Validating nested objects with class-validator in NestJS

• class-validator

  29 10,469 9.3 TypeScript

  Decorator-based property validation for classes.

  

Today I have for you a rapid and short article. Maybe it will help someone. I'm using class-validator for request validation in NestJS really often. A few days ago I needed to validate a nested object. Quick look to the class-validator validation:

• class-transformer

  24 6,508 6.9 TypeScript

  Decorator-based transformation, serialization, and deserialization between objects and classes.

  

But for some reason It doesn't work in NestJS! Here is an easy solution. Install class-transformer package, if you haven't done it yet. Then import @Type() decorator, and declare the type of validating object with it. Check this out:

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