1 00:00:00,810 --> 00:00:04,890 In this video, let's implement delete functionality. 2 00:00:05,130 --> 00:00:07,980 Let's change the comments to delete posts. 3 00:00:08,250 --> 00:00:11,250 Let's try the endpoint and make sure that it's working. 4 00:00:11,250 --> 00:00:12,570 And this is the delete. 5 00:00:12,600 --> 00:00:15,690 Let me hit send and now I have the root. 6 00:00:15,690 --> 00:00:17,490 Been working perfectly. 7 00:00:17,520 --> 00:00:19,470 So what are the steps? 8 00:00:19,800 --> 00:00:25,500 Well, the steps are going to be pretty simple as the way we create a post. 9 00:00:25,530 --> 00:00:31,550 So first is we need to find the ID of the post that we want to delete. 10 00:00:31,560 --> 00:00:33,480 So here we go. 11 00:00:33,510 --> 00:00:39,660 So first is find the OR, get the ID, get the ID. 12 00:00:39,660 --> 00:00:47,040 And as we did before, the ID can be found under rec dot params dot ID. 13 00:00:47,610 --> 00:00:52,740 Then after that we are going to find the post by ID inside the post data. 14 00:00:52,800 --> 00:01:01,080 So now inside the root here, let's filter out all the posts with a specific id so accounts. 15 00:01:01,080 --> 00:01:04,050 And now call this one as filtered post. 16 00:01:05,720 --> 00:01:08,600 And is equal to the posts array. 17 00:01:08,600 --> 00:01:15,440 On that we have a method called floater and for this function we pass in a callback function. 18 00:01:15,440 --> 00:01:17,300 Let me use normal function here. 19 00:01:17,570 --> 00:01:22,400 So inside a function body we can go ahead and implement the logic. 20 00:01:22,400 --> 00:01:29,510 So here we can retain a post dot id maybe guessing where is the ID? 21 00:01:29,540 --> 00:01:36,680 If you can still log the posts inside the callback function, we're going to have the individual post, 22 00:01:36,680 --> 00:01:41,060 so let's check it out and see back to Postman Hit St. 23 00:01:41,060 --> 00:01:45,980 And now we see that these are the individual posts and we have an ID. 24 00:01:46,280 --> 00:01:52,700 So back to the root here for the returning if the ID is. 25 00:01:53,870 --> 00:01:58,220 Equal to the ID in the params, then it means that it's been found. 26 00:01:58,220 --> 00:02:07,820 So let's go ahead and then console that log the filtered posts favorited posts as that. 27 00:02:07,820 --> 00:02:09,740 This one down here. 28 00:02:10,100 --> 00:02:13,260 Oh, it must be in the root server. 29 00:02:13,790 --> 00:02:15,140 I always make mistake. 30 00:02:15,200 --> 00:02:20,570 So now let's go ahead and make the request and see hit st. 31 00:02:20,570 --> 00:02:25,820 And now we see empty array because the ID is not found. 32 00:02:25,820 --> 00:02:28,520 So let's use ID that exists. 33 00:02:28,520 --> 00:02:29,720 Let's see one. 34 00:02:29,720 --> 00:02:32,960 Let me cancel the request and send again. 35 00:02:32,960 --> 00:02:40,730 Now indeed I have the post that has been fetched, but what you want to do is that you want to display 36 00:02:40,730 --> 00:02:43,310 all posts, which is not this. 37 00:02:43,310 --> 00:02:45,350 So there is implementation. 38 00:02:45,530 --> 00:02:50,750 So here instead of this I'm going to make use of it's not ID. 39 00:02:51,370 --> 00:02:58,260 Meaning that you won't find all posts which is not equal to the ID in the params. 40 00:02:58,270 --> 00:03:04,030 So now with this one, if we send again now I'm going to see array of posts. 41 00:03:04,360 --> 00:03:11,860 You can see that we have all the posts with exception of the post with ID of one meaning that we have 42 00:03:11,860 --> 00:03:13,150 filtered out that. 43 00:03:13,150 --> 00:03:20,680 So now that we get this one, we can go ahead and then re update the file, meaning rewrite the content 44 00:03:20,680 --> 00:03:21,640 onto the file. 45 00:03:21,760 --> 00:03:23,410 So here we go. 46 00:03:23,530 --> 00:03:29,050 As we did for creating, we can copy the same functionality and bring it here. 47 00:03:29,230 --> 00:03:37,060 So let's look at create post here, which is this and we want this function that saves a content onto 48 00:03:37,060 --> 00:03:37,540 a file. 49 00:03:37,540 --> 00:03:44,020 So let me collapse this one and then copy this one and now I'm back to delete down here. 50 00:03:44,020 --> 00:03:51,610 Let me paste it now instead of post data here we are passing in the filtered post and that is it. 51 00:03:51,610 --> 00:03:52,840 And that is it. 52 00:03:52,840 --> 00:03:55,150 So here is our. 53 00:03:56,100 --> 00:03:58,140 I start to two. 54 00:03:58,470 --> 00:04:00,230 So now we are done with it. 55 00:04:00,240 --> 00:04:08,400 So let me try again and hit St and Nancy that post created but instead is post deleted. 56 00:04:08,400 --> 00:04:12,930 So here post deleted the message. 57 00:04:13,860 --> 00:04:19,050 But if you check the file, we see that we don't have that post. 58 00:04:19,050 --> 00:04:20,279 Now we have two posts. 59 00:04:20,490 --> 00:04:25,680 Let's say I want to delete this post, I'll provide the of 2022. 60 00:04:25,680 --> 00:04:30,240 So here we go and provide 2020 to 2020. 61 00:04:30,240 --> 00:04:31,860 Sorry 2020. 62 00:04:32,160 --> 00:04:35,010 So hit st and now post deleted. 63 00:04:35,070 --> 00:04:36,060 You see that. 64 00:04:36,060 --> 00:04:40,170 Let me check the file and now we have one post. 65 00:04:40,170 --> 00:04:44,640 And if I make a request to fetch a post, I have one post. 66 00:04:44,640 --> 00:04:46,090 So this is how we can work. 67 00:04:46,110 --> 00:04:47,370 Delete a post. 68 00:04:47,610 --> 00:04:51,680 Let me add more post in the mix by creating this now post credit. 69 00:04:51,690 --> 00:04:58,110 If I check the file now I have to post the last CRUD operation is what we call update. 70 00:04:58,110 --> 00:05:02,790 So let's see how we can update the post inside our route.