PHP WC_Product::get_stock_quantity方法代码示例

 /**
  * Get standard product data that applies to every product type
  *
  * @since 2.1
  * @param WC_Product $product
  * @return array
  */
 private function get_product_data($product)
 {
     return array('title' => $product->get_name(), 'id' => $product->get_id(), 'created_at' => $this->server->format_datetime($product->get_date_created(), false, true), 'updated_at' => $this->server->format_datetime($product->get_date_modified(), false, true), 'type' => $product->get_type(), 'status' => $product->get_status(), 'downloadable' => $product->is_downloadable(), 'virtual' => $product->is_virtual(), 'permalink' => $product->get_permalink(), 'sku' => $product->get_sku(), 'price' => wc_format_decimal($product->get_price(), 2), 'regular_price' => wc_format_decimal($product->get_regular_price(), 2), 'sale_price' => $product->get_sale_price() ? wc_format_decimal($product->get_sale_price(), 2) : null, 'price_html' => $product->get_price_html(), 'taxable' => $product->is_taxable(), 'tax_status' => $product->get_tax_status(), 'tax_class' => $product->get_tax_class(), 'managing_stock' => $product->managing_stock(), 'stock_quantity' => $product->get_stock_quantity(), 'in_stock' => $product->is_in_stock(), 'backorders_allowed' => $product->backorders_allowed(), 'backordered' => $product->is_on_backorder(), 'sold_individually' => $product->is_sold_individually(), 'purchaseable' => $product->is_purchasable(), 'featured' => $product->is_featured(), 'visible' => $product->is_visible(), 'catalog_visibility' => $product->get_catalog_visibility(), 'on_sale' => $product->is_on_sale(), 'weight' => $product->get_weight() ? wc_format_decimal($product->get_weight(), 2) : null, 'dimensions' => array('length' => $product->get_length(), 'width' => $product->get_width(), 'height' => $product->get_height(), 'unit' => get_option('woocommerce_dimension_unit')), 'shipping_required' => $product->needs_shipping(), 'shipping_taxable' => $product->is_shipping_taxable(), 'shipping_class' => $product->get_shipping_class(), 'shipping_class_id' => 0 !== $product->get_shipping_class_id() ? $product->get_shipping_class_id() : null, 'description' => apply_filters('the_content', $product->get_description()), 'short_description' => apply_filters('woocommerce_short_description', $product->get_short_description()), 'reviews_allowed' => $product->get_reviews_allowed(), 'average_rating' => wc_format_decimal($product->get_average_rating(), 2), 'rating_count' => $product->get_rating_count(), 'related_ids' => array_map('absint', array_values(wc_get_related_products($product->get_id()))), 'upsell_ids' => array_map('absint', $product->get_upsell_ids()), 'cross_sell_ids' => array_map('absint', $product->get_cross_sell_ids()), 'categories' => wc_get_object_terms($product->get_id(), 'product_cat', 'name'), 'tags' => wc_get_object_terms($product->get_id(), 'product_tag', 'name'), 'images' => $this->get_images($product), 'featured_src' => wp_get_attachment_url(get_post_thumbnail_id($product->get_id())), 'attributes' => $this->get_attributes($product), 'downloads' => $this->get_downloads($product), 'download_limit' => $product->get_download_limit(), 'download_expiry' => $product->get_download_expiry(), 'download_type' => 'standard', 'purchase_note' => apply_filters('the_content', $product->get_purchase_note()), 'total_sales' => $product->get_total_sales(), 'variations' => array(), 'parent' => array());
 }

