1
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All right, so how we could set up the logic in our controller where instead of the generic 501?

2
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We're going to be getting 400.

3
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Well, let's think about it.

4
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We're getting this error class or constructor from where we're getting it from JavaScript.

5
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Correct.

6
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So already provided for us and we know that in JavaScript, we could extend from a certain class.

7
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We're essentially.

8
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I can just add some extra logic and then use that instance instead.

9
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So let's try it out and they quicksand out.

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If you need a refresher on Joske of class syntax as well as how to implement subclass thing with extends,

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as always, Amdocs is a great place to start.

12
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And we're going to do that here, right in our controller.

13
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And then once we have all the logic in place, then we'll separate the concerns.

14
00:00:57,600 --> 00:00:58,980
So for now, let's do this way.

15
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Let's create a class, and I'm going to call this one custom API error.

16
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Now, name is really up to you.

17
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When I said, we're going to go with extends and our mike show.

18
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So once we extend, then we want to go with constructor and nanoporous here.

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The message and not in the curlies will go with super value message.

20
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And I want to add that status code.

21
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I simply want to add the property on my instance.

22
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Now, what property do I want to add?

23
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Well, this one.

24
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Because at the moment, this one is still the generic 501.

25
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And the way we do that, we go with this, that status and code, and that is equal to my status codes,

26
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correct?

27
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Again, you cannot call this as 400 markers, so I'm going to go status codes and bad request.

28
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So that's the 401.

29
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And now, instead of going with error, I'm going to go with custom API error so I can still pass in

30
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the message just like in the normal error or in this case, there is this property status code on it

31
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and then we pass here ready for it.

32
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So now what do we need to do is to go back to the error handler and in the default error, do the same

33
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thing.

34
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Like with message where I'm going to say if the error object that is coming in has the status quo,

35
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probably use that one and again in here, remember that we're overriding that anyway.

36
00:02:33,900 --> 00:02:36,960
So let's just go here and let's just say error.

37
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That status code, if it is present, use that one.

38
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If not, use the jack one.

39
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And now let's try it out.

40
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And of course, my where I'm going to go back, I'm going to send it and check it out.

41
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Not only I have please provide all the values, I also have the 401.

42
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And just so you don't think that I'm messing with you, I'm going to add the name and let's remove the

43
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email and you'll see that the result is exactly the same.

44
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Apart from the fact that not particularly bright line, I have a syntax error.

45
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And there you go.

46
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Now I have please provide all values.

47
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Beautiful.

48
00:03:15,930 --> 00:03:25,560
So that means that my logic works where in here we are extending from the error class and we invoke

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the instance.

50
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So we invoke the custom API error.

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And there we are passing the message and the status code is already hardcoded here.

52
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So essentially it is set to 400.

53
00:03:39,750 --> 00:03:46,530
So every time I'll use the custom API or instance, what do you think is going to happen?

54
00:03:46,890 --> 00:03:53,550
Well, we'll get that 400 as a status code and then we can always provide whatever message we want,

55
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just like with normal error class.