I got tired of describing the same request 3 times in Symfony

Source: Dev.to

The Problem

When building Symfony APIs, I kept duplicating the same request contract:

• Validation rules in a DTO
• OpenAPI schema (often separately)
• Mapping / glue code around it

After enough endpoints, the API layer started feeling heavier than the business logic.

A Tiny Example

// (original example code was omitted)

• Documentation site:

Discussion

What part do you duplicate the most in Symfony APIs: validation, OpenAPI, or mapping?