1 00:00:00,210 --> 00:00:00,560 All right. 2 00:00:00,650 --> 00:00:04,320 And the first error that I want to work on is the missing field. 3 00:00:04,710 --> 00:00:10,470 So when we're setting up the schema, we set up three properties to be required. 4 00:00:11,190 --> 00:00:18,540 So if one or multiple are missing, we are going to be getting back the hours and we'll have access 5 00:00:18,540 --> 00:00:20,670 to those errors in the error handler. 6 00:00:21,180 --> 00:00:27,720 So now what I want to do is set up the condition where I check for that error and the error is going 7 00:00:27,720 --> 00:00:28,660 to look something like this. 8 00:00:28,680 --> 00:00:35,460 So if I'm going to go to a postman and if I'm going to remove the name, you'll notice that response 9 00:00:35,460 --> 00:00:36,690 comes back, something like this. 10 00:00:36,930 --> 00:00:40,170 So the message is going to be equal to a our object. 11 00:00:40,500 --> 00:00:45,750 And there we have the errors property, which is an object itself. 12 00:00:46,200 --> 00:00:53,700 And in there, every field that is going to be missing is going to be added as a property also in that 13 00:00:53,700 --> 00:00:54,630 error object. 14 00:00:54,810 --> 00:00:57,110 So the main one, not in the errors. 15 00:00:57,210 --> 00:00:58,290 That's a separate property. 16 00:00:58,560 --> 00:01:06,390 But on the main, our object, we also have these properties where we have the message name and also 17 00:01:06,420 --> 00:01:07,490 one more message. 18 00:01:07,500 --> 00:01:15,450 So this one is with an underscore where the fields are displayed, the ones that are missing, and if 19 00:01:15,690 --> 00:01:18,750 there's only one field, then we'll get this response. 20 00:01:18,750 --> 00:01:24,960 But if there's, for example, two fields missing, you'll notice that there are more properties in 21 00:01:24,960 --> 00:01:26,250 the error object. 22 00:01:26,280 --> 00:01:32,550 Again, there is one big error object and then inside of it first we have errors property. 23 00:01:33,530 --> 00:01:39,920 So these are all the fields that are missing at the moment is just one, but if I remove the emailing 24 00:01:39,920 --> 00:01:46,640 us, I don't need to set up proper syntax now in order not only I have the name, I also have the email 25 00:01:47,300 --> 00:01:52,250 in the Irish property and then on the object, the error object. 26 00:01:52,520 --> 00:01:56,300 There's also properties here for the name and message. 27 00:01:56,720 --> 00:01:57,930 And here's what I want to do. 28 00:01:58,460 --> 00:02:05,750 I want to first check the name property, and if it's going to be equal to validation error, then we 29 00:02:05,750 --> 00:02:11,420 know that we'll have to change some things around because the moment I'm sending back five hundred and 30 00:02:11,420 --> 00:02:12,380 that's not what I want. 31 00:02:13,040 --> 00:02:16,610 Actually, I want to send back 400 because it is a bad request. 32 00:02:17,030 --> 00:02:17,750 That's number one. 33 00:02:18,200 --> 00:02:21,800 Number two, I mean, we're sending back this giant object. 34 00:02:22,190 --> 00:02:23,870 How useful that is to the frontend? 35 00:02:24,140 --> 00:02:24,890 Well, not really. 36 00:02:25,190 --> 00:02:31,820 We kind of want to shorten this up a bit and send just, hey, listen, the field is missing or stuff 37 00:02:31,820 --> 00:02:32,570 along those lines. 38 00:02:33,020 --> 00:02:34,370 And the way we can do that first. 39 00:02:35,330 --> 00:02:37,670 I can just pass on the message if I want. 40 00:02:37,700 --> 00:02:38,720 That's definitely an option. 41 00:02:39,110 --> 00:02:47,270 But in our case, I'll also show you how we can iterate over these properties in the areas, object 42 00:02:47,750 --> 00:02:52,790 the property on the error object, and then we'll just grab the message over here. 43 00:02:53,270 --> 00:02:56,280 Senator, we have email and then we have the message. 