 /**
  * Get standard product data that applies to every product type
  *
  * @since 2.1
  * @param WC_Product $product
  * @return WC_Product
  */
 private function get_product_data($product)
 {
     return array('title' => $product->get_title(), 'id' => (int) $product->is_type('variation') ? $product->get_variation_id() : $product->id, 'created_at' => $this->server->format_datetime($product->get_post_data()->post_date_gmt), 'updated_at' => $this->server->format_datetime($product->get_post_data()->post_modified_gmt), 'type' => $product->product_type, 'status' => $product->get_post_data()->post_status, 'downloadable' => $product->is_downloadable(), 'virtual' => $product->is_virtual(), 'permalink' => $product->get_permalink(), 'sku' => $product->get_sku(), 'price' => $product->get_price(), 'regular_price' => $product->get_regular_price(), 'sale_price' => $product->get_sale_price() ? $product->get_sale_price() : null, 'price_html' => $product->get_price_html(), 'taxable' => $product->is_taxable(), 'tax_status' => $product->get_tax_status(), 'tax_class' => $product->get_tax_class(), 'managing_stock' => $product->managing_stock(), 'stock_quantity' => $product->get_stock_quantity(), 'in_stock' => $product->is_in_stock(), 'backorders_allowed' => $product->backorders_allowed(), 'backordered' => $product->is_on_backorder(), 'sold_individually' => $product->is_sold_individually(), 'purchaseable' => $product->is_purchasable(), 'featured' => $product->is_featured(), 'visible' => $product->is_visible(), 'catalog_visibility' => $product->visibility, 'on_sale' => $product->is_on_sale(), 'product_url' => $product->is_type('external') ? $product->get_product_url() : '', 'button_text' => $product->is_type('external') ? $product->get_button_text() : '', 'weight' => $product->get_weight() ? $product->get_weight() : null, 'dimensions' => array('length' => $product->length, 'width' => $product->width, 'height' => $product->height, 'unit' => get_option('woocommerce_dimension_unit')), 'shipping_required' => $product->needs_shipping(), 'shipping_taxable' => $product->is_shipping_taxable(), 'shipping_class' => $product->get_shipping_class(), 'shipping_class_id' => 0 !== $product->get_shipping_class_id() ? $product->get_shipping_class_id() : null, 'description' => wpautop(do_shortcode($product->get_post_data()->post_content)), 'short_description' => apply_filters('woocommerce_short_description', $product->get_post_data()->post_excerpt), 'reviews_allowed' => 'open' === $product->get_post_data()->comment_status, 'average_rating' => wc_format_decimal($product->get_average_rating(), 2), 'rating_count' => (int) $product->get_rating_count(), 'related_ids' => array_map('absint', array_values($product->get_related())), 'upsell_ids' => array_map('absint', $product->get_upsells()), 'cross_sell_ids' => array_map('absint', $product->get_cross_sells()), 'parent_id' => $product->post->post_parent, 'categories' => wp_get_post_terms($product->id, 'product_cat', array('fields' => 'names')), 'tags' => wp_get_post_terms($product->id, 'product_tag', array('fields' => 'names')), 'images' => $this->get_images($product), 'featured_src' => (string) wp_get_attachment_url(get_post_thumbnail_id($product->is_type('variation') ? $product->variation_id : $product->id)), 'attributes' => $this->get_attributes($product), 'downloads' => $this->get_downloads($product), 'download_limit' => (int) $product->download_limit, 'download_expiry' => (int) $product->download_expiry, 'download_type' => $product->download_type, 'purchase_note' => wpautop(do_shortcode(wp_kses_post($product->purchase_note))), 'total_sales' => metadata_exists('post', $product->id, 'total_sales') ? (int) get_post_meta($product->id, 'total_sales', true) : 0, 'variations' => array(), 'parent' => array(), 'grouped_products' => array());
 }

 /**
  * Get the min/max quantity range for this given product.  At least, do
  * the best we can.  The issue is that this is controlled ultimately by
  * template files, which could be changed by the user/theme.
  *
  * @see woocommerce-template.php woocommerce_quantity_input()
  * @see woocommerce/templates/single-product/add-to-cart/simple.php
  * @see woocommerce/templates/single-product/add-to-cart/variable.php
  *
  * @since 3.0
  * @param WC_Product $product the product
  * @return array associative array with keys 'min_value' and 'max_value'
  */
 public static function get_quantity_range($product)
 {
     // get the quantity min/max for this product
     $defaults = array('input_name' => 'quantity', 'input_value' => '1', 'max_value' => '', 'min_value' => '0');
     $args = array();
     if ($product->is_type('simple')) {
         $args = array('min_value' => 1, 'max_value' => $product->backorders_allowed() ? '' : $product->get_stock_quantity());
     }
     return apply_filters('woocommerce_quantity_input_args', wp_parse_args($args, $defaults));
 }

 } else {
     $end_date = strtotime(tribe_get_end_date(get_the_ID(), false, 'Y-m-d G:i') . $gmt_offset);
 }
 $start_date = null;
 if (!empty($ticket->start_date)) {
     $start_date = strtotime($ticket->start_date . $gmt_offset);
 }
 if ((empty($start_date) || time() > $start_date) && (empty($end_date) || time() < $end_date)) {
     $is_there_any_product = true;
     echo sprintf('<input type="hidden" name="product_id[]" value="%d">', $ticket->ID);
     echo '<tr>';
     echo '<td class="woocommerce">';
     if ($product->is_in_stock()) {
         // Max quantity will be left open if backorders allowed, restricted to 1 if the product is
         // constrained to be sold individually or else set to the available stock quantity
         $max_quantity = $product->backorders_allowed() ? '' : $product->get_stock_quantity();
         $max_quantity = $product->is_sold_individually() ? 1 : $max_quantity;
         woocommerce_quantity_input(array('input_name' => 'quantity_' . $ticket->ID, 'input_value' => 0, 'min_value' => 0, 'max_value' => $max_quantity));
         $is_there_any_product_to_sell = true;
     } else {
         echo '<span class="tickets_nostock">' . esc_html__('Out of stock!', 'tribe-wootickets') . '</span>';
     }
     echo '</td>';
     echo '<td nowrap="nowrap" class="tickets_name">';
     echo $ticket->name;
     echo '</td>';
     echo '<td class="tickets_price">';
     echo $this->get_price_html($product);
     //echo '<a class="member_discount nav_login" href="';
     //echo esc_url(home_url('/'));
     //echo 'wp-admin';

