WEBVTT 00:00.020 --> 00:02.390 So I hope you gave this small challenge a go. 00:02.390 --> 00:07.280 And the goal is just to populate the code in both of these different methods. 00:07.310 --> 00:09.830 We'll start off in the calculate delivery fee. 00:09.860 --> 00:11.270 Pretty straightforward this one. 00:11.270 --> 00:19.910 We just need to return the subtotal check to see if this is greater than 10,000 which represents $100. 00:20.030 --> 00:22.850 If it is then we return zero. 00:22.880 --> 00:27.110 Otherwise we return 500 which equates to $5. 00:27.110 --> 00:28.970 So that one's pretty straightforward. 00:28.970 --> 00:32.300 The next one in the create order items. 00:33.500 --> 00:39.470 This one slightly trickier, but we'll create a variable to store our list of order items in. 00:39.470 --> 00:48.110 So we'll say var order items is a new list of type order item and add parentheses there. 00:49.010 --> 00:53.360 And we're passing in as a parameter here our list of items. 00:53.360 --> 00:59.360 So we need to loop over each of the items in that list in order to create each order item. 00:59.360 --> 01:00.770 So that's going to look like this. 01:00.770 --> 01:02.750 So we'll use a for each statement. 01:02.750 --> 01:07.220 And we can say var item in items that we pass in as a parameter. 01:08.150 --> 01:12.740 Now, one thing that we haven't talked about yet, which I understand if you missed this because I didn't 01:12.740 --> 01:20.330 even give a hint about this, it'd be a good idea to check to see if we have the quantity in stock of 01:20.330 --> 01:22.310 the item they wish to purchase. 01:22.310 --> 01:27.860 So we'll do a check inside here, and we're going to check to see if item dot product dot quantity in 01:27.860 --> 01:30.920 stock is less than the item dot quantity. 01:30.950 --> 01:38.900 Then at this point we will return null and in order to return null from this method, we would need 01:38.900 --> 01:40.610 to make this optional. 01:41.540 --> 01:47.360 So if you didn't have this check in there now, then please add this check as I'm going through this 01:47.360 --> 01:48.290 solution. 01:48.440 --> 01:51.200 The next thing we'll do is create the order item. 01:51.200 --> 01:55.430 So I'm going to say var order item equals new order item. 01:55.730 --> 02:03.470 And inside here we can say item ordered equals and then use new product item ordered. 02:03.980 --> 02:09.110 And inside here we can specify the product ID is equal to the item dot product id. 02:09.890 --> 02:17.160 The picture URL is equal to the item dot picture URL or product dot picture URL. 02:17.190 --> 02:22.830 I should say, and the name is going to be equal to the item dot product dot name. 02:22.830 --> 02:24.180 And then we can add a comma. 02:24.180 --> 02:28.830 We can set the price and set this equal to the item dot product dot price. 02:29.370 --> 02:36.990 The quantity we can set to the item dot quantity and then add a semicolon after this. 02:36.990 --> 02:42.120 And then we can add to the order items we created above. 02:42.150 --> 02:51.900 We can specify order items dot adds, and we can pass in the order item we have just created. 02:52.920 --> 02:56.520 And then we can also again I didn't mention the stock. 02:56.550 --> 02:59.130 So bonus points if you did get this bit. 02:59.340 --> 03:00.840 If not, please just add it. 03:00.840 --> 03:04.200 Now we're going to set the quantity in stock for the item. 03:04.200 --> 03:07.350 So we'll say item dot products, dot quantity and stock. 03:07.350 --> 03:12.060 And then we're going to deduct the item quantity from this. 03:12.060 --> 03:15.300 So we'll say minus equals item dot quantity. 03:15.990 --> 03:20.910 And then we can return the order items. 03:21.480 --> 03:30.690 And we've got a warning inside here, and that will be due to the optional nature of these items. 03:30.690 --> 03:36.420 So we need to add a defensive check here where we create the order items. 03:36.420 --> 03:39.690 And we're going to check to see if the items is equal to null. 03:39.720 --> 03:50.190 Then we're going to return a bad request and say some items out of stock okay. 03:50.190 --> 03:57.660 So that covers the code that we need in our orders controller for the order creation. 03:57.660 --> 03:59.730 Quite a chunky bit of code to do this. 03:59.730 --> 04:04.260 So what we'll take a look at next is testing our ability to create an order. 04:04.260 --> 04:05.940 And we'll see how it goes. 04:05.940 --> 04:14.430 And based on what we know from what we did earlier regarding the use of Dtos and how Entity Framework 04:14.730 --> 04:15.240 or our. 04:15.390 --> 04:21.690 Net controllers serialize the data, we may well run into problems with how we've configured our entities. 04:21.690 --> 04:27.840 So we'll test the order creation, and then we'll take a look at shaping the data if we need to based 04:27.840 --> 04:30.390 on what we return from these different endpoints. 04:30.390 --> 04:31.890 And that's coming up next.