44 00:02:56,300 --> 00:02:59,900 And the same goes for the name one again. 45 00:03:00,440 --> 00:03:01,010 Two options. 46 00:03:01,010 --> 00:03:07,430 This probably is a faster, but I think that one is a bit more concise. 47 00:03:07,580 --> 00:03:08,510 The second option? 48 00:03:08,810 --> 00:03:10,080 So let's start working on that. 49 00:03:10,100 --> 00:03:14,270 I'm going to navigate back to our project and where I have the air handler. 50 00:03:14,450 --> 00:03:22,430 First thing that I want to check is if in the air object, the name property is equal to validation 51 00:03:22,430 --> 00:03:22,630 error. 52 00:03:22,970 --> 00:03:23,900 How's that going to look like? 53 00:03:23,930 --> 00:03:25,670 Well, I can go with if error. 54 00:03:25,820 --> 00:03:29,870 So that's the main object, not the error property inside of it. 55 00:03:30,470 --> 00:03:31,640 A big distinction. 56 00:03:32,120 --> 00:03:37,070 And I'm going to say, if the error name is equal to and Huron, you can type it out. 57 00:03:37,070 --> 00:03:41,570 But in my case, just so I can avoid some silly bugs, I'm going to copy and paste. 58 00:03:41,990 --> 00:03:44,210 I'm going to set it up as validation error. 59 00:03:44,480 --> 00:03:48,860 And if this is the case, first thing that I one there is change the status code because like I said, 60 00:03:49,340 --> 00:03:50,570 it's not five hundred anymore. 61 00:03:50,750 --> 00:03:51,590 It is 400. 62 00:03:51,680 --> 00:03:53,240 It is a better request. 63 00:03:53,480 --> 00:03:57,380 How do we do that while we go with default error vanish status code? 64 00:03:57,380 --> 00:03:58,700 And that is equal to. 65 00:03:59,070 --> 00:04:03,500 And let's use our status code and then we're looking for bar request. 66 00:04:04,310 --> 00:04:05,150 So that's number one. 67 00:04:05,540 --> 00:04:12,170 Number two, what I can also do is change this message where I'm going to say, if this is the case, 68 00:04:12,440 --> 00:04:18,350 then the default error message property is going to be equal to my error. 69 00:04:18,740 --> 00:04:21,380 And then remember this property over here. 70 00:04:21,620 --> 00:04:27,950 We also have the message correct so we can just go here with error and message like show. 71 00:04:28,440 --> 00:04:31,430 And now, of course, you probably want to see the response. 72 00:04:31,880 --> 00:04:37,430 So it just changes around where I'm going to leave this one just in case I ever want to use it. 73 00:04:37,640 --> 00:04:42,290 I want to send back and then I'll copy and paste and uncommon this one. 74 00:04:42,620 --> 00:04:50,000 And instead of the error that we're sending back, what I want to do right now is send back the default 75 00:04:50,000 --> 00:04:53,510 error and then the message, not service one. 76 00:04:53,780 --> 00:05:00,110 And what you'll notice right now in the post, man, once we send it, we should get back four hundred. 77 00:05:00,350 --> 00:05:01,070 That's number one. 78 00:05:01,430 --> 00:05:02,800 And then we get this message. 79 00:05:02,810 --> 00:05:05,120 Here's a validation failed email. 80 00:05:05,370 --> 00:05:07,970 And I'm definitely you can keep it like this. 81 00:05:08,780 --> 00:05:11,810 But in my case, what I'm going to do, I'm going to comment this one out. 82 00:05:12,020 --> 00:05:15,980 Just search state for your friends and instead what we're going to do. 83 00:05:16,310 --> 00:05:22,580 We're going to look in that error object and in their outlook for the property values. 84 00:05:23,240 --> 00:05:29,960 So remember, that was a giant object where we had all the fields that are missing the name, the email 85 00:05:30,290 --> 00:05:31,370 and password. 86 00:05:31,850 --> 00:05:38,490 I will set them up as all right, I'll iterate over them and then I'll join the messages together. 87 00:05:38,810 --> 00:05:44,960 Now, since probably this is a little bit confusing, I'll come on this one out and let's send it one 88 00:05:44,960 --> 00:05:45,410 more time. 89 00:05:45,800 --> 00:05:46,760 So let's send it. 90 00:05:47,270 --> 00:05:49,010 And you'll notice this error, right? 