 /**
  * Gets an individual ticket
  *
  * @param $event_id
  * @param $ticket_id
  *
  * @return null|Tribe__Tickets__Ticket_Object
  */
 public function get_ticket($event_id, $ticket_id)
 {
     if (class_exists('WC_Product_Simple')) {
         $product = new WC_Product_Simple($ticket_id);
     } else {
         $product = new WC_Product($ticket_id);
     }
     if (!$product) {
         return null;
     }
     $return = new Tribe__Tickets__Ticket_Object();
     $product_data = $product->get_post_data();
     $qty = get_post_meta($ticket_id, 'total_sales', true);
     $return->description = $product_data->post_excerpt;
     $return->frontend_link = get_permalink($ticket_id);
     $return->ID = $ticket_id;
     $return->name = $product->get_title();
     $return->price = $product->get_price();
     $return->regular_price = $product->get_regular_price();
     $return->on_sale = (bool) $product->is_on_sale();
     $return->provider_class = get_class($this);
     $return->admin_link = admin_url(sprintf(get_post_type_object($product_data->post_type)->_edit_link . '&action=edit', $ticket_id));
     $return->start_date = get_post_meta($ticket_id, '_ticket_start_date', true);
     $return->end_date = get_post_meta($ticket_id, '_ticket_end_date', true);
     $return->purchase_limit = get_post_meta($ticket_id, '_ticket_purchase_limit', true);
     $complete_totals = $this->count_order_items_by_status($ticket_id, 'complete');
     $pending_totals = $this->count_order_items_by_status($ticket_id, 'incomplete');
     $qty = $qty ? $qty : 0;
     $pending = $pending_totals['total'] ? $pending_totals['total'] : 0;
     // if any orders transitioned from complete back to one of the incomplete states, their quantities
     // were already recorded in total_sales and we have to deduct them from there so they aren't
     // double counted
     $qty -= $pending_totals['recorded_sales'];
     // let's calculate the stock based on the product stock minus the quantity purchased minus the
     // pending purchases
     $stock = $product->get_stock_quantity() - $qty - $pending;
     // if any orders have reduced the stock of an order (check and cash on delivery payments do this, for example)
     // we need to re-inflate the stock by that amount
     $stock += $pending_totals['reduced_stock'];
     $stock += $complete_totals['reduced_stock'];
     $return->manage_stock($product->managing_stock());
     $return->stock($stock);
     $return->qty_sold($qty);
     $return->qty_pending($pending);
     $return->qty_cancelled($this->get_cancelled($ticket_id));
     if (empty($return->purchase_limit) && 0 !== (int) $return->purchase_limit) {
         /**
          * Filter the default purchase limit for the ticket
          *
          * @var int
          *
          * @return int
          */
         $return->purchase_limit = apply_filters('tribe_tickets_default_purchase_limit', 0);
     }
     return apply_filters('wootickets_get_ticket', $return, $event_id, $ticket_id);
 }

 /**
  * Gets an individual ticket
  *
  * @param $event_id
  * @param $ticket_id
  *
  * @return null|Tribe__Events__Tickets__Ticket_Object
  */
 public function get_ticket($event_id, $ticket_id)
 {
     if (class_exists('WC_Product_Simple')) {
         $product = new WC_Product_Simple($ticket_id);
     } else {
         $product = new WC_Product($ticket_id);
     }
     if (!$product) {
         return null;
     }
     $return = new Tribe__Events__Tickets__Ticket_Object();
     $product_data = $product->get_post_data();
     $qty = get_post_meta($ticket_id, 'total_sales', true);
     $return->description = $product_data->post_excerpt;
     $return->frontend_link = get_permalink($ticket_id);
     $return->ID = $ticket_id;
     $return->name = $product->get_title();
     $return->price = $product->get_price();
     $return->regular_price = $product->get_regular_price();
     $return->on_sale = (bool) $product->is_on_sale();
     $return->provider_class = get_class($this);
     $return->admin_link = admin_url(sprintf(get_post_type_object($product_data->post_type)->_edit_link . '&action=edit', $ticket_id));
     $return->stock = $product->get_stock_quantity();
     $return->start_date = get_post_meta($ticket_id, '_ticket_start_date', true);
     $return->end_date = get_post_meta($ticket_id, '_ticket_end_date', true);
     $return->qty_sold = $qty ? $qty : 0;
     $return->qty_pending = $qty ? $this->count_incomplete_order_items($ticket_id) : 0;
     $return->purchase_limit = get_post_meta($ticket_id, '_ticket_purchase_limit', true);
     if (empty($return->purchase_limit) && 0 !== (int) $return->purchase_limit) {
         /**
          * Filter the default purchase limit for the ticket
          *
          * @var int
          *
          * @return int
          */
         $return->purchase_limit = apply_filters('tribe_tickets_default_purchase_limit', 0);
     }
     return apply_filters('wootickets_get_ticket', $return, $event_id, $ticket_id);
 }

