WEBVTT 00:00.000 --> 00:04.110 Okay, let's next take a look at editing a product in this lesson. 00:04.110 --> 00:06.060 And we'll head back to VS code. 00:06.060 --> 00:10.620 And we're going to create a DTO for editing of a product. 00:10.620 --> 00:13.410 So I'll just close all of this stuff down for the time being. 00:13.410 --> 00:18.810 We'll go to our DTO folder and we'll create a new file that's going to be a class. 00:18.810 --> 00:22.560 And we'll call it Update Product DTO. 00:23.040 --> 00:25.680 And what do we need inside here for the properties? 00:25.680 --> 00:28.020 Well, we need all of this effectively. 00:28.020 --> 00:32.040 And we can also include the ID with this as well. 00:32.040 --> 00:36.450 So to save a bit of time and duplication we can come to our update product DTA. 00:36.450 --> 00:40.170 And we can just derive from our create product DTO. 00:40.170 --> 00:45.780 And then we can just specify a prop int of ID inside here. 00:45.780 --> 00:48.060 And this is what we'll use for updating. 00:48.060 --> 00:54.810 So when we do update a product we're going to send the ID along with the product and use that to go 00:54.810 --> 00:59.370 and get the entity, the product entity from our database. 00:59.370 --> 01:05.680 So we need a new mapping inside our mapping profiles to go from an update product DTO to a product. 01:05.680 --> 01:13.870 So I'll just copy this line down and swap create product DTO for update product DTO going into a product. 01:13.870 --> 01:20.830 And then we can go to our product controller and we'll create a new endpoint for updating. 01:21.520 --> 01:29.020 So below the HTTP post I'll create an HTTP put which is what we use for updating a resource. 01:29.020 --> 01:35.860 And we're going to make this authorized once again for roles and specify admin. 01:36.940 --> 01:40.840 And we'll use public async task. 01:41.230 --> 01:43.690 And what do we return from an update. 01:43.720 --> 01:49.780 Well nothing because our client is sending us the information about the thing that we're updating. 01:49.780 --> 01:54.280 So we expect the client to have all the details about the updated product. 01:54.280 --> 01:58.420 So there's no point in sending the updated product back to the client. 01:58.420 --> 02:03.150 So we're just going to use Actionresult result here without returning a type. 02:03.720 --> 02:05.910 And we'll call this update products. 02:05.910 --> 02:13.800 And we're going to take in our update products DTO and call it Update product DTO. 02:14.730 --> 02:19.410 And inside here we're going to get hold of our product first of all from the database. 02:19.410 --> 02:25.500 So we'll use var products equals await context dot products. 02:25.500 --> 02:33.900 And we can use the find async because we do have the ID and we can specify the update product dto.id. 02:33.900 --> 02:36.360 And we need to check to make sure we have the product. 02:36.360 --> 02:43.230 So we're going to say if product is equal to null then we're going to return not found from this method. 02:43.290 --> 02:53.280 And then we can use our Automapper to map from the update product DTO into the product, and effectively 02:53.280 --> 02:59.220 updates the product entity that we're now tracking in memory. 02:59.220 --> 03:06.710 So we can use mapper dot map and we'll pass in the product DTO or the update product DTO where we're 03:06.710 --> 03:13.190 going to map from, and then where we're going to map to, which in this case is going to be the product. 03:13.190 --> 03:19.460 So our product at this stage in memory Entity Framework's tracking, this is going to have the updated 03:19.460 --> 03:24.530 properties from this object populated inside this object. 03:24.530 --> 03:27.740 And then we can just save our changes into the database. 03:27.740 --> 03:31.340 So I'll just copy this line from the method above. 03:31.340 --> 03:37.430 Paste that in and then we can check to make sure we have the result. 03:37.430 --> 03:44.090 So if we have the result then we can return from this method no content which is a successful request, 03:44.090 --> 03:49.790 but we're just explicitly stating that there's no content inside this request because it's an update 03:49.790 --> 03:52.010 and we do not have to send anything back. 03:52.130 --> 04:04.340 Otherwise we're going to return a bad request and just say A problem updating products and that's what 04:04.340 --> 04:05.600 we need for our update method. 04:05.600 --> 04:06.980 So let's check the terminal. 04:06.980 --> 04:10.280 And this time it's telling us we do need to restart our API. 04:10.310 --> 04:13.220 So let's go ahead and do just that. 04:13.220 --> 04:18.290 And once that has restarted we'll just go across to postman and we'll do another test. 04:18.290 --> 04:20.990 So we've got an edit product method here. 04:20.990 --> 04:28.610 We're sending up the name description price etc. but I have updated the name to whatever that is updated, 04:28.640 --> 04:33.830 which will allow us to confirm that the product has indeed been updated. 04:33.830 --> 04:41.840 And I've got the URL wrong inside here that needs to be not that one, and I'm missing the ID inside 04:41.840 --> 04:44.330 here, so we need the ID property. 04:44.360 --> 04:45.710 The way that we're doing this. 04:45.740 --> 04:50.900 Obviously I've changed my mind about how this is going to work since I originally did the testing, 04:50.900 --> 04:56.480 and we need ID of 1002, the ID of the product that we did just create. 04:56.480 --> 05:02.360 So I'll save this, but do double check the ID that you're using here and make sure it matches whatever 05:02.360 --> 05:04.190 the ID of the product you've got back. 05:04.190 --> 05:08.030 Or if you just want to update one of the original seeded products, you can do that too. 05:08.030 --> 05:12.140 But I'm going for this particular update, the one that I've just created. 05:12.320 --> 05:16.730 And let's send this request and see what happens. 05:17.180 --> 05:20.270 And we get the picture URL field is required. 05:20.270 --> 05:25.280 So I also need to specify this because of the way that we've configured the DTO. 05:25.310 --> 05:27.800 We also need the picture URL in here. 05:27.830 --> 05:34.460 Again you won't need to do this yourself because I will have saved these changes into the version of 05:34.460 --> 05:36.710 the postman collection that I'm giving you. 05:36.710 --> 05:44.390 So I'm just going to go back to the create product, and I'll just use the same picture URL I had there 05:44.930 --> 05:50.000 and go back to the edit products and paste that in there. 05:50.030 --> 05:52.130 Add the comma and great. 05:52.160 --> 05:52.910 Okay. 05:52.940 --> 05:55.880 So I'll click send again. 05:56.930 --> 06:02.640 And we've got an issue with the price I haven't met the validation of this, so I can presume that the 06:02.640 --> 06:10.560 random int here created a random int that was less than a hundred, because this creates a random integer 06:10.560 --> 06:12.180 between 0 and 100. 06:12.210 --> 06:16.980 I'm just going to hardcode a value inside here so that I don't have to mess around with this. 06:16.980 --> 06:22.440 So I'm just going to say 2000 in this case for the price of whatever this is. 06:22.470 --> 06:24.120 And I'll click send again. 06:24.120 --> 06:27.120 And this time we get the 204 no content. 06:27.150 --> 06:36.480 So if I go back to the, well, let's get the product and we'll get the product with the ID of 1002. 06:36.510 --> 06:44.880 And I'll click send and we get the updated version of this because we can see the updated word there. 06:44.880 --> 06:50.310 So our updating of an entity is working as well. 06:50.310 --> 06:56.610 And next we'll take a look at the other option we've not looked at in Crud operations which is the D. 06:56.850 --> 06:59.310 And that means deleting an entity.