Class Validators are not working when the type is a Record - NestJS

Question

We have a DTO property where its type is Record and Animal is another DTO with class validators like @IsDefined(), @IsNotEmpty(). However these validations are not working as expected and it's probably because it has the Record type.

I already tried adding @ValidatedNested({ each: true }) but still didn't work. How could we make the validation work for the Animal dto in Record?

user_15974895 · Answer

Hi You can try building partial class validator, https://trilon.io/blog/introducing-mapped-types-for-nestjs here is some documentation. for e.g:

export class Record extends PartialType(
  OmitType(Animal , ['legs'] as const),
) {}

Class Validators are not working when the type is a Record <k,v> - NestJS

1 Answers