 /**
  * Add a product to the cart
  *
  * @param   string	product_id	contains the id of the product to add to the cart
  * @param   string	quantity	contains the quantity of the item to add
  * @param   int     variation_id
  * @param   array   variation attribute values
  */
 function add_to_cart($product_id, $quantity = 1, $variation_id = '', $variation = '')
 {
     global $woocommerce;
     if ($quantity < 1) {
         return false;
     }
     // Load cart item data - may be added by other plugins
     $cart_item_data = (array) apply_filters('woocommerce_add_cart_item_data', array(), $product_id);
     // Generate a ID based on product ID, variation ID, variation data, and other cart item data
     $cart_id = $this->generate_cart_id($product_id, $variation_id, $variation, $cart_item_data);
     // See if this product and its options is already in the cart
     $cart_item_key = $this->find_product_in_cart($cart_id);
     if ($variation_id > 0) {
         $product_data = new WC_Product_Variation($variation_id);
     } else {
         $product_data = new WC_Product($product_id);
     }
     // Type/Exists check
     if ($product_data->is_type('external') || !$product_data->exists()) {
         $woocommerce->add_error(__('This product cannot be purchased.', 'woocommerce'));
         return false;
     }
     // Price set check
     if ($product_data->get_price() === '') {
         $woocommerce->add_error(__('This product cannot be purchased - the price is not yet set.', 'woocommerce'));
         return false;
     }
     // Stock check - only check if we're managing stock and backorders are not allowed
     if (!$product_data->has_enough_stock($quantity)) {
         $woocommerce->add_error(sprintf(__('You cannot add that amount to the cart since there is not enough stock. We have %s in stock.', 'woocommerce'), $product_data->get_stock_quantity()));
         return false;
     } elseif (!$product_data->is_in_stock()) {
         $woocommerce->add_error(__('You cannot add that product to the cart since the product is out of stock.', 'woocommerce'));
         return false;
     }
     if ($cart_item_key) {
         $quantity = $quantity + $this->cart_contents[$cart_item_key]['quantity'];
         // Stock check - this time accounting for whats already in-cart
         if (!$product_data->has_enough_stock($quantity)) {
             $woocommerce->add_error(sprintf(__('You cannot add that amount to the cart since there is not enough stock. We have %s in stock and you already have %s in your cart.', 'woocommerce'), $product_data->get_stock_quantity(), $this->cart_contents[$cart_item_key]['quantity']));
             return false;
         } elseif (!$product_data->is_in_stock()) {
             $woocommerce->add_error(__('You cannot add that product to the cart since the product is out of stock.', 'woocommerce'));
             return false;
         }
         $this->set_quantity($cart_item_key, $quantity);
     } else {
         // Add item after merging with $cart_item_data - hook to allow plugins to modify cart item
         $this->cart_contents[$cart_id] = apply_filters('woocommerce_add_cart_item', array_merge($cart_item_data, array('product_id' => $product_id, 'variation_id' => $variation_id, 'variation' => $variation, 'quantity' => $quantity, 'data' => $product_data)));
     }
     $this->set_session();
     return true;
 }

