Eloquent JSON Schema

Generate JSON Schema files from your Eloquent models for Laravel applications.

Features

Single Source of Truth: Infer schema from model casts, database columns, PHPDoc types, and PHP Attributes
Request & Response Schemas: Generate different schemas for API requests and responses
Composable Resolvers: Modular system for extracting schema information
PHP Attributes: Clean metadata injection with custom attributes
Validation Integration: Middleware for automatic request validation
OpenAPI Support: Export schemas for Swagger/Redoc documentation
Versioning: Track schema changes with version management
Artisan Commands: Easy generation, diffing, and publishing

Installation

composer require onamfc/eloquent-json-schema

Publish the configuration file:

php artisan vendor:publish --provider="onamfc\EloquentJsonSchema\LaravelSchemaServiceProvider"

Quick Start

1. Add Attributes to Your Models

use App\Schemas as S;

#[S\SchemaName('User')]
#[S\RequestOnly(['password'])]
class User extends Model {
    #[S\Title('User ID')]
    #[S\Format('uuid')]
    public $id;

    #[S\Description('Primary email')]
    #[S\Format('email')]
    public $email;

    #[S\Enum(['basic','pro','enterprise'])]
    public $plan;
}

2. Generate Schemas

# Generate all model schemas
php artisan schema:generate

# Generate specific model
php artisan schema:generate User

3. Use in Validation

Route::post('/users', [UserController::class, 'store'])
    ->middleware('schema:User.request');

Generated Output

Schemas are saved to storage/api-schemas/{version}/models/:

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schemas.example.com/v1/models/User.response.schema.json",
  "title": "User",
  "type": "object",
  "properties": {
    "id": { "type": "string", "format": "uuid", "readOnly": true },
    "email": { "type": "string", "format": "email" },
    "plan": { "type": "string", "enum": ["basic","pro","enterprise"] }
  },
  "required": ["id","email","plan"]
}

Available Attributes

#[SchemaName('CustomName')] - Override model name in schema
#[Title('Field Title')] - Add title to property
#[Description('Field description')] - Add description to property
#[Format('email|uuid|date-time')] - Set format constraint
#[Enum(['value1', 'value2'])] - Define enum values
#[RequestOnly(['field1'])] - Fields only in request schema
#[ResponseOnly(['field1'])] - Fields only in response schema

Commands

# Generate schemas
php artisan schema:generate

# Show differences between versions
php artisan schema:diff --from=v1 --to=v2

# Export OpenAPI components
php artisan schema:publish-openapi

Configuration

Key configuration options in config/laravel-schema.php:

version: Schema version identifier
output_directory: Where to save generated schemas
type_mapping: How to map database types to JSON Schema
relationship_depth: Whether to embed relationships or use ID references
decimal_as: Handle decimals as 'number' or 'string'

Validation Middleware

protected $middlewareAliases = [
    'schema' => \onamfc\EloquentJsonSchema\Http\Middleware\ValidateWithSchemaMiddleware::class,
];

Use in routes:

Route::post('/api/users', [UserController::class, 'store'])
    ->middleware('schema:User.request');

OpenAPI Integration

Export schemas as OpenAPI components:

php artisan schema:publish-openapi

Then reference in your OpenAPI spec:

paths:
  /users:
    post:
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UserRequest'
      responses:
        201:
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UserResponse'

License

MIT License

onamfc / eloquent-to-json-generator