question: accept only objects of a given validate-required form within an array

I was trying to… Allow only an array of objects to be passed on a given property

The problem: ValidateNested allows both objects and arrays, making it possible to pass any amounts of nested arrays as long as in any moment where there’s any other type defined within the matrixes it is according to the other constrains.

@ArrayMinSize(0)
@ArrayMaxSize(5)
@ValidateNested({ each: true })
@Type(() => OfferPricingDTO)
pricing: OfferPricingDTO[];
// allows [[[]]], where my interest is to only allow objects with the passed type as direct items of this property.

[braaar]

I still think there is a legitimate issue here. It doesn’t seem intuitive or practical that ValidateNested accepts empty arrays.

[braaar]

I think the issue is twofold:

1. It’s not nice that empty arrays are accepted by ValidateNested. There should at least be an option to disable that behaviour or something.
2. It would be nice to have a simple way to tell class-validator to validate an object property of a specific class, similar to @IsEnum(entity: object). For example, it could look like this: @ValidateNested(OfferPricingDTO, {each: true})