README

Generate OpenAPI 3.x documentation directly from Spatie Laravel Data DTOs. No intermediate annotation files, no UI bundling -- just your DTOs reflected into api-docs.json (and optionally YAML), merged with any hand-written controller annotations.

How It Works

php artisan openapi:generate
  |
  +-- Scan controller annotations (zircote/swagger-php)
  +-- Reflect on Spatie Data DTOs -> build OpenAPI Schema objects in memory
  +-- Merge DTO schemas into the OpenAPI model
  +-- Enrich endpoint parameters (optional)
  +-- Inject security definitions from config
  +-- Write api-docs.json / api-docs.yaml

DTO-generated schemas are additive: if a schema with the same name already exists from your annotations, the annotation version wins.

Requirements

PHP 8.1+
Laravel 10 / 11
spatie/laravel-data ^3.9 or ^4.0

Installation

composer require langsys/openapi-docs-generator

Publish the config file:

php artisan vendor:publish --provider="Langsys\OpenApiDocsGenerator\OpenApiDocsServiceProvider" --tag=config

This creates config/openapi-docs.php.

Quick Start

Point the config at your DTO directory and controller annotation directories:

// config/openapi-docs.php

'documentations' => [
    'default' => [
        'paths' => [
            'annotations' => [app_path()], // directories to scan for @OA annotations
        ],
    ],
],

'defaults' => [
    'dto' => [
        'path' => app_path('DataObjects'),
        'namespace' => 'App\\DataObjects',
    ],
],

Create a Spatie Data class:

namespace App\DataObjects;

use Spatie\LaravelData\Data;

class UserData extends Data
{
    public function __construct(
        public int $id,
        public string $name,
        public string $email,
        public ?string $phone,
        public bool $is_active = true,
    ) {}
}

Generate:

php artisan openapi:generate

Output: storage/api-docs/api-docs.json with a UserData schema containing all properties, types, defaults, and auto-generated example values.

Attributes

Control how properties appear in the generated schema using PHP attributes on your DTO properties.

`#[Example]`

Set an explicit example value for a property.

use Langsys\OpenApiDocsGenerator\Generators\Attributes\Example;

class UserData extends Data
{
    public function __construct(
        #[Example(42)]
        public int $id,

        #[Example('jane@example.com')]
        public string $email,

        #[Example(true)]
        public bool $is_admin,
    ) {}
}

Produces:

{
  "id": { "type": "integer", "example": 42 },
  "email": { "type": "string", "example": "jane@example.com" },
  "is_admin": { "type": "boolean", "example": true }
}

Faker function reference: prefix the example value with : to call a Faker method directly:

#[Example(':sentence')]
public string $title,

#[Example(':numberBetween', arguments: [1, 100])]
public int $score,

`#[Description]`

Add a description to a property.

use Langsys\OpenApiDocsGenerator\Generators\Attributes\Description;

class UserData extends Data
{
    public function __construct(
        #[Description('The unique user identifier')]
        public int $id,

        #[Description('ISO 8601 date when the account was created')]
        public string $created_at,
    ) {}
}

`#[Omit]`

Exclude a property from the generated schema entirely.

use Langsys\OpenApiDocsGenerator\Generators\Attributes\Omit;

class UserData extends Data
{
    public function __construct(
        public int $id,
        public string $name,

        #[Omit]
        public string $internal_token,  // will NOT appear in the schema
    ) {}
}

`#[GroupedCollection]`

Mark a property as a grouped/dictionary structure. The argument is the key used in the example.

Simple grouped array (plain array type):

use Langsys\OpenApiDocsGenerator\Generators\Attributes\GroupedCollection;

class TranslationData extends Data
{
    public function __construct(
        #[GroupedCollection('en')]
        #[Example('Hello')]
        public array $greetings,
    ) {}
}

Produces:

{
  "greetings": {
    "type": "object",
    "example": { "en": "Hello" }
  }
}

Grouped DataCollection (combined with #[DataCollectionOf]):

use Spatie\LaravelData\DataCollection;
use Spatie\LaravelData\Attributes\DataCollectionOf;

class CategoryData extends Data
{
    public function __construct(
        #[GroupedCollection('en')]
        #[DataCollectionOf(ItemData::class)]
        public DataCollection $items_by_locale,
    ) {}
}

Produces:

{
  "items_by_locale": {
    "type": "object",
    "additionalProperties": {
      "type": "array",
      "items": { "$ref": "#/components/schemas/ItemData" }
    }
  }
}

Supported Property Types

The generator handles these types automatically:

PHP Type	OpenAPI Output
`string`	`{ "type": "string" }`
`int`	`{ "type": "integer" }`
`float`	`{ "type": "number" }`
`bool`	`{ "type": "boolean" }`
`array`, `Collection`	`{ "type": "array", "items": { ... } }`
`SomeData` (nested Data class)	`{ "$ref": "#/components/schemas/SomeData" }`
`DataCollection` with `#[DataCollectionOf]`	`{ "type": "array", "items": { "$ref": "..." } }`
`BackedEnum`	`{ "type": "string", "enum": ["case1", "case2"] }`
Nullable (`?string`)	Tracked as not required
Default values	Included as `"default": value`

Enum Example

enum UserStatus: string
{
    case Active = 'active';
    case Inactive = 'inactive';
    case Suspended = 'suspended';
}

class UserData extends Data
{
    public function __construct(
        #[Example('active')]
        public UserStatus $status = UserStatus::Active,
    ) {}
}

Produces:

{
  "status": {
    "type": "string",
    "default": "active",
    "enum": ["active", "inactive", "suspended"],
    "example": "active"
  }
}

If #[Example] is missing or its value isn't a valid enum case, a random case is picked automatically.

