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CHAPTER 9 CHECKOUT AND ORDER PROCESSING
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Figure 9-13. The view orders page displaying all orders If you navigate to the page that shows processed orders (http://localhost:3000/admin/ order/processed), you ll see orders that the system has sent to the payment gateway, but which George still needs to ship to the customer and close. An example of this page is shown in Figure 9-14.
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Figure 9-14. The view orders page showing only processed orders
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Note For the administrator user stories, we won t walk through functional and integration tests. At this
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point, you should be familiar with developing these tests and able to write them all by yourself.
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CHAPTER 9 CHECKOUT AND ORDER PROCESSING
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Implementing the View Order User Story
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The order details page is where George can see the information about the order. He needs to check this page before he ships the books to the customer. The page will show the customer s contact information and shipping address. Furthermore, we need to display the order details in other words, the books that the customer has ordered. The credit card details are needed only by the payment gateway, and keeping them in our database would be a huge security risk. Open app/controllers/order_controller.rb and replace the empty show action with the following code: def show @page_title = "Displaying order ##{params[:id]}" @order = Order.find(params[:id]) end The action simply pulls out the specified order from the database and sets the page title. Next, create the view by saving the following code in app/views/admin/order/show.rhtml: <%= render :partial => 'navigation' %> <p> Order total $<%= @order.total %> </p> <h2>Contact Information</h2> <dl> <dt>ID</dt> <dd><%= @order.id %></dd> <dt>Email</dt> <dd><%= @order.email %></dd> <dt>Phone number</dt> <dd><%= @order.phone_number %></dd> </dl> <h2>Shipping Address</h2> <dl> <dt>First name</dt> <dd><%= @order.ship_to_first_name %></dd> <dt>Last name</dt> <dd><%= @order.ship_to_last_name %></dd> <dt>Address</dt> <dd><%= @order.ship_to_address %></dd> <dt>City</dt> <dd><%= @order.ship_to_city %></dd> <dt>Postal/Zip code</dt> <dd><%= @order.ship_to_postal_code %></dd> <dt>Country</dt> <dd><%= @order.ship_to_country %></dd> </dl>
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CHAPTER 9 CHECKOUT AND ORDER PROCESSING
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<h2>Order Details</h2> <% for item in @order.order_items %> <%= link_to item.book.title, :action => "show", :controller => "catalog", :id => item.book.id %> <%= pluralize(item.amount, "pc", "pcs") %>, $<%= item.price * item.amount %></br> <% end %> <p> <%= button_to "Close Order", :action => 'close', :id => @order unless @order.closed %> </p> At the top of the page, we show the navigation and order total. Next, we show the contact information, shipping address, and order details sections. At the bottom, we display a button that allows George to close the order, but only if the order hasn t been closed already, which is checked by calling the closed method on the Order model. Note that the page will generate an error until we have added the code shown here to the Order model (app/models/order.rb): def closed status == 'closed' end Let s perform an acceptance test. Click the View button from the view orders page (shown in Figures 9-13 and 9-14). You should now see the order details, as shown in Figure 9-15.
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Figure 9-15. The order details page displaying a test order
CHAPTER 9 CHECKOUT AND ORDER PROCESSING
Implementing the Close Order User Story
The Close Order user story is the last one we ll implement in this sprint. It is used by George (after he has shipped the order) to set the order status to closed. The user story requires that we change the close action in order_controller.rb as follows: def close order = Order.find(params[:id]) order.close flash[:notice] = "Order #{order.id} has been closed" redirect_to :action => 'index', :id => 'closed' end The code finds the specified order and calls the close method on the Order model (app/models/order.rb): def close self.status = 'closed' save! end This method sets the status to closed and saves the order. After this, the action sets a flash message and redirects to the Closed section of the view orders page. Test the Close Order user story by closing an order. View the details of a processed order (click the View button for the transaction on the view orders page), and you should see the Close Order button at the bottom of the order details page, as shown in Figure 9-16. Click the Close Order button, and you are redirected to the page shown in Figure 9-17. This ends our implementation of the checkout and order-processing functionality. However, you still need to take into account two other items when processing orders: shipping costs and taxes. We ll take a brief look at those calculations next.
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