1 00:00:00,330 --> 00:00:04,770 All right, our user model is almost almost almost ready to go. 2 00:00:05,490 --> 00:00:11,460 The only thing is missing is the validation for email and like already mentioned in previous video, 3 00:00:11,460 --> 00:00:18,390 if you watched the other project, we want you to know what expression we use match property and we 4 00:00:18,390 --> 00:00:19,590 passed in the reject. 5 00:00:20,010 --> 00:00:22,020 However, there is another way how we can do that. 6 00:00:22,570 --> 00:00:28,950 You see, in the Mongoose, we can set up a validate property with two more properties. 7 00:00:28,950 --> 00:00:35,310 So essentially it's an object with two more properties, a validator property where we set up the function, 8 00:00:35,820 --> 00:00:40,140 which is going to be looking for the field and then whatever we return from this function, meaning 9 00:00:40,410 --> 00:00:41,670 either true or false. 10 00:00:42,090 --> 00:00:48,810 That means that either we validate or don't validate the particular property and then we have a message 11 00:00:49,440 --> 00:00:52,020 if, for example, there is an error. 12 00:00:52,500 --> 00:00:56,220 So at the moment in the user, what do we have, what we have? 13 00:00:56,310 --> 00:00:57,300 Please provide email. 14 00:00:57,370 --> 00:01:02,880 But once we set up a validator, we're going to say please provide a valid email of what makes sense. 15 00:01:02,880 --> 00:01:05,670 And if you want to find out more info about this one. 16 00:01:06,090 --> 00:01:07,940 Just go to your -- Knox. 17 00:01:07,980 --> 00:01:12,150 Search for custom validators and you'll see this example. 18 00:01:12,300 --> 00:01:14,610 I said Revalidate validator. 19 00:01:14,790 --> 00:01:15,690 That's the function. 20 00:01:16,410 --> 00:01:18,990 Please keep in mind that you're not invoking this function over here. 21 00:01:19,380 --> 00:01:22,620 You're just setting it up as a reference. 22 00:01:22,890 --> 00:01:30,780 And we also have a message because this function will be invoked when you're trying to create that user 23 00:01:31,080 --> 00:01:32,970 or job or whatever. 24 00:01:33,630 --> 00:01:39,570 And technically, yes, we can set up our own function, but then it's kind of the same like we were 25 00:01:39,570 --> 00:01:40,500 passing in that region. 26 00:01:41,190 --> 00:01:49,620 So another option can do we can get a validator package, which essentially is a very cool library that 27 00:01:49,620 --> 00:01:52,950 has all of those validations already in place. 28 00:01:53,430 --> 00:01:54,840 So let's start with this. 29 00:01:55,290 --> 00:01:59,580 I'm just going to go to a user and I'll add this object first. 30 00:02:00,120 --> 00:02:04,920 So let me go to my email and it's my preference to set it up above unique. 31 00:02:04,950 --> 00:02:09,539 Don't ask me why just a preference and I'm going to go with validate here. 32 00:02:09,539 --> 00:02:13,440 I have the object and then we're looking for validator. 33 00:02:13,680 --> 00:02:14,790 That's going to be my function. 34 00:02:15,180 --> 00:02:17,280 And then the second one will be the message. 35 00:02:17,640 --> 00:02:23,730 And as far as the message, like I said, please provide provide a valid email and then we want out 36 00:02:23,730 --> 00:02:26,970 the column so we don't have any syntax bugs. 37 00:02:27,360 --> 00:02:30,210 And now let's navigate and take a look at the package. 38 00:02:30,450 --> 00:02:36,180 So this is going to be a link and we'll have to install the library at some point as well. 39 00:02:36,540 --> 00:02:43,380 So let me navigate here or these are the docs where basically you can find all of the validators that 40 00:02:43,380 --> 00:02:44,190 they provide. 41 00:02:44,190 --> 00:02:47,250 And then in our case, we're looking for email. 42 00:02:47,730 --> 00:02:53,360 Now, why would you want to use the extension package instead of setting up the function yourself? 43 00:02:53,370 --> 00:02:55,410 Well, this is going to be more battle tested. 44 00:02:56,050 --> 00:02:59,130 It also gives you a bunch of other options as well. 45 00:02:59,370 --> 00:03:01,680 So those would be two reasons why. 46 00:03:01,950 --> 00:03:04,950 Going with external package kind of makes sense. 47 00:03:05,220 --> 00:03:08,220 So we're looking for this is email and what do we need to do? 48 00:03:08,250 --> 00:03:12,930 Well, we need to install first, then we need to import in your address and then we're just going to 49 00:03:12,930 --> 00:03:18,000 go with validator and email and we'll set it here where we have the validator. 50 00:03:18,270 --> 00:03:22,020 So let me stop server and I'm going to go with my command. 51 00:03:22,350 --> 00:03:29,340 So when I install the package, then I'll restart my entire project or npm start. 52 00:03:29,760 --> 00:03:33,990 Then we want to go to a user right below the Mongoose. 53 00:03:33,990 --> 00:03:39,150 So we're going to go with validator and that is going to be coming from the validator. 54 00:03:39,540 --> 00:03:43,710 Then let's keep on scrolling and we're looking for validator. 55 00:03:43,860 --> 00:03:46,090 And then is email. 56 00:03:46,470 --> 00:03:47,970 That's the function. 57 00:03:48,090 --> 00:03:49,980 Again, we pass in the reference. 58 00:03:50,190 --> 00:03:51,960 We don't invoke the functionality here. 59 00:03:52,200 --> 00:03:59,610 The function will be invoked and will automatically get access to whatever is passed in the email when 60 00:03:59,610 --> 00:04:01,920 we're trying to set up the user. 61 00:04:02,520 --> 00:04:10,920 And now that we are finally done with our initial setup for the user model, we can start setting up 62 00:04:10,920 --> 00:04:15,060 our controller and actually start creating the users.