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Lesson 29 - E-shop in ASP.NET Core MVC - Order List

In the previous lesson, E-shop in ASP.NET Core MVC - Tree Menu Editor, we implemented a JavaScript tree menu editor for product categories. In the following two ASP.NET Core tutorials, we're going to work on an order list and changing the order state. Today we're mainly going to prepare necessary methods in the business layer. But let's start with a small modification in the data layer.

EOrder class

The basic information about each order is stored in the EOrder class structure. What we don't have here is the final price of the completed order. Although this price can be calculated because we have both accounting settings and product ids and their status (including price) at the time of purchase, I would not consider storing the total price as an unnecessary data. It's information that we're going to need repeatedly in various operations and it's unnecessary to compute it over and over again.

So let's add a nullable property of the decimal type called FinalPrice to the EOrder class. Of course, we need to perform a migration to update the database.

Modifying the OrderManager

We'll assign the value to the new property at the time of completing the order, ideally in the CompleteOrder() method in OrderManager. After adding the selected delivery method, we can calculate the total price using the GetOrderSummary() method and save it to the current order.

...
order.FinalPrice = GetOrderSummary().Price;
...

The upcoming edits will also be in the business layer.


 

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In this ASP.NET tutorial, we'll prepare a page for administrators to see completed orders and manage their status (we'll prepare the business layer).

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