Documenting a Generic Update DTO

This document describes the purpose and structure of a generic Update DTO (Data Transfer Object) used within a NestJS application.

Purpose:

• Defines the expected data structure for updating an existing resource within the application.
• Allows partial updates by making properties optional and using validation decorators.
• Enforces data validation and sanitization before submitting data to the service layer.
• Promotes consistent data handling and API interaction.

Key Elements:

• Import:
  • ApiProperty from @nestjs/swagger for generating API documentation (optional).
• Validation:
  • Is<X> decorators from class-validator for enforcing data type and presence validation (customizable).
• Properties:
  • Each property represents a field that can be optionally updated for the resource.
  • Property names and types should align with the underlying resource entity attributes.
  • ApiProperty decorator (optional) provides descriptions for API documentation.
  • Properties are marked as @IsOptional() to allow partial updates.

Benefits:

• Improves data integrity and security by validating incoming data.
• Simplifies service implementation by ensuring data is received in the expected format.
• Enhances API clarity and documentation with property descriptions.
• Allows flexible updates by making properties optional.

Additional Notes:

• The specific properties, validation rules, and API descriptions will vary depending on the actual resource type and application requirements.
• Consider using more specific validation decorators like IsEmail, IsNumber, or custom validation functions as needed.
• This is a generic overview, and you might need to adjust it to reflect the specific details of your DTO.

File Name: update-<Resource>.dto.ts