1 00:00:01,130 --> 00:00:06,500 In this video, we are going to create a controller to update a comment. 2 00:00:06,530 --> 00:00:11,020 Again, the concept is going to be the same for updating a post. 3 00:00:11,030 --> 00:00:15,290 So let's get into post and let's copy the logic. 4 00:00:15,290 --> 00:00:17,540 So this is the update. 5 00:00:17,540 --> 00:00:24,860 So inside the try, I'm going to copy the entire logic as that. 6 00:00:24,860 --> 00:00:32,990 And back to the command controller, which is this and let's collapse this and here is the implementation 7 00:00:33,110 --> 00:00:34,430 I'm going to paste. 8 00:00:34,430 --> 00:00:35,840 The one I copied. 9 00:00:36,080 --> 00:00:39,140 The first step is find the comment. 10 00:00:39,530 --> 00:00:44,060 So let me change this one to find the comment. 11 00:00:45,050 --> 00:00:46,580 Likewise this. 12 00:00:48,130 --> 00:00:53,410 And then check if the comment belongs to the user. 13 00:00:53,530 --> 00:00:54,100 All right. 14 00:00:54,100 --> 00:00:59,320 So the same concept here, we are going to find the comment by ID. 15 00:00:59,350 --> 00:01:05,740 So here is going to be the comment model and here is going to be comment. 16 00:01:06,430 --> 00:01:13,630 And on the comment, we have the user and then we are comparing to the look in user, which is this. 17 00:01:13,630 --> 00:01:18,070 The message would be you are not allowed to update this comment. 18 00:01:20,300 --> 00:01:25,760 And if everything goes right, then you go ahead and update the comment. 19 00:01:25,760 --> 00:01:29,750 And here is going to be as the comments update updated. 20 00:01:33,160 --> 00:01:33,670 All right. 21 00:01:33,670 --> 00:01:36,040 And let's send that. 22 00:01:37,550 --> 00:01:38,660 For this one. 23 00:01:38,660 --> 00:01:44,870 We are not uploading any image, so let's remove this and let's remove the category. 24 00:01:44,960 --> 00:01:46,850 What we want is a message. 25 00:01:46,850 --> 00:01:53,270 So going to be the message and the value can be found on the rec, the body, the message. 26 00:01:54,110 --> 00:01:55,650 All right, that is it, guys. 27 00:01:55,670 --> 00:01:59,270 Again, we need to put this one behind authentication. 28 00:01:59,270 --> 00:02:02,780 So let me send the error here in case we have one. 29 00:02:02,780 --> 00:02:12,320 So next and pass in the app error and then the actual message, could it be error message? 30 00:02:12,320 --> 00:02:14,840 So let's pass next into this. 31 00:02:15,860 --> 00:02:18,380 Likewise the delete. 32 00:02:18,410 --> 00:02:32,060 Let's go to pass next into that and inside here pass next and then the app error and error message or 33 00:02:32,060 --> 00:02:38,330 we can we pass in the entire error so let's remove this one to make it as error. 34 00:02:38,900 --> 00:02:39,620 All right. 35 00:02:39,620 --> 00:02:40,770 So that is it. 36 00:02:40,790 --> 00:02:43,730 What about the fetching single? 37 00:02:43,760 --> 00:02:55,610 Let's also pass in the next and then here, let's send the error by calling next, then pass in the 38 00:02:55,610 --> 00:03:00,590 app error and then the message, the error into that. 39 00:03:00,920 --> 00:03:01,670 All right. 40 00:03:01,670 --> 00:03:03,000 What about the details? 41 00:03:03,020 --> 00:03:09,980 Let's also pass the next here and let's copy this one going to be the same concept. 42 00:03:10,400 --> 00:03:11,110 Okay. 43 00:03:11,120 --> 00:03:12,820 So moment of truth. 44 00:03:12,830 --> 00:03:15,680 Let's go ahead and update a comment. 45 00:03:16,040 --> 00:03:20,720 So let's create a new comment with the same value as good. 46 00:03:20,720 --> 00:03:31,280 Let's copy this ID and click on Update and let's provide the ID again, let's put the end points behind 47 00:03:31,280 --> 00:03:34,000 authentication for update, which is this. 48 00:03:34,010 --> 00:03:36,140 We're going to be as protected. 49 00:03:36,740 --> 00:03:46,220 So let's pass in the message as that and now change this one to the best and hit send. 50 00:03:47,710 --> 00:03:51,130 Well, I got an error, so let's have a look. 51 00:03:51,640 --> 00:03:54,130 Well, app error is not defined. 52 00:03:54,130 --> 00:04:00,130 Meaning less require the app error inside the controller of comment. 53 00:04:00,430 --> 00:04:07,570 So here const app error is equal to required. 54 00:04:10,010 --> 00:04:14,480 And inside the utils then app error. 55 00:04:15,540 --> 00:04:17,160 All right, so let's hit send. 56 00:04:17,760 --> 00:04:22,740 Well, you got this error meaning that cannot read properly of user list. 57 00:04:22,740 --> 00:04:25,440 Locate which line of code comments. 58 00:04:25,440 --> 00:04:27,150 Line number 92. 59 00:04:27,420 --> 00:04:38,370 So command, line number 92 for update, which is this This error was called meaning a kind of find 60 00:04:38,370 --> 00:04:41,100 the user on the comment. 61 00:04:41,280 --> 00:04:43,500 So what is the problem? 62 00:04:44,100 --> 00:04:47,330 Let's console.log the comment. 63 00:04:47,340 --> 00:04:50,280 So let's see what is inside the comments. 64 00:04:50,280 --> 00:04:51,990 So let's click on send. 65 00:04:52,080 --> 00:04:53,910 Let's check the terminal. 66 00:04:54,360 --> 00:05:02,430 And we got undefined meaning that there is no comment being found so we can even make a check. 67 00:05:02,430 --> 00:05:05,490 If there is no comment, then we can throw an error. 68 00:05:05,490 --> 00:05:06,120 Right. 69 00:05:06,120 --> 00:05:15,180 So here before we go ahead and then update, we are going to check if there is no comment, then we 70 00:05:15,180 --> 00:05:24,090 are going to return and call next, then pass in the app error the message by saying that comment not 71 00:05:24,090 --> 00:05:24,660 found. 72 00:05:29,120 --> 00:05:34,820 All right, So with this one, we can get beautiful message as comment not found. 73 00:05:34,820 --> 00:05:39,680 So let's check the route for comment and let's see if you have the ID. 74 00:05:39,710 --> 00:05:41,990 Yes, we have it as that. 75 00:05:41,990 --> 00:05:46,460 So let's go ahead and then create a new comment. 76 00:05:46,580 --> 00:05:52,190 So let me change this one to excellent and hit send. 77 00:05:53,540 --> 00:06:02,690 Now we have a comment being created so our copy the ID of this comment and I'll provide the ID for the 78 00:06:02,690 --> 00:06:04,520 update and hit send. 79 00:06:05,830 --> 00:06:09,130 And it has been updated successfully. 80 00:06:09,340 --> 00:06:10,210 All right, guys. 81 00:06:10,210 --> 00:06:18,550 So here ends the entire API for the blog application and you can improve this API if you want. 82 00:06:18,670 --> 00:06:23,670 What has left is how we can connect the API to the front end. 83 00:06:23,680 --> 00:06:26,140 So let's get into that in the next video.