 /**
  * Check stock before attempting to call the add_to_cart function
  * Some double checking happens, but it's better than partially adding items to the cart
  **/
 function validate_stock($product_id, $variation_id, $quantity, $exclude_cart, $silent)
 {
     global $woocommerce;
     if ($variation_id > 0) {
         if ($this->is_wc_v2()) {
             $product_data = get_product($variation_id, array('product_type' => 'variation'));
         } else {
             $product_data = new WC_Product_Variation($variation_id);
         }
     } else {
         if ($this->is_wc_v2()) {
             $product_data = get_product($product_id, array('product_type' => 'simple'));
         } else {
             $product_data = new WC_Product($product_id);
         }
     }
     // Stock check - only check if we're managing stock and backorders are not allowed.
     if (!$product_data->is_in_stock()) {
         if (!$silent) {
             $woocommerce->add_error(sprintf(__('You cannot add this product to the cart since "%s" is out of stock.', 'woo-bundles'), $product_data->get_title()));
         }
         return false;
     } elseif (!$product_data->has_enough_stock($quantity)) {
         if (!$silent) {
             $woocommerce->add_error(sprintf(__('You cannot add that amount to the cart since there is not enough stock of "%s". We have %s in stock.', 'woo-bundles'), $product_data->get_title(), $product_data->get_stock_quantity()));
         }
         return false;
     }
     // Stock check - this time accounting for whats already in-cart.
     if ($exclude_cart) {
         return true;
     }
     $product_qty_in_cart = $woocommerce->cart->get_cart_item_quantities();
     if ($product_data->managing_stock()) {
         // Variations
         if ($variation_id && $product_data->variation_has_stock) {
             if (isset($product_qty_in_cart[$variation_id]) && !$product_data->has_enough_stock($product_qty_in_cart[$variation_id] + $quantity)) {
                 if (!$silent) {
                     $woocommerce->add_error(sprintf(__('<a href="%s" class="button">%s</a>You cannot add that amount to the cart since there is not enough stock of "%s" &mdash; we have %s in stock and you already have %s in your cart.', 'woo-bundles'), get_permalink(woocommerce_get_page_id('cart')), __('View Cart &rarr;', 'woocommerce'), $product_data->get_title(), $product_data->get_stock_quantity(), $product_qty_in_cart[$variation_id]));
                 }
                 return false;
             }
             // Products
         } else {
             if (isset($product_qty_in_cart[$product_id]) && !$product_data->has_enough_stock($product_qty_in_cart[$product_id] + $quantity)) {
                 if (!$silent) {
                     $woocommerce->add_error(sprintf(__('<a href="%s" class="button">%s</a>You cannot add that amount to the cart since there is not enough stock of "%s" &mdash; we have %s in stock and you already have %s in your cart.', 'woo-bundles'), get_permalink(woocommerce_get_page_id('cart')), __('View Cart &rarr;', 'woocommerce'), $product_data->get_title(), $product_data->get_stock_quantity(), $product_qty_in_cart[$product_id]));
                 }
                 return false;
             }
         }
     }
     return true;
 }

 public function quantity_change_handler($order_id)
 {
     if (!version_compare(WOOCOMMERCE_VERSION, '2.1', '<')) {
         $order = new WC_Order($order_id);
         foreach ($order->get_items() as $item) {
             $product_id = $item['product_id'];
             $product = new WC_Product($product_id);
             if (!$product->managing_stock()) {
                 continue;
             }
             $quantity = $product->get_stock_quantity();
             if ($item['qty'] == $quantity) {
                 // update out of stock
                 self::on_product_update($product_id, 'update');
             }
         }
     }
 }

 /**
  * Gets an individual ticket
  *
  * @param $unused_event_id
  * @param $ticket_id
  *
  * @return null|Tribe__Events__Tickets__Ticket_Object
  */
 public function get_ticket($unused_event_id, $ticket_id)
 {
     if (class_exists('WC_Product_Simple')) {
         $product = new WC_Product_Simple($ticket_id);
     } else {
         $product = new WC_Product($ticket_id);
     }
     if (!$product) {
         return null;
     }
     $return = new Tribe__Events__Tickets__Ticket_Object();
     $product_data = $product->get_post_data();
     $qty = get_post_meta($ticket_id, 'total_sales', true);
     $return->description = $product_data->post_excerpt;
     $return->frontend_link = get_permalink($ticket_id);
     $return->ID = $ticket_id;
     $return->name = $product->get_title();
     $return->price = $product->get_price();
     $return->regular_price = $product->get_regular_price();
     $return->on_sale = (bool) $product->is_on_sale();
     $return->provider_class = get_class($this);
     $return->admin_link = admin_url(sprintf(get_post_type_object($product_data->post_type)->_edit_link . '&action=edit', $ticket_id));
     $return->stock = $product->get_stock_quantity();
     $return->start_date = get_post_meta($ticket_id, '_ticket_start_date', true);
     $return->end_date = get_post_meta($ticket_id, '_ticket_end_date', true);
     $return->qty_sold = $qty ? $qty : 0;
     $return->qty_pending = $qty ? $this->count_incomplete_order_items($ticket_id) : 0;
     return $return;
 }

 if (!empty($ticket->end_date)) {
     $end_date = strtotime($ticket->end_date . $gmt_offset);
 } else {
     $end_date = strtotime(tribe_get_end_date(get_the_ID(), false, 'Y-m-d G:i') . $gmt_offset);
 }
 $start_date = null;
 if (!empty($ticket->start_date)) {
     $start_date = strtotime($ticket->start_date . $gmt_offset);
 }
 if ((empty($start_date) || time() > $start_date) && (empty($end_date) || time() < $end_date)) {
     $is_there_any_product = true;
     echo sprintf("<input type='hidden' name='product_id[]' value='%d'>", $ticket->ID);
     echo "<tr>";
     echo "<td class='woocommerce'>";
     if ($product->is_in_stock()) {
         woocommerce_quantity_input(array('input_name' => 'quantity_' . $ticket->ID, 'input_value' => 0, 'min_value' => 0, 'max_value' => $product->backorders_allowed() ? '' : $product->get_stock_quantity()));
         $is_there_any_product_to_sell = true;
     } else {
         echo "<span class='tickets_nostock'>" . esc_html__('Out of stock!', 'tribe-wootickets') . "</span>";
     }
     echo "</td>";
     echo "<td nowrap='nowrap' class='tickets_name'>";
     echo $ticket->name;
     echo "</td>";
     echo "<td class='tickets_price'>";
     echo $this->get_price_html($product);
     echo "</td>";
     echo "<td class='tickets_description'>";
     echo $ticket->description;
     echo "</td>";
     echo "</tr>";