91 00:05:49,370 --> 00:05:57,260 So in JavaScript, we have object values, which essentially is going to set up all these properties 92 00:05:57,710 --> 00:05:58,820 as an array. 93 00:05:59,630 --> 00:06:00,980 So whatever you have over here. 94 00:06:01,310 --> 00:06:07,970 So in my case, I have the email and I have the name, and then I'll iterate over that array and I'm 95 00:06:07,970 --> 00:06:14,390 just going to look for these messages just so have a little bit shorter error response. 96 00:06:14,660 --> 00:06:18,770 Just in case you need to jog your memory on object values method. 97 00:06:19,250 --> 00:06:22,010 The Amdocs is a very good place to start. 98 00:06:22,250 --> 00:06:28,610 So let's navigate back over here, and I'll just simply say a default error message is going to be equal 99 00:06:28,610 --> 00:06:31,100 to object values. 100 00:06:31,430 --> 00:06:37,000 And this is going to set up all the property values as an array and what properties I'm looking for 101 00:06:37,010 --> 00:06:38,360 while I'm looking for error. 102 00:06:38,660 --> 00:06:39,530 That's the main one. 103 00:06:39,770 --> 00:06:42,200 And then more specifically, errors object. 104 00:06:42,530 --> 00:06:47,570 And then once I have that, I can just change that map and then I'll call this an item. 105 00:06:47,810 --> 00:06:54,980 So now I'm talking about each and every property over here, and I want to access this message. 106 00:06:55,160 --> 00:06:56,600 So let's navigate back here. 107 00:06:57,670 --> 00:07:03,430 And let's say that as I'm iterating, I want to return the message and I want to join them together 108 00:07:03,670 --> 00:07:07,090 as one string, so chain not join. 109 00:07:07,300 --> 00:07:09,880 And I'll just add a comma in between. 110 00:07:10,270 --> 00:07:18,280 And once I have this code in place now again, I will uncommon this one and comment out into a response. 111 00:07:18,580 --> 00:07:24,880 So if we go back to the postman and if we're sending notice, not only I have four hundred, but I also 112 00:07:24,880 --> 00:07:26,110 have please provide email. 113 00:07:26,290 --> 00:07:27,220 Please provide a name. 114 00:07:27,520 --> 00:07:31,140 So if I'm going to set up my name back up. 115 00:07:31,720 --> 00:07:34,240 And in this case, I'm going to go back with John. 116 00:07:34,480 --> 00:07:36,220 You'll notice that now I only have. 117 00:07:36,610 --> 00:07:41,560 Please provide email again if you're somewhat iffy on this code. 118 00:07:41,860 --> 00:07:46,210 You can always use this error and message. 119 00:07:46,480 --> 00:07:53,230 And lastly, let me just point out something where remember when we were setting up the user, we were 120 00:07:53,230 --> 00:07:55,540 also checking for the valid email. 121 00:07:55,810 --> 00:08:01,120 So just to reiterate in the user schema, we check for empty values. 122 00:08:01,540 --> 00:08:09,850 We check for unique email, which we are going to cover in the next video and also we check for valid 123 00:08:09,850 --> 00:08:10,300 email. 124 00:08:10,630 --> 00:08:15,850 And what's really nifty that it actually gets handled with our validation error as well. 125 00:08:16,180 --> 00:08:23,920 And if you want to start out, go to your postman and try to set up the user with some kind of invalid 126 00:08:23,920 --> 00:08:24,310 email. 127 00:08:24,700 --> 00:08:28,270 So in this case, I'm going with email and then one at one. 128 00:08:28,630 --> 00:08:33,820 And what you'll notice when you send back is the message, as well as the status code. 129 00:08:34,120 --> 00:08:39,580 And in the message, it clearly says please provide valid email, which is again, super, super cool 130 00:08:39,850 --> 00:08:42,850 because we don't have to handle that separately. 131 00:08:43,000 --> 00:08:49,030 So not only we're handling missing fields, we're also handling a valid email.