validation
NestJS Validation
When to Use This Skill
Use this skill when:
- Validating request bodies (POST, PUT, PATCH)
- Validating query parameters and route parameters
- Transforming and sanitizing input data
- Stripping unwanted properties from requests
- Implementing custom validation logic
- Auto-converting primitive types
- Validating nested objects and arrays
What is Validation?
NestJS ValidationPipe uses the class-validator library to validate incoming data against DTO classes with declarative decorators. It provides automatic validation, transformation, and sanitization.
Installation
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