c# barcode generator code 39 DEALING WITH CUSTOMER ORDERS in Visual C#

Printing Code-39 in Visual C# DEALING WITH CUSTOMER ORDERS

CHAPTER 9 DEALING WITH CUSTOMER ORDERS
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Implementing the Order Placement Functionality
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Now it s time to implement the Place Order button s functionality. Because this functionality depends on the company that processes your payments, you might need to adapt it to the behavior of your payment processing company. If you use PayPal, the code that redirects the visitor to a payment was already presented in Using the PayPal Single Item Purchases Feature section of 6. Add the following highlighted code in the init() method of the CartDetails class in presentation/smarty_plugins/function.load_cart_details.php: // Calculate the total amount for the shopping cart $this->mTotalAmount = ShoppingCart::GetTotalAmount(); // If the Place Order button was clicked ... if(isset ($_POST['place_order'])) { // Create the order and get the order ID $order_id = ShoppingCart::CreateOrder(); // This will contain the PayPal link $redirect = 'https://www.paypal.com/xclick/business=youremail@example.com' . '&item_name=HatShop Order ' . $order_id . '&item_number=' . $order_id . '&amount=' . $this->mTotalAmount . '¤cy=USD&return=www.example.com' . '&cancel_return=www.example.com'; // Redirection to the payment page header('Location: ' . $redirect); exit; } // Get shopping cart products $this->mCartProducts = ShoppingCart::GetCartProducts(GET_CART_PRODUCTS); Of course, if you use another company to process your payments, you ll need to modify the code accordingly. When a visitor clicks the Place Order button, two important actions happen. First, the order is created in the database by calling the CreateOrder method of the ShoppingCart class. This function calls the shopping_cart_create_order database function to create a new order with the products in the shopping cart and returns the ID of the new order: // Create the order and get the order ID $order_id = ShoppingCart::CreateOrder();
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CHAPTER 9 DEALING WITH CUSTOMER ORDERS
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Second, the visitor is redirected to the payment page, which requests payment for an item named HatShop Order nnn with a value that amounts to the total value of the order. Right now, your Place Order button is fully functional! Test it by adding some products to your cart, and clicking Place Order. Your shopping cart should be cleared, and you should be forwarded to a PayPal payment page like the one shown earlier in Figure 9-2.
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Administering Orders
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So your visitor just made an order. Now what After giving visitors the option to pay for your products, you need to make sure they actually get what they paid for. HatShop needs a carefully designed orders administration page, where the administrator can quickly see the status of pending orders.
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Note This chapter doesn't intend to help you create a perfect order administration system but rather
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something that is simple and functional enough to get you on the right track.
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The orders administration part of the site will consist of two componentized templates named admin_orders and admin_order_details. When the administrator clicks on the ORDERS ADMIN link, the admin.php page loads the admin_orders componentized template that offers the capability to filter the orders. When first loaded, it offers you various ways of selecting orders, as shown in Figure 9-4.
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Figure 9-4. The Orders Admin page After clicking one of the Go! buttons, the matching orders appear in a table (see Figure 9-5).
CHAPTER 9 DEALING WITH CUSTOMER ORDERS
Figure 9-5. Selecting the most recent orders in the Orders Admin page When you click the View Details button for an order, you are sent to a page where you can view and update order information, as shown in Figure 9-6.
Figure 9-6. Administering order details
CHAPTER 9 DEALING WITH CUSTOMER ORDERS
Setting Up the Orders Administration Page
Before you start creating the admin_orders and the admin_order_details componentized templates, let s modify admin.php to load these componentized templates and also modify admin_menu.tpl to display an ORDERS ADMIN link.
Exercise: Setting Up ADMIN ORDERS
1. Modify admin.php to include a reference to include/app_top.php that we ll later create: // Load Business Tier require_once BUSINESS_DIR . 'catalog.php'; require_once BUSINESS_DIR . 'shopping_cart.php'; require_once BUSINESS_DIR . 'orders.php'; 2. In the admin.php file, add the highlighted code that loads admin_orders.tpl and admin_order_details.tpl: elseif ($admin_page $pageContentsCell elseif ($admin_page $pageContentsCell elseif ($admin_page $pageContentsCell == 'Cart') = 'admin_cart.tpl'; == 'Orders') = 'admin_orders.tpl'; == 'OrderDetails') = 'admin_order_details.tpl';
3. Modify presentation/templates/admin_menu.tpl by adding the highlighted link code to the cart admin page: <span class="menu_text"> | <a href="{"admin.php Page=Orders"|prepare_link:"https"}">ORDERS ADMIN</a> | <a href="{"admin.php Page=Cart"|prepare_link:"https"}">CART ADMIN</a> |
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