 /**
  * Add a product to the cart
  *
  * @param string $product_id contains the id of the product to add to the cart
  * @param string $quantity contains the quantity of the item to add
  * @param int $variation_id
  * @param array $variation attribute values
  * @param array $cart_item_data extra cart item data we want to pass into the item
  * @return bool
  */
 function add_to_cart($product_id, $quantity = 1, $variation_id = '', $variation = '', $cart_item_data = array())
 {
     global $woocommerce;
     if ($quantity < 1) {
         return false;
     }
     // Load cart item data - may be added by other plugins
     $cart_item_data = (array) apply_filters('woocommerce_add_cart_item_data', $cart_item_data, $product_id);
     // Generate a ID based on product ID, variation ID, variation data, and other cart item data
     $cart_id = $this->generate_cart_id($product_id, $variation_id, $variation, $cart_item_data);
     // See if this product and its options is already in the cart
     $cart_item_key = $this->find_product_in_cart($cart_id);
     if ($variation_id > 0) {
         $product_data = new WC_Product_Variation($variation_id);
     } else {
         $product_data = new WC_Product($product_id);
     }
     // Force quantity to 1 if sold individually
     if ($product_data->is_sold_individually()) {
         $quantity = 1;
     }
     // Type/Exists check
     if ($product_data->is_type('external') || !$product_data->exists()) {
         $woocommerce->add_error(__('This product cannot be purchased.', 'woocommerce'));
         return false;
     }
     // Price set check
     if ($product_data->get_price() === '') {
         $woocommerce->add_error(__('This product cannot be purchased - the price is not yet set.', 'woocommerce'));
         return false;
     }
     // Stock check - only check if we're managing stock and backorders are not allowed
     if (!$product_data->has_enough_stock($quantity)) {
         $woocommerce->add_error(sprintf(__('You cannot add that amount to the cart since there is not enough stock. We have %s in stock.', 'woocommerce'), $product_data->get_stock_quantity()));
         return false;
     } elseif (!$product_data->is_in_stock()) {
         $woocommerce->add_error(__('You cannot add that product to the cart since the product is out of stock.', 'woocommerce'));
         return false;
     }
     // Downloadable/virtual qty check
     if ($product_data->is_sold_individually()) {
         $in_cart_quantity = $cart_item_key ? $this->cart_contents[$cart_item_key]['quantity'] + $quantity : $quantity;
         // If its greater than 1, its already in the cart
         if ($in_cart_quantity > 1) {
             $woocommerce->add_error(sprintf('<a href="%s" class="button">%s</a> %s', get_permalink(woocommerce_get_page_id('cart')), __('View Cart &rarr;', 'woocommerce'), __('You already have this item in your cart.', 'woocommerce')));
             return false;
         }
     }
     // Stock check - this time accounting for whats already in-cart
     $product_qty_in_cart = $this->get_cart_item_quantities();
     if ($product_data->managing_stock()) {
         // Variations
         if ($variation_id && $product_data->variation_has_stock) {
             if (isset($product_qty_in_cart[$variation_id]) && !$product_data->has_enough_stock($product_qty_in_cart[$variation_id] + $quantity)) {
                 $woocommerce->add_error(sprintf(__('<a href="%s" class="button">%s</a> You cannot add that amount to the cart &mdash; we have %s in stock and you already have %s in your cart.', 'woocommerce'), get_permalink(woocommerce_get_page_id('cart')), __('View Cart &rarr;', 'woocommerce'), $product_data->get_stock_quantity(), $product_qty_in_cart[$variation_id]));
                 return false;
             }
             // Products
         } else {
             if (isset($product_qty_in_cart[$product_id]) && !$product_data->has_enough_stock($product_qty_in_cart[$product_id] + $quantity)) {
                 $woocommerce->add_error(sprintf(__('<a href="%s" class="button">%s</a> You cannot add that amount to the cart &mdash; we have %s in stock and you already have %s in your cart.', 'woocommerce'), get_permalink(woocommerce_get_page_id('cart')), __('View Cart &rarr;', 'woocommerce'), $product_data->get_stock_quantity(), $product_qty_in_cart[$product_id]));
                 return false;
             }
         }
     }
     // If cart_item_key is set, the item is already in the cart
     if ($cart_item_key) {
         $new_quantity = $quantity + $this->cart_contents[$cart_item_key]['quantity'];
         $this->set_quantity($cart_item_key, $new_quantity);
     } else {
         $cart_item_key = $cart_id;
         // Add item after merging with $cart_item_data - hook to allow plugins to modify cart item
         $this->cart_contents[$cart_item_key] = apply_filters('woocommerce_add_cart_item', array_merge($cart_item_data, array('product_id' => $product_id, 'variation_id' => $variation_id, 'variation' => $variation, 'quantity' => $quantity, 'data' => $product_data)), $cart_item_key);
     }
     do_action('woocommerce_add_to_cart', $cart_item_key, $product_id, $quantity, $variation_id, $variation, $cart_item_data);
     $woocommerce->cart_has_contents_cookie(true);
     $this->set_session();
     return true;
 }

