JSON Schema Validation

Appearance

Symfony JSON Schema ValidationPowerful request validation for modern Symfony applications

Type-safe JSON Schema validation with automatic OpenAPI documentation generation

How It Works
Get Started
View Examples
Symfony JSON Schema Validation
🛡️

Type-Safe Validation

Strong typing with ValidatedDtoInterface ensures your data is always valid and properly structured.

📋

JSON Schema Integration

Use industry-standard JSON Schema for request validation with automatic type conversion and error handling.

📖

OpenAPI Documentation

Automatic OpenAPI/Swagger documentation generation from your JSON schemas with interactive examples.

🎯

Modern Symfony

Built for Symfony 8.0+ and PHP 8.4+ with full support for attributes and modern PHP features.

⚡

High Performance

Optimized validation with OPIS JSON Schema library and intelligent caching mechanisms.

🧩

Extensible

Custom DTO injection, flexible error handling, and seamless integration with existing Symfony workflows.

Quick Start ​

Install the bundle via Composer:

bash
composer require outcomer/symfony-json-schema-validation

Create a JSON schema:

json
{
  "type": "object",
  "properties": {
    "body": {
      "type": "object",
      "properties": {
        "name": { "type": "string", "minLength": 3 },
        "email": { "type": "string", "format": "email" }
      },
      "required": ["name", "email"]
    }
  }
}

Use it in your controller:

php
#[Route('/api/users', methods: ['POST'])]
public function createUser(#[MapRequest('user-create.json')] ValidatedRequest $request): JsonResponse
{
    $data = $request->getPayload()->getBody();
    // $data is guaranteed to be valid!
    
    return $this->json(['message' => 'User created']);
}

What's Next? ​

Released under the MIT License. Built with Opis JSON Schema.

Copyright © 2026 Outcomer