//.........这里部分代码省略.........
								</div>

								<div class="form-field">
									<label for="attribute_name"><?php 
        _e('Slug', 'woocommerce');
        ?>
</label>
									<input name="attribute_name" id="attribute_name" type="text" value="" maxlength="28" />
									<p class="description"><?php 
        _e('Unique slug/reference for the attribute; must be shorter than 28 characters.', 'woocommerce');
        ?>
</p>
								</div>

								<div class="form-field">
									<label for="attribute_public"><input name="attribute_public" id="attribute_public" type="checkbox" value="1" /> <?php 
        _e('Enable Archives?', 'woocommerce');
        ?>
</label>

									<p class="description"><?php 
        _e('Enable this if you want this attribute to have product archives in your store.', 'woocommerce');
        ?>
</p>
								</div>

								<div class="form-field">
									<label for="attribute_type"><?php 
        _e('Type', 'woocommerce');
        ?>
</label>
									<select name="attribute_type" id="attribute_type">
										<?php 
        foreach (wc_get_attribute_types() as $key => $value) {
            ?>
											<option value="<?php 
            echo esc_attr($key);
            ?>
"><?php 
            echo esc_attr($value);
            ?>
</option>
										<?php 
        }
        ?>

										<?php 
        /**
         * Deprecated action in favor of product_attributes_type_selector filter
         *
         * @deprecated 2.4.0
         */
        do_action('woocommerce_admin_attribute_types');
        ?>
									</select>
									<p class="description"><?php 
        _e('Determines how you select attributes for products. Under admin panel -> products -> product data -> attributes -> values, <strong>Text</strong> allows manual entry whereas <strong>select</strong> allows pre-configured terms in a drop-down list.', 'woocommerce');
        ?>
</p>
								</div>

								<div class="form-field">
									<label for="attribute_orderby"><?php 
        _e('Default sort order', 'woocommerce');
        ?>
</label>

 /**
  * Validate attribute data.
  *
  * @since  2.4.0
  * @param  string $name
  * @param  string $slug
  * @param  string $type
  * @param  string $order_by
  * @param  bool   $new_data
  * @return bool
  */
 protected function validate_attribute_data($name, $slug, $type, $order_by, $new_data = true)
 {
     if (empty($name)) {
         throw new WC_API_Exception('woocommerce_api_missing_product_attribute_name', sprintf(__('Missing parameter %s', 'woocommerce'), 'name'), 400);
     }
     if (strlen($slug) >= 28) {
         throw new WC_API_Exception('woocommerce_api_invalid_product_attribute_slug_too_long', sprintf(__('Slug "%s" is too long (28 characters max). Shorten it, please.', 'woocommerce'), $slug), 400);
     } else {
         if (wc_check_if_attribute_name_is_reserved($slug)) {
             throw new WC_API_Exception('woocommerce_api_invalid_product_attribute_slug_reserved_name', sprintf(__('Slug "%s" is not allowed because it is a reserved term. Change it, please.', 'woocommerce'), $slug), 400);
         } else {
             if ($new_data && taxonomy_exists(wc_attribute_taxonomy_name($slug))) {
                 throw new WC_API_Exception('woocommerce_api_invalid_product_attribute_slug_already_exists', sprintf(__('Slug "%s" is already in use. Change it, please.', 'woocommerce'), $slug), 400);
             }
         }
     }
     // Validate the attribute type
     if (!in_array(wc_clean($type), array_keys(wc_get_attribute_types()))) {
         throw new WC_API_Exception('woocommerce_api_invalid_product_attribute_type', sprintf(__('Invalid product attribute type - the product attribute type must be any of these: %s', 'woocommerce'), implode(', ', array_keys(wc_get_attribute_types()))), 400);
     }
     // Validate the attribute order by
     if (!in_array(wc_clean($order_by), array('menu_order', 'name', 'name_num', 'id'))) {
         throw new WC_API_Exception('woocommerce_api_invalid_product_attribute_order_by', sprintf(__('Invalid product attribute order_by type - the product attribute order_by type must be any of these: %s', 'woocommerce'), implode(', ', array('menu_order', 'name', 'name_num', 'id'))), 400);
     }
     return true;
 }

 /**
  * Get the Attribute's schema, conforming to JSON Schema.
  *
  * @return array
  */
 public function get_item_schema()
 {
     $schema = array('$schema' => 'http://json-schema.org/draft-04/schema#', 'title' => 'product_attribute', 'type' => 'object', 'properties' => array('id' => array('description' => __('Unique identifier for the resource.', 'woocommerce'), 'type' => 'integer', 'context' => array('view', 'edit'), 'readonly' => true), 'name' => array('description' => __('Attribute name.', 'woocommerce'), 'type' => 'string', 'context' => array('view', 'edit'), 'arg_options' => array('sanitize_callback' => 'sanitize_text_field')), 'slug' => array('description' => __('An alphanumeric identifier for the resource unique to its type.', 'woocommerce'), 'type' => 'string', 'context' => array('view', 'edit'), 'arg_options' => array('sanitize_callback' => 'sanitize_title')), 'type' => array('description' => __('Type of attribute.', 'woocommerce'), 'type' => 'string', 'default' => 'select', 'enum' => array_keys(wc_get_attribute_types()), 'context' => array('view', 'edit')), 'order_by' => array('description' => __('Default sort order.', 'woocommerce'), 'type' => 'string', 'default' => 'menu_order', 'enum' => array('menu_order', 'name', 'name_num', 'id'), 'context' => array('view', 'edit')), 'has_archives' => array('description' => __('Enable/Disable attribute archives.', 'woocommerce'), 'type' => 'boolean', 'default' => false, 'context' => array('view', 'edit'))));
     return $this->add_additional_fields_schema($schema);
 }