 /**
  * Get standard product data that applies to every product type
  *
  * @since 2.1
  * @param WC_Product $product
  * @return WC_Product
  */
 private function get_product_data($product, $fields = null)
 {
     if ($fields) {
         $field_list = explode(',', $fields);
     }
     $product_data = array();
     if (!$fields || $fields && in_array('title', $field_list)) {
         $product_data['title'] = $product->get_title();
     }
     if (!$fields || $fields && in_array('id', $field_list)) {
         $product_data['id'] = (int) $product->is_type('variation') ? $product->get_variation_id() : $product->id;
     }
     if (!$fields || $fields && in_array('created_at', $field_list)) {
         $product_data['created_at'] = $this->server->format_datetime($product->get_post_data()->post_date_gmt);
     }
     if (!$fields || $fields && in_array('updated_at', $field_list)) {
         $product_data['updated_at'] = $this->server->format_datetime($product->get_post_data()->post_modified_gmt);
     }
     if (!$fields || $fields && in_array('type', $field_list)) {
         $product_data['type'] = $product->product_type;
     }
     if (!$fields || $fields && in_array('status', $field_list)) {
         $product_data['status'] = $product->get_post_data()->post_status;
     }
     if (!$fields || $fields && in_array('downloadable', $field_list)) {
         $product_data['downloadable'] = $product->is_downloadable();
     }
     if (!$fields || $fields && in_array('virtual', $field_list)) {
         $product_data['virtual'] = $product->is_virtual();
     }
     if (!$fields || $fields && in_array('permalink', $field_list)) {
         $product_data['permalink'] = $product->get_permalink();
     }
     if (!$fields || $fields && in_array('sku', $field_list)) {
         $product_data['sku'] = $product->get_sku();
     }
     if (!$fields || $fields && in_array('price', $field_list)) {
         $product_data['price'] = $product->get_price();
     }
     if (!$fields || $fields && in_array('regular_price', $field_list)) {
         $product_data['regular_price'] = $product->get_regular_price();
     }
     if (!$fields || $fields && in_array('sale_price', $field_list)) {
         $product_data['sale_price'] = $product->get_sale_price() ? $product->get_sale_price() : null;
     }
     if (!$fields || $fields && in_array('price_html', $field_list)) {
         $product_data['price_html'] = $product->get_price_html();
     }
     if (!$fields || $fields && in_array('taxable', $field_list)) {
         $product_data['taxable'] = $product->is_taxable();
     }
     if (!$fields || $fields && in_array('tax_status', $field_list)) {
         $product_data['tax_status'] = $product->get_tax_status();
     }
     if (!$fields || $fields && in_array('tax_class', $field_list)) {
         $product_data['tax_class'] = $product->get_tax_class();
     }
     if (!$fields || $fields && in_array('managing_stock', $field_list)) {
         $product_data['managing_stock'] = $product->managing_stock();
     }
     if (!$fields || $fields && in_array('stock_quantity', $field_list)) {
         $product_data['stock_quantity'] = $product->get_stock_quantity();
     }
     if (!$fields || $fields && in_array('in_stock', $field_list)) {
         $product_data['in_stock'] = $product->is_in_stock();
     }
     if (!$fields || $fields && in_array('backorders_allowed', $field_list)) {
         $product_data['backorders_allowed'] = $product->backorders_allowed();
     }
     if (!$fields || $fields && in_array('backordered', $field_list)) {
         $product_data['backordered'] = $product->is_on_backorder();
     }
     if (!$fields || $fields && in_array('sold_individually', $field_list)) {
         $product_data['sold_individually'] = $product->is_sold_individually();
     }
     if (!$fields || $fields && in_array('purchaseable', $field_list)) {
         $product_data['purchaseable'] = $product->is_purchasable();
     }
     if (!$fields || $fields && in_array('featured', $field_list)) {
         $product_data['featured'] = $product->is_featured();
     }
     if (!$fields || $fields && in_array('visible', $field_list)) {
         $product_data['visible'] = $product->is_visible();
     }
     if (!$fields || $fields && in_array('catalog_visibility', $field_list)) {
         $product_data['catalog_visibility'] = $product->visibility;
     }
     if (!$fields || $fields && in_array('on_sale', $field_list)) {
         $product_data['on_sale'] = $product->is_on_sale();
     }
     if (!$fields || $fields && in_array('product_url', $field_list)) {
         $product_data['product_url'] = $product->is_type('external') ? $product->get_product_url() : '';
     }
//.........这里部分代码省略.........

