Node Js: Validate empty array using class validator

Question

How to check whether the array is empty or not using class-validator.
Given below is my structure. I want to check if cartId is empty or not.

{
   "cartId": []
}

@IsNotEmpty() doesn't catch an empty array, because [] IS a non-empty value. As the selected answer show,s you must use @ArrayNotEmpty() — Michael Jay
– Michael Jay, Commented Jul 22, 2022 at 13:57

satanTime · Accepted Answer · 2020-04-17 16:53:06Z

32

What you want is @ArrayNotEmpty(). You can find all built-in validators here: https://github.com/typestack/class-validator#validation-decorators

answered Apr 17, 2020 at 16:53

satanTime

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1 Comment

Really close in name to @IsNotEmpty(). Could see that catching people

Tyler2P · Accepted Answer · 2023-09-07 10:00:44Z

1

To check if array is empty, you can use @ArrayNotEmpty(), like this:

@ArrayNotEmpty({ each: true })
cartId: [];

Tyler2P

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answered Sep 6, 2023 at 22:49

TiagoPaz

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