: #737373; 
            border: 1px solid #e4e4e4; padding: 12px; width:'.($item_qty == 1 ? '100%' : '50%').';}
        .personal-info table td h4{font-size:92%; margin-block-start: 0; margin-block-end: 1em;}
        .personal-info table td p{font-size:84%; line-height:20px; margin:0 !important;}
        </style>';

        echo '<div class="personal-info">
            <h3>' . __('<b>Persoonsgegevens BHV</b>', $domain) . '</h3>
            <p>' . __('Vul a.u.b. de persoonsgegevens van de BHV kandidaten in hieronder.', $domain) . '</p>
            <table cellspacing="0" cellpadding="6"><tbody>
            <tr>';
        
        for ( $i = 1; $i <= $item_qty; $i++ ) {
            echo '<td>';
            printf('<h4>%s %d</h4><p>', __('Kandidaat', $domain), $i);
            // 2nd Loop (letters)
            foreach ( get_candidate_fields_labels() as $label ) {
                $key   = strtolower($label);
                $field = "custom_field_{$key}{$i}";
                printf('<strong>%s:</strong> %s<br>', $label, $order->get_meta($field));
            }
            echo '</p></td>';
            echo $i % 2 == 0 && $i < $item_qty ? '</tr><tr>' : '';
            echo $item_qty % 2 != 0 && $i == $item_qty ? '<td><h4>&nbsp;</h4><p>&nbsp;</p></td>' : '';
        }
        echo '</tr></tbody></table></div><br>';
    }
}

参与者自定义字段数据将显示在 2 列中，有点像结帐时。

代码位于子主题的functions.php 文件中（或插件中）。已测试并有效。