 /**
  * Update a line item for the order.
  *
  * Note this does not update order totals.
  *
  * @param object|int $item order item ID or item object.
  * @param WC_Product $product
  * @param array $args data to update.
  * @return int updated order item ID
  * @throws WC_Data_Exception
  */
 public function update_product($item, $product, $args)
 {
     wc_deprecated_function('WC_Order::update_product', '2.7', 'Interact with WC_Order_Item_Product class');
     if (is_numeric($item)) {
         $item = $this->get_item($item);
     }
     if (!is_object($item) || !$item->is_type('line_item')) {
         return false;
     }
     if (!$this->get_id()) {
         $this->save();
         // Order must exist
     }
     // BW compatibility with old args
     if (isset($args['totals'])) {
         foreach ($args['totals'] as $key => $value) {
             if ('tax' === $key) {
                 $args['total_tax'] = $value;
             } elseif ('tax_data' === $key) {
                 $args['taxes'] = $value;
             } else {
                 $args[$key] = $value;
             }
         }
     }
     // Handly qty if set
     if (isset($args['qty'])) {
         if ($product->backorders_require_notification() && $product->is_on_backorder($args['qty'])) {
             $item->add_meta_data(apply_filters('woocommerce_backordered_item_meta_name', __('Backordered', 'woocommerce')), $args['qty'] - max(0, $product->get_stock_quantity()), true);
         }
         $args['subtotal'] = $args['subtotal'] ? $args['subtotal'] : wc_get_price_excluding_tax($product, array('qty' => $args['qty']));
         $args['total'] = $args['total'] ? $args['total'] : wc_get_price_excluding_tax($product, array('qty' => $args['qty']));
     }
     $item->set_order_id($this->get_id());
     $item->set_props($args);
     $item->save();
     do_action('woocommerce_order_edit_product', $this->get_id(), $item->get_id(), $args, $product);
     return $item->get_id();
 }

 /**
  * Gets an individual ticket
  *
  * @param $event_id
  * @param $ticket_id
  *
  * @return null|Tribe__Tickets__Ticket_Object
  */
 public function get_ticket($event_id, $ticket_id)
 {
     if (class_exists('WC_Product_Simple')) {
         $product = new WC_Product_Simple($ticket_id);
     } else {
         $product = new WC_Product($ticket_id);
     }
     if (!$product) {
         return null;
     }
     $return = new Tribe__Tickets__Ticket_Object();
     $product_data = $product->get_post_data();
     $qty = get_post_meta($ticket_id, 'total_sales', true);
     $return->description = $product_data->post_excerpt;
     $return->frontend_link = get_permalink($ticket_id);
     $return->ID = $ticket_id;
     $return->name = $product->get_title();
     $return->price = $product->get_price();
     $return->regular_price = $product->get_regular_price();
     $return->on_sale = (bool) $product->is_on_sale();
     $return->provider_class = get_class($this);
     $return->admin_link = admin_url(sprintf(get_post_type_object($product_data->post_type)->_edit_link . '&action=edit', $ticket_id));
     $return->start_date = get_post_meta($ticket_id, '_ticket_start_date', true);
     $return->end_date = get_post_meta($ticket_id, '_ticket_end_date', true);
     $return->purchase_limit = get_post_meta($ticket_id, '_ticket_purchase_limit', true);
     $complete_totals = $this->count_order_items_by_status($ticket_id, 'complete');
     $pending_totals = $this->count_order_items_by_status($ticket_id, 'incomplete');
     $qty = $qty ? $qty : 0;
     $pending = $pending_totals['total'] ? $pending_totals['total'] : 0;
     // Ticket stock is a simple reflection of remaining inventory for this item...
     $stock = $product->get_stock_quantity();
     // ...With some exceptions for global stock tickets
     $stock = $this->set_stock_level_for_global_stock_tickets($stock, $event_id, $ticket_id);
     $return->manage_stock($product->managing_stock());
     $return->stock($stock);
     $return->global_stock_mode(get_post_meta($ticket_id, '_global_stock_mode', true));
     $return->global_stock_cap(get_post_meta($ticket_id, '_global_stock_cap', true));
     $return->qty_sold($qty);
     $return->qty_pending($pending);
     $return->qty_cancelled($this->get_cancelled($ticket_id));
     if (empty($return->purchase_limit) && 0 !== (int) $return->purchase_limit) {
         /**
          * Filter the default purchase limit for the ticket
          *
          * @var int
          *
          * @return int
          */
         $return->purchase_limit = apply_filters('tribe_tickets_default_purchase_limit', 0);
     }
     return apply_filters('wootickets_get_ticket', $return, $event_id, $ticket_id);
 }