Nested Data Classes

class AddressData extends Data
{
    public function __construct(
        public string $street,
        public string $city,
    ) {}
}

class UserData extends Data
{
    public function __construct(
        public string $name,
        public AddressData $address,
    ) {}
}

Both AddressData and UserData schemas are generated. The address property uses $ref:

{ "address": { "$ref": "#/components/schemas/AddressData" } }

Auto-Generated Response Schemas

Any DTO whose class name ends with Resource automatically gets three additional wrapper schemas:

Class	Generated Schemas
`ProjectResource`	`Project`, `ProjectResponse`, `ProjectPaginatedResponse`, `ProjectListResponse`

ProjectResponse: { status: bool, data: Project }

ProjectListResponse: { status: bool, data: [Project] }

ProjectPaginatedResponse: { status, page, records_per_page, page_count, total_records, data: [Project] }

The pagination wrapper fields are configured via dto.pagination_fields:

'pagination_fields' => [
    ['name' => 'status', 'description' => 'Response status', 'content' => true, 'type' => 'bool'],
    ['name' => 'page', 'description' => 'Current page number', 'content' => 1, 'type' => 'int'],
    ['name' => 'records_per_page', 'description' => 'Records per page', 'content' => 8, 'type' => 'int'],
    ['name' => 'page_count', 'description' => 'Number of pages', 'content' => 5, 'type' => 'int'],
    ['name' => 'total_records', 'description' => 'Total items', 'content' => 40, 'type' => 'int'],
],

Example Generation (Faker)

When a property doesn't have an explicit #[Example] attribute, the generator produces example values automatically using Faker. It uses three resolution strategies in order:

1. Faker Attribute Mapper

Maps property name patterns to Faker methods. If a property name contains the pattern, the corresponding Faker method is called.

// config/openapi-docs.php
'faker_attribute_mapper' => [
    'address_1' => 'streetAddress',   // $user->address_1 -> Faker::streetAddress()
    'address_2' => 'buildingNumber',  // $user->address_2 -> Faker::buildingNumber()
    'zip'       => 'postcode',        // $user->zip_code  -> Faker::postcode()
    '_at'       => 'date',            // $user->created_at -> Faker::date()
    '_url'      => 'url',             // $user->avatar_url -> Faker::url()
    'locale'    => 'locale',          // $user->locale     -> Faker::locale()
    'phone'     => 'phoneNumber',     // $user->phone      -> Faker::phoneNumber()
    '_id'       => 'id',              // $user->user_id    -> custom 'id' function
],

The matching is substring-based: a property named created_at matches _at and uses Faker::date().

2. Custom Functions

For cases where Faker doesn't have what you need, register custom functions:

// config/openapi-docs.php
'custom_functions' => [
    'id' => [\Langsys\OpenApiDocsGenerator\Functions\CustomFunctions::class, 'id'],
    'date' => [\Langsys\OpenApiDocsGenerator\Functions\CustomFunctions::class, 'date'],
],

The built-in CustomFunctions class provides:

id: returns a UUID for string types, a random integer for int types
date: returns a Y-m-d H:i:s formatted date string (or timestamp for int types)

To add your own, create a class and register it:

namespace App\OpenApi;

class MyCustomFunctions
{
    public function currency(string $type): string
    {
        return collect(['USD', 'EUR', 'GBP'])->random();
    }

    public function percentage(string $type): int|string
    {
        return $type === 'int' ? random_int(0, 100) : random_int(0, 100) . '%';
    }
}

'custom_functions' => [
    'currency' => [App\OpenApi\MyCustomFunctions::class, 'currency'],
    'percentage' => [App\OpenApi\MyCustomFunctions::class, 'percentage'],
],

Custom functions receive the property type as their first argument.

3. Direct Faker Fallback

If no mapper pattern matches and no custom function exists, the property name itself is tried as a Faker method (converted to camelCase). So a property named first_name automatically calls Faker::firstName(). If that fails, it falls back to 0 for integers or an empty string for everything else.

Invoking Faker Directly from `#[Example]`

You can reference any Faker method from the #[Example] attribute by prefixing with ::

#[Example(':sentence')]
public string $title,

#[Example(':numberBetween', arguments: [1, 1000])]
public int $score,

#[Example(':email')]
public string $contact_email,

Artisan Commands

`openapi:generate`

# Generate docs for the default documentation set
php artisan openapi:generate

# Generate docs for a specific documentation set
php artisan openapi:generate v2

# Generate docs for all documentation sets
php artisan openapi:generate --all

`openapi:dto`

Scaffold a Spatie Data class from an Eloquent model. Reads the database schema and generates typed properties.

php artisan openapi:dto --model=App\\Models\\User

Generates app/DