1 00:00:00,840 --> 00:00:06,000 So we're almost done our server side form validation, and here's where we are right now, we can try 2 00:00:06,000 --> 00:00:10,080 to submit this form and these three are currently required. 3 00:00:10,110 --> 00:00:10,830 This one is not. 4 00:00:11,520 --> 00:00:12,990 And this actually works. 5 00:00:13,000 --> 00:00:17,730 I can actually try this make reservation and it will say no, got to be at least three characters so 6 00:00:17,730 --> 00:00:18,690 I could make that three. 7 00:00:19,170 --> 00:00:25,050 And but the problem is here under email, I can put just a letter and that accepts it. 8 00:00:25,050 --> 00:00:25,680 It's fine. 9 00:00:25,680 --> 00:00:28,230 And we want that to verify that it's actually an email. 10 00:00:28,920 --> 00:00:30,060 So we can do that. 11 00:00:30,690 --> 00:00:33,840 You can do it manually and it's rather lengthy and difficult. 12 00:00:34,410 --> 00:00:36,090 But there's a simple way to do this. 13 00:00:36,090 --> 00:00:39,660 And this is a package I mentioned a little while ago called Go Validator. 14 00:00:40,080 --> 00:00:41,610 It's a very good package. 15 00:00:41,610 --> 00:00:43,260 It's been around for a long time. 16 00:00:43,260 --> 00:00:48,240 It's been well tested and I've been using it for, well, pretty much shortly after it came out. 17 00:00:48,870 --> 00:00:49,820 So let's install that. 18 00:00:49,830 --> 00:00:51,300 So the URL is right here. 19 00:00:51,720 --> 00:00:57,570 Go to GitHub Dotcom as a K in the Chicago validator. 20 00:00:58,380 --> 00:01:03,120 So go there and you go down to the install part and we're going to use this version. 21 00:01:03,120 --> 00:01:07,620 We're not going to use this version because it's not really set up for packages correctly and it doesn't 22 00:01:07,620 --> 00:01:09,000 matter for our purposes right now. 23 00:01:09,300 --> 00:01:16,100 We'll just copy this, go back to our project, make sure a terminal window is open and paste that in, 24 00:01:16,140 --> 00:01:17,550 make sure you're in the correct directory. 25 00:01:17,550 --> 00:01:20,440 So I am right now on a Mac, at least I can type. 26 00:01:20,490 --> 00:01:24,900 Would you make sure you're in the correct directory on Windows? 27 00:01:24,900 --> 00:01:29,670 And you will notice that I moved my project out of visual studio code into goaland projects. 28 00:01:29,910 --> 00:01:32,400 Just cleaner for me because that's where I put most of my go code. 29 00:01:33,000 --> 00:01:36,090 So I'm going to paste in this, go get command. 30 00:01:36,570 --> 00:01:37,620 It will go and get it. 31 00:01:37,620 --> 00:01:38,220 And there it is. 32 00:01:38,700 --> 00:01:39,890 Now we want to use it. 33 00:01:40,530 --> 00:01:44,820 So what we need to do, first of all, is to set up a validator. 34 00:01:45,150 --> 00:01:48,480 We want to set up a Veldheer that checks that something is an email. 35 00:01:48,870 --> 00:01:50,820 So I will hide my terminal window. 36 00:01:50,940 --> 00:01:58,320 I'm going to go to my forms page or forms go code and write at the very bottom. 37 00:01:58,320 --> 00:02:02,360 I'll put in a new [REMOVED] func and again, it's for effort. 38 00:02:02,370 --> 00:02:03,870 It takes the receiver for form. 39 00:02:03,870 --> 00:02:05,370 So I'll use that and I'll just call. 40 00:02:05,370 --> 00:02:06,540 This is email. 41 00:02:06,750 --> 00:02:07,770 That's all I have to do. 42 00:02:08,460 --> 00:02:13,230 And what I'm going to be checking again, as usual, is a field which will be passed as a string and 43 00:02:13,230 --> 00:02:14,460 that's all I need to pass it. 44 00:02:15,120 --> 00:02:21,480 And all I'm going to do is called go validator and go validator is really, really good at validation. 45 00:02:21,960 --> 00:02:28,230 So if I don't want to check to make sure that this is an email, so I'll check to see if I get a response 46 00:02:28,230 --> 00:02:35,340 of Fault's from calling go validator and it actually puts it in there for me in my autocomplete. 47 00:02:35,340 --> 00:02:40,520 But I don't want abs and I just want to check his email and pass it. 48 00:02:40,540 --> 00:02:47,250 Feel sorry, not pass at the field, pass it the form object, the pointer that we have, the form object, 49 00:02:47,640 --> 00:02:55,440 get the function on that and, and the field is field so that will get whatever the user typed into 50 00:02:55,860 --> 00:02:57,780 whatever field name we've passed here. 51 00:02:57,780 --> 00:03:04,800 We call dars email in our forms that will go to the form post, look for the entry labeled email and 52 00:03:04,800 --> 00:03:05,340 get the value. 53 00:03:06,060 --> 00:03:12,550 And if, if that of course fails that check, what do I do? 54 00:03:12,580 --> 00:03:13,860 Same thing I've been doing right along. 55 00:03:13,860 --> 00:03:21,990 F dot errors dot add and add an error for this field and the error is invalid. 56 00:03:22,170 --> 00:03:23,820 Email address. 57 00:03:24,930 --> 00:03:26,460 All right, now let's give this a comment. 58 00:03:26,910 --> 00:03:33,240 Keep things nice and neat checks for valid email address. 59 00:03:33,390 --> 00:03:33,780 All right. 60 00:03:33,810 --> 00:03:41,490 So I've added that as a new validator so I can go back to my handlers over here, find the post for 61 00:03:41,730 --> 00:03:46,380 reservation right here and add another check form. 62 00:03:46,380 --> 00:03:53,850 DOT is email and I'm checking the of the form field email, and that's all I have to do. 63 00:03:54,240 --> 00:04:00,450 So let's run our application, go run command web, start up, go. 64 00:04:01,770 --> 00:04:08,250 Let's go back to our page on our site and reload it to make sure that we actually can do this properly. 65 00:04:08,700 --> 00:04:10,920 Let's make sure all the other validations work. 66 00:04:11,220 --> 00:04:14,400 They do that one works. 67 00:04:14,400 --> 00:04:18,750 Now let's put an AI in here, which is not a valid email address, invalid email address. 68 00:04:19,020 --> 00:04:25,470 Let's put a at a invalid email address and now let's make a valid email address. 69 00:04:26,820 --> 00:04:28,230 That one is valid there. 70 00:04:28,320 --> 00:04:32,010 There's our VM email validation and that's all we really need to do for this. 71 00:04:33,030 --> 00:04:34,620 So that was pretty straightforward. 72 00:04:34,620 --> 00:04:35,610 In the next lecture. 73 00:04:35,610 --> 00:04:38,520 What I want to do is when this form is filled out properly. 74 00:04:38,520 --> 00:04:42,030 So I have enough valid information in here to get past the check. 75 00:04:42,080 --> 00:04:44,010 I don't need phone right now. 76 00:04:44,490 --> 00:04:45,750 It displays a blank screen. 77 00:04:45,840 --> 00:04:51,990 I want I want to do in the next lecture is actually display the results of our reservation. 78 00:04:51,990 --> 00:04:56,220 And as you probably guessed, we really don't have enough information on our form right now to make 79 00:04:56,220 --> 00:04:57,180 a true reservation. 80 00:04:57,720 --> 00:04:58,650 We have the first name. 81 00:04:58,650 --> 00:04:59,730 We have the last name we have. 82 00:04:59,760 --> 00:05:03,450 The email we had, the phone, we don't know what room they're making a reservation for and there's 83 00:05:03,450 --> 00:05:07,180 other information we want as well, but we'll add that as time goes on. 84 00:05:07,410 --> 00:05:12,060 Right now, we're just getting our validation working and we can create all the validators we think 85 00:05:12,060 --> 00:05:12,420 we need. 86 00:05:13,050 --> 00:05:15,380 So in the next election, we'll make sure that we do fill this out. 87 00:05:15,390 --> 00:05:17,160 You don't get a blank screen.