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Library/Backend/NestJS
Advanced Pro#nestjs

Cách validate nested DTOs, arrays và conditional validation trong NestJS?

February 15, 2026

Quick summary

To validate nested DTOs and arrays in NestJS, you must combine `@ValidateNested()` with `@Type()` to transform plain objects into class instances at runtime. For conditional validation, use `@ValidateIf()` to dynamically define validation logic based on the payload's state.

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Sample answer:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.

Quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore.

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