取消設置專門定義的產品類別購物車項目的結帳結算字段

Question

僅當我從指定類別購買某些產品時，我需要顯示此自定義字段。那麼只需要這些字段。

下面的代碼只是設置爲顯示：沒有字段，事實上，如果我點擊檢出有一個像「字段myfield是必需的」的錯誤，但我需要刪除我的字段不設置顯示無。

請問有什麼想法？

我有最新版本的WooCommerce。

這是我的代碼：

/** 
* Add the field to the checkout 
*/ 
add_filter('woocommerce_checkout_fields' , 'custom_override_checkout_fields'); 

// Our hooked in function - $fields is passed via the filter! 
function custom_override_checkout_fields($fields) { 
    $fields['billing']['my_field_name'] = array(
    'label'  => __('Codice medico', 'woocommerce'), 
    'placeholder' => _x('Inserisci il codice del tuo medico', 'placeholder', 'woocommerce'), 
    'required' => true, 
    'class'  => array('form-row-wide'), 
    'clear'  => true 
    ); 

    return $fields; 
} 

/** 
* Process the checkout 
*/ 
add_action('woocommerce_checkout_process', 'my_custom_checkout_field_process'); 

function my_custom_checkout_field_process() { 
    // Check if set, if its not set add an error. 
    if (! $_POST['my_field_name']) 
     wc_add_notice(__('<h4 style="color:red;">Stai acquistando un prodotto per cui è necessaria la prescrizione medica. Per favore inserisci il codice del tuo medico per proseguire. Grazie.</h4>'), 'error'); 
} 

/** 
* Update the order meta with field value 
*/ 
add_action('woocommerce_checkout_update_order_meta', 'my_custom_checkout_field_update_order_meta'); 

function my_custom_checkout_field_update_order_meta($order_id) { 
    if (! empty($_POST['my_field_name'])) { 
     update_post_meta($order_id, 'Codice Medico', sanitize_text_field($_POST['my_field_name'])); 
    } 
} 

/** 
* Display field value on the order edit page 
*/ 
add_action('woocommerce_admin_order_data_after_billing_address', 'my_custom_checkout_field_display_admin_order_meta', 10, 1); 

function my_custom_checkout_field_display_admin_order_meta($order){ 
    echo '<p><strong>'.__('Codice Medico').':</strong> ' . get_post_meta($order->id, 'Codice Medico', true) . '</p>'; 
} 

/* Adding Custom Fields to Emails 
1. Add this snippet to your theme's functions.php file 
2. Change the meta key names in the snippet 
3. Create a custom field in the order post - e.g. key = "Tracking Code" value = abcdefg 
4. When next updating the status, or during any other event which emails the user, they will see this field in their email 
*/ 
add_filter('woocommerce_email_order_meta_keys', 'my_custom_order_meta_keys'); 

function my_custom_order_meta_keys($keys) { 
    $keys[] = 'Codice Medico'; // This will look for a custom field called 'Tracking Code' and add it to emails 
    return $keys; 
} 


/** 
* Conditionally remove checkout fields 
*/ 
add_filter('woocommerce_checkout_fields' , 'conditional_unset_checkout_field'); 
function conditional_unset_checkout_field($fields) { 

    $categories = array('prodotti-in-polvere-e-bustine', 'gel-e-creme', 'prodotti-in-capsule', 'prodotti-plantari', 'prodotti-liquidi', 'area-riservata'); 
    $has_cat = false; 

    // Iterating through each cart items (products) 
    foreach(WC()->cart->get_cart() as $cart_item){ 

     // Iterating through each category in your array 
     foreach($categories as $category){ 

      if (has_term($category, 'product_cat', $cart_item['product_id'])) { 
       $has_cat = true; 
       break; 
      } 
     } 
     if ($has_cat) break; 
    } 

    // If one of the categories is in one cart item, we unset the field 
    if ($has_cat) { 
     unset($fields['billing']['my_field_name']); 
    } 
    return $fields; 
} 

Answer 1

要取消該領域唯一的，如果有在車中的項目定義的類別，不若也有另一種類別，如你所需。

第一：您正在使用這裏的工作我的回答代碼到你昨天的問題：

Remove a checkout field if cart items are from some specific product categories

你沒有在這裏提到它。

之後，我已經測試你的代碼（有一些未成年人修改）on this test server和它的工作如預期完美！如果您添加「海報」類別的商店「飛行忍者」的第一個產品，您的自定義結賬區域將根據需要刪除...如果您從購物車中刪除「飛行忍者」，並添加了第二個產品「Happy忍者」是不是在‘海報’類別，您的自定義字段將再次顯示...

那是你的淡然改變的代碼：

/** 
* Add the field to the checkout 
*/ 
add_filter('woocommerce_checkout_fields' , 'custom_override_checkout_fields'); 

// Our hooked in function - $fields is passed via the filter! 
function custom_override_checkout_fields($fields) { 
    $fields['billing']['my_field_name'] = array(
     'label'  => __('Codice medico', 'woocommerce'), 
     'placeholder' => _x('Inserisci il codice del tuo medico', 'placeholder', 'woocommerce'), 
     'required' => true, 
     'class'  => array('form-row-wide'), 
     'clear'  => true 
    ); 

    return $fields; 
} 

/** 
* Process the checkout 
*/ 
add_action('woocommerce_checkout_process', 'custom_checkout_field_process'); 

function custom_checkout_field_process() { 
    // Check if set, if its not set add an error. 
    if (! $_POST['my_field_name']) 
     wc_add_notice(__('<h4 style="color:red;">Stai acquistando un prodotto per cui è necessaria la prescrizione medica. Per favore inserisci il codice del tuo medico per proseguire. Grazie.</h4>'), 'error'); 
} 

/** 
* Update the order meta with field value 
*/ 
add_action('woocommerce_checkout_update_order_meta', 'custom_checkout_field_update_order_meta'); 

function custom_checkout_field_update_order_meta($order_id) { 
    $my_field_name = $_POST['my_field_name']; 
    if (!empty($my_field_name)) 
     update_post_meta($order_id, 'Codice Medico', sanitize_text_field($my_field_name)); 
} 

/** 
* Display field value on the order edit page 
*/ 
add_action('woocommerce_admin_order_data_after_billing_address', 'display_custom_checkout_field_in_admin_order_meta', 10, 1); 

function display_custom_checkout_field_in_admin_order_meta($order){ 
    echo '<p><strong>'.__('Codice Medico').':</strong> ' . get_post_meta($order->id, 'Codice Medico', true) . '</p>'; 
} 

/** 
* Conditionally remove checkout fields 
*/ 
add_filter('woocommerce_checkout_fields' , 'conditional_unset_checkout_field'); 
function conditional_unset_checkout_field($fields) { 

    $categories = array('prodotti-in-polvere-e-bustine', 'gel-e-creme', 'prodotti-in-capsule', 'prodotti-plantari', 'prodotti-liquidi', 'area-riservata', 'posters'); 
    $has_cat = false; 
    $has_other_cat = false; 

    // Iterating through each cart items (products) 
    foreach(WC()->cart->get_cart() as $cart_item){ 
     // Getting the item product categories 
     $item_categories = wp_get_post_terms($cart_item['product_id'], 'product_cat'); 
     foreach($item_categories as $item_category){ 
      if(in_array($item_category->slug, $categories)) 
       $has_cat = true; 
      else 
       $has_other_cat = true; 
     } 
    } 

    // If one of your defined categories is in the cart item 
    // and not the others categories, we unset the field 
    if ($has_cat && !$has_other_cat) { 
     unset($fields['billing']['my_field_name']); 
    } 
    return $fields; 
}