WEBVTT 00:01.070 --> 00:01.610 Okay. 00:01.760 --> 00:08.060 In this video, I will show you how to use another tool for our API development. 00:08.060 --> 00:09.910 And that tool is Postman. 00:09.920 --> 00:16.370 I think it's most popular API development tool available on the market. 00:16.400 --> 00:20.450 Now it is free so you can use it as you like. 00:20.450 --> 00:27.440 And at the beginning I think Postman was ah, just a chrome extension, but now it's a standalone application. 00:27.440 --> 00:33.920 So what you need to do is you go to the product and you have Postman here. 00:35.170 --> 00:40.690 And then you can download the application and it's as simple as just next, next, next, next, and 00:40.690 --> 00:42.940 install that on your operating system. 00:42.940 --> 00:48.010 So once you will have the postman installed on your computer. 00:53.170 --> 00:59.790 Now Postman is opening and we have a data interface available. 01:00.900 --> 01:09.900 So what we can do here, we can do similar things as we've done in our previous video using this interface. 01:09.900 --> 01:13.650 So if I will come back here to the books. 01:15.330 --> 01:18.560 You can see that is the object I saw there. 01:18.570 --> 01:27.210 If I copy that URL now, Ctrl C and I'll go to my postman and then I will paste it here. 01:27.210 --> 01:36.180 So basically what we are doing is we are trying to fetch that data from, from that URL and here I can 01:36.180 --> 01:37.980 select the method I would like to use. 01:37.980 --> 01:41.730 I will keep it to get here and then I will send. 01:43.260 --> 01:52.020 It looks what what I have here in the in the output basically it's what I had in the previous page. 01:52.020 --> 01:57.690 But this time this is a typical Json text format available for me. 01:57.690 --> 02:04.350 This is also based on serializer as we had it before and we see all that information. 02:04.350 --> 02:05.280 So let's. 02:06.170 --> 02:09.800 Come back here and let's add more. 02:10.100 --> 02:17.270 If we go to the models, we have title description, price we can do, publish is published and then 02:17.270 --> 02:18.080 cover. 02:18.800 --> 02:20.810 We can leave the cover for now. 02:20.960 --> 02:24.590 So we'll do this published. 02:25.620 --> 02:27.390 And also we can do. 02:29.110 --> 02:31.180 So publish is published. 02:31.840 --> 02:35.950 If will add it now and then I will come back to the postman and refresh it. 02:35.980 --> 02:43.510 You can see I have all that information available for each book in our database. 02:43.510 --> 02:45.280 So that's one object. 02:45.280 --> 02:46.930 And here is another one. 02:46.930 --> 02:53.410 This brackets square brackets means beginning of array and add of array. 02:53.420 --> 02:56.590 So that's what is available through serializer. 02:56.590 --> 02:58.930 And this is what we use as a get. 02:59.110 --> 03:09.070 What I can also do is I already mentioned that before that Django automatically include ID in our records. 03:09.070 --> 03:13.870 So what I can do is I can also include that ID, so I will save it. 03:14.950 --> 03:17.800 And if will come back here and refresh it, send it again. 03:17.800 --> 03:21.370 You can see it is a part of this output. 03:21.970 --> 03:28.810 So this is the method that we register in our router. 03:28.820 --> 03:36.540 We'll come back to the URLs here and we can see this is register books with a view set. 03:36.550 --> 03:42.100 So this view set brings more than just a list of the items in the database. 03:42.190 --> 03:47.590 It has much more things built in and I will show you what other things are available. 03:47.590 --> 03:57.700 So if we have ID one, I know the books, we have books with ID one and then I can pass one at the end 03:57.700 --> 04:00.460 of the URL and then slash. 04:00.460 --> 04:07.930 So basically books will give me all the list and if I will pass as an extra parameter the ID of the 04:07.930 --> 04:09.880 books, then I will send it. 04:09.880 --> 04:14.690 You can see only one record is returned with the ID one. 04:14.720 --> 04:21.380 I can also do two, which is the second book with the ID two. 04:21.380 --> 04:24.350 So basically that's already done for us. 04:24.350 --> 04:28.940 We don't need to set up or configure anything using Methodget. 04:28.970 --> 04:33.020 We can have both if I will have it without that ID. 04:34.490 --> 04:35.510 The whole list. 04:36.260 --> 04:39.710 We can pass ID and get the certain record. 04:40.160 --> 04:42.020 So what else is available? 04:43.010 --> 04:44.480 We can do post. 04:45.530 --> 04:50.420 So if I will post to the books, we can post. 04:52.090 --> 04:53.170 Using. 04:54.060 --> 04:59.190 Like this form here and I will pick body and then this form. 04:59.190 --> 05:01.200 Or we can do form data. 05:01.770 --> 05:09.810 But what we need to do, we need to pass title and let's say our book will be Twilight. 