PHP 5 e-commerce Development- P55 pdf

Chapter 12 [ 253 ] Query for order items The second query for the model is to get the individual items in the order. The following is a basic query which does this, although this does not take into account variants of a product that we may have been purchased: $sql = "SELECT ctp.price, (ctp.price*i.qty) AS cost, i.qty, v.name, i.product_id FROM content_types_products ctp, orders_items i, content c, content_versions v WHERE i.order_id={$this->id} AND c.ID=i.product_id AND v.ID=current_revision AND ctp.content_version=v.ID"; The results of this query should be cached, so that any of our controllers can send the results directly to a view by associating the cache ID with a template variable. Cancelling an order There may of course be times when a customer wishes to cancel an order, for reasons such as maybe we were too slow to dispatch it, perhaps they changed their mind, or perhaps they ordered mistakenly. While allowing a customer to cancel an order will obviously lose us a sale, it keeps our potential customers happy, and should hopefully help our store's reputation. Up until the point where we dispatch an order, it should be very easy for a customer to cancel the order. Of course, we may want to expand this later to handle returns and authorizing returns from customers. For the customer to cancel an order there should be a few simple stages: 1. First they should view the order. 2. Next they should select an option somewhere to cancel the order. 3. They should be able to enter a comment or note about why they are cancelling the order. 4. They should conrm their wish. 5. The order should be cancelled. 6. An e-mail should be sent to them to conrm their order was cancelled (particularly useful if they cancelled it mistakenly). 7. Payment should be refunded (automatically, if the payment method allows it). 8. An e-mail should be sent to the store administrator. This material is copyright and is licensed for the sole use by jackie tracey on 23rd February 2010 953 Quincy Drive, , Brick, , 08724 User Account Features [ 254 ] This requires some functionality in our order model to cancel the order, and also some code for our user area controller. Order model additions There are a few additions required to our order model, so that we can change the functionality of the cancel order method. Depending on whether the administrator or the customer cancels the order, we can use a parameter to indicate who is cancelling the order. public function cancelOrder( $initiatedBy ) { // Only orders that are awaiting payment or awaiting dispatch can // be cancelled, so we must check the status of the order first. // is the order pending payment or dispatch i.e. cancellable? if( $this->status == 1 || $this->status == 2 ) { // We then update the order item in the database to cancelled. $changes = array( 'status' => 4 ); $this->registry->getObject('db')->updateRecords('orders', $changes, 'ID=' . $this->id ); // If the order was cancelled by the customer, we then need to // e-mail the administrator, e-mail confirmation to the customer, // and if we can, refund the payment. if( $initiatedBy == 'user' ) { // e-mail the administrator // e-mail the customer confirmation // refund the payment? } // If the order was refunded by the administrator we e-mail theadministrator we e-mail the we e-mail the // customer to inform then, and if possible, refund the payment. elseif( $initiatedBy == 'admin' ) { // e-mail the customer // refund the payment? } // We return true, so that the relevant controller can display a // message indicating that the order was cancelled. return true; } else { // order isnt cancallable This material is copyright and is licensed for the sole use by jackie tracey on 23rd February 2010 953 Quincy Drive, , Brick, , 08724 Chapter 12 [ 255 ] We return false to indicate that the order was not cancelled, allowing our controllerindicate that the order was not cancelled, allowing our controller that the order was not cancelled, allowing our controller to inform the user of this. return false; } } Controller code To facilitate cancelling the order, we need to have two functions in our controller: one to display a conrmation message and another to actually cancel the order. The following function checks whether the order is valid and belongs to the current user; if it does, it displays a conrmation message: private function confirmCancelOrder( $orderId ) { $this->registry->getObject('template')-> buildFromTemplates('header.tpl.php', 'account/confirm-cancel.tpl.php','footer.tpl.php'); require_once( FRAMEWORK_PATH . 'models/order/model.php'); $this->order = new Order( $this->registry, $orderId ); if( $this->order->isValid() ) { if( $this->order->getUser() == $this->registry-> getObject('authenticate')->getUserID() ) { $this->registry->getObject('db')->getPage()->addTag('orderid', $orderId ); } else { $this->registry->redirectUser( 'useraccount', 'Invalid order', 'The order was not cancelled as it was not tied to your account', $admin = false ); } } else { $this->registry->redirectUser( 'useraccount', 'Invalid order', 'The order was not found', $admin = false ); } } This material is copyright and is licensed for the sole use by jackie tracey on 23rd February 2010 953 Quincy Drive, , Brick, , 08724 User Account Features [ 256 ] When the customer clicks on the conrmation link within the conrmation page, the following function is called; this again validates whether the order belongs to the customer, and then cancels it using the model (which in turn, checks if the order can be cancelled, and sends any relevant e-mail notications): private function cancelOrder( $orderId ) { require_once( FRAMEWORK_PATH . 'models/order/model.php'); $this->order = new Order( $this->registry, $orderId ); if( $this->order->isValid() ) { if( $this->order->getUser() == $this->registry-> getObject('authenticate')->getUserID() ) { $this->order->cancelOrder('user'); $this->registry->redirectUser( 'useraccount', 'Order cancelled', 'The order has been cancelled', $admin = false ); } else { $this->registry->redirectUser( 'useraccount', 'Invalid order', 'The order was not cancelled as it was not tied to your account', $admin = false ); } } else { $this->registry->redirectUser( 'useraccount', 'Invalid order', 'The order was not found', $admin = false ); } } Expansion As our needs for our store grow, we can expand this area of the framework; perhaps we would like it to offer: Returns handling: This will let our customers indicate if they wish to return an item. The store administrator can provide a returns authorization number, and the return can be processed, with the customer being updated. Product recommendations: This will let us display products that are recommended to the customer, based on previous orders. • • This material is copyright and is licensed for the sole use by jackie tracey on 23rd February 2010 953 Quincy Drive, , Brick, , 08724 Chapter 12 [ 257 ] A feedback area: This will let us improve the framework by collecting the general feedback from customers. Exclusive discounts: Incentives for customers! Advance notice on pre-releases: This will let us entice customers to make pre-orders. Summary In this chapter, we have created a centralized customer area, which allowed customers to update their password, update their default delivery address, and list their orders and their statuses. We have also created an orders model, which we used to allow customers to view individual orders, as well as cancel existing orders. We also looked into how we might expand the customer area to make it better, providing more value to the customer. This provides a nice, convenient place for the customer to manage their account, the information stored by our site on them, and see an overview of all their pending and processed orders at a glance, to see what is happening with them. • • • This material is copyright and is licensed for the sole use by jackie tracey on 23rd February 2010 953 Quincy Drive, , Brick, , 08724 . buildFromTemplates('header.tpl .php& apos;, 'account/confirm-cancel.tpl .php& apos;,'footer.tpl .php& apos;); require_once( FRAMEWORK_PATH . 'models/order/model .php& apos;); $this->order. and is licensed for the sole use by jackie tracey on 23rd February 2010 953 Quincy Drive, , Brick, , 08724 Chapter 12 [ 255 ] We return false to indicate that the order was not cancelled, allowing. licensed for the sole use by jackie tracey on 23rd February 2010 953 Quincy Drive, , Brick, , 08724 User Account Features [ 254 ] This requires some functionality in our order model to cancel