1 00:00:08,039 --> 00:00:13,080 In this video, let's connect our application to MongoDB. 2 00:00:13,230 --> 00:00:19,200 But before we get into that, in the previous video, I gave this one to you as a challenge that is 3 00:00:19,200 --> 00:00:25,820 refactor to the account and then the transaction route use MVC design pattern. 4 00:00:25,830 --> 00:00:32,009 If you couldn't solve it, don't worry, I have provided a source code for it and better so we will 5 00:00:32,009 --> 00:00:36,510 revisit the controls as we implement the actual logic. 6 00:00:36,600 --> 00:00:41,550 So for this video, let's go ahead and then connect to MongoDB. 7 00:00:41,730 --> 00:00:47,370 I assume that you have your MongoDB connection string ready if you don't have it. 8 00:00:47,370 --> 00:00:51,910 I advise you to watch the section and get in connection string. 9 00:00:51,930 --> 00:00:57,060 So with that being said, first step is let's go ahead and then install Mongoose. 10 00:01:11,980 --> 00:01:14,230 Now Mongoose has finished installing. 11 00:01:14,260 --> 00:01:19,670 Next is let's restart our server and let's continue the implementation. 12 00:01:19,690 --> 00:01:23,350 So here we go inside the config folder. 13 00:01:23,380 --> 00:01:27,790 Let's create one file and call this one as DB connect. 14 00:01:29,460 --> 00:01:30,690 It's genius. 15 00:01:31,440 --> 00:01:35,640 And inside this fire, let's require the mongoose package. 16 00:01:42,080 --> 00:01:46,490 The next step is let's create the function to connect to TV. 17 00:01:46,760 --> 00:01:47,750 So here we go. 18 00:01:47,750 --> 00:01:48,050 And. 19 00:02:02,080 --> 00:02:08,080 And for this it takes in the connection string and this is my connection string. 20 00:02:08,080 --> 00:02:10,930 So I would paste it here as that. 21 00:02:10,930 --> 00:02:16,570 And for this one I want to name my database by using what is called. 22 00:02:22,490 --> 00:02:23,680 A save it. 23 00:02:23,690 --> 00:02:24,110 Great. 24 00:02:24,110 --> 00:02:29,450 So inside the cat, in case something goes wrong, let's go ahead and then console.log. 25 00:02:29,450 --> 00:02:34,130 The actual error on that we have the message. 26 00:02:38,010 --> 00:02:45,240 And if you couldn't connect, let's go ahead and then exit our server that is processed dot exit and 27 00:02:45,240 --> 00:02:48,600 you pass in one for exiting the application. 28 00:02:48,780 --> 00:02:51,540 And here in case everything goes right. 29 00:02:51,570 --> 00:02:58,170 Let's go ahead and say that DB connected successfully. 30 00:03:01,230 --> 00:03:02,070 All right. 31 00:03:02,340 --> 00:03:08,760 So for this, I want to call the function automatically here without exporting it, meaning that as 32 00:03:08,760 --> 00:03:12,210 soon as I require this file, this function will be run. 33 00:03:12,360 --> 00:03:16,170 So let's go ahead and then require it inside the server. 34 00:03:16,170 --> 00:03:18,070 And this is how I'm going to require it. 35 00:03:18,090 --> 00:03:23,220 So going to be as required and then goes for this last config. 36 00:03:23,220 --> 00:03:25,820 And inside there we have the DB connect. 37 00:03:25,830 --> 00:03:29,400 Now let's check our terminal and let's have a look. 38 00:03:29,490 --> 00:03:32,390 You can see that we have some error connecting. 39 00:03:32,400 --> 00:03:34,560 So let's look at the connection string. 40 00:03:34,560 --> 00:03:41,730 Well, in case you're not doing something right, oh, I have to remove the additional code around it, 41 00:03:41,850 --> 00:03:43,430 and that is it. 42 00:03:43,440 --> 00:03:45,150 Let's check it out and see. 43 00:03:45,450 --> 00:03:49,460 Moment of truth and there we go. 44 00:03:49,470 --> 00:03:54,390 DB Connected successfully, so now we are done with that one. 45 00:03:54,660 --> 00:04:02,160 Guys, before we continue, I have changed the part from 9000 to 8080 because that part, which is 10,000, 46 00:04:02,190 --> 00:04:06,120 is being used by different application on my operating system. 47 00:04:06,120 --> 00:04:07,560 So that is it. 48 00:04:07,680 --> 00:04:13,200 So next step is that let me show you how I'm going to use the extension code MongoDB. 49 00:04:13,290 --> 00:04:21,060 If we install the extension that is MongoDB for VTS code, click on that and here click on Add connection. 50 00:04:21,060 --> 00:04:24,570 And for this, let's bring in our connection string. 51 00:04:24,570 --> 00:04:29,580 So let me copy and let's go to the extension and click on Connect. 52 00:04:29,670 --> 00:04:30,480 Click on that. 53 00:04:30,480 --> 00:04:37,170 And here it says that paste the connection string and let me go ahead and then paste that and hit enter. 54 00:04:37,560 --> 00:04:40,260 Now something is going to happen. 55 00:04:40,320 --> 00:04:44,490 Let's wait a there we go. 56 00:04:44,520 --> 00:04:46,290 You can see that connected. 57 00:04:46,500 --> 00:04:51,630 So let's click on the extension and here is my database. 58 00:04:51,630 --> 00:05:00,450 So here we can visualize what is going on inside our database right inside Visual Studio code in the 59 00:05:00,450 --> 00:05:01,230 next video. 60 00:05:01,230 --> 00:05:06,450 Let's go ahead and then model our data for this particular application.