05:10.840 --> 05:18.580 To just stay him in the same topic as we have here and picking the post here and clicking on send, 05:18.580 --> 05:27.490 I will take this value and I will send it for this URL and this URL accept will accept the post as well. 05:27.490 --> 05:31.360 So if I will send it, you will see it's not going to go through. 05:32.610 --> 05:34.440 Actually it went through. 05:35.040 --> 05:40.880 And because we set up our model to have the default value for everything. 05:40.890 --> 05:47.250 So at the moment we have another record and then we have title return it to us. 05:47.250 --> 05:53.790 So if I will come back from the post to get, and then I would like to see a list of our books in the 05:53.800 --> 06:00.060 system I can go send and I can see here I have three books in the system now. 06:00.060 --> 06:04.110 So what else is available for us? 06:04.590 --> 06:08.190 We can do put, for example, put. 06:08.220 --> 06:09.990 It's not going to work on books. 06:09.990 --> 06:14.270 We need to specify for which record we will use the put method. 06:14.280 --> 06:15.270 Let's say three. 06:15.300 --> 06:23.310 Three is the ID of the the book we've just created here so we can see here three and put will basically 06:23.310 --> 06:26.460 change the our record in database. 06:26.460 --> 06:32.320 So post create a new record like we did here and the put will change it. 06:32.320 --> 06:38.650 So we still need to pass some information so we'll pass it with the body and then I can title Let's 06:38.650 --> 06:41.230 do Twilight Saga. 06:41.740 --> 06:49.090 I don't know something and probably there is a lot of different Twilight saga anyway, if I have put 06:49.090 --> 06:56.350 now and I will say a send it for a book three, which is this one, it was Twilight and then I will 06:56.350 --> 06:57.520 send it like that. 06:57.970 --> 07:03.730 You can see what I did is I've changed the third record with a new title. 07:04.060 --> 07:07.840 So coming back here, I will do get for all the books. 07:07.840 --> 07:13.990 So we'll remove that ID and you can see this is my third. 07:14.810 --> 07:20.900 So put will update the records and you can update it more more than one field. 07:20.900 --> 07:24.710 At the moment we only changing the title, but you can pass any. 07:25.630 --> 07:34.240 Uh, like, let's say price, I will do price here and then we can decide it to 45 price. 07:34.240 --> 07:41.290 And also I need to do three slash and using method put so selling this. 07:42.250 --> 07:48.390 You can see this is our price and this is our title that we pass here. 07:48.400 --> 07:50.590 So I will come back to get. 07:52.290 --> 07:52.770 Books. 07:53.050 --> 07:56.500 Sand and I can see the new record is there. 07:56.520 --> 07:59.430 Well, there's an old record, but with new data. 08:01.000 --> 08:06.210 So we cover already four methods, which is get all, which is the books. 08:06.220 --> 08:16.900 Then you can get a certain record like that with ID and then you can post create new record and you 08:16.900 --> 08:18.580 can put update new record. 08:18.580 --> 08:21.640 Also very important one is the delete one. 08:21.640 --> 08:29.080 So if you would like to remove the one we have created with the ID of three, you just use the delete 08:29.080 --> 08:30.310 method on it. 08:30.310 --> 08:37.300 So we have books slash three and then if I will send it, there is nothing back because actually that 08:37.330 --> 08:42.070 Twilight saga we've created before has been removed to check it. 08:42.070 --> 08:48.310 If that is the case, I can go get and try to list all the books now. 08:49.840 --> 08:50.560 Send it. 08:50.560 --> 08:54.640 And you can see we are having two books in our system. 08:54.640 --> 08:58.620 So the third one has been removed with the delete method. 08:58.630 --> 08:59.740 So that's it. 08:59.740 --> 09:04.210 That's the main method we have on the Http. 09:04.600 --> 09:08.050 Repeating that again, we have five main methods. 09:08.050 --> 09:14.140 So we have get on the books which will give us the whole set of the books. 09:14.140 --> 09:16.630 Then we have get on the specific book. 09:16.660 --> 09:18.850 It will bring us only one record. 09:19.150 --> 09:23.230 Then we have post for creating new record. 09:23.230 --> 09:29.290 Put for updating the current record and delete for removing. 09:29.290 --> 09:35.350 We have others that are not that really popular to use, so I'm not going to talk about them, but you 09:35.350 --> 09:38.800 can read about it and if you would like to use it, you can use it. 09:38.800 --> 09:45.370 But anyway, that's the main five and that and we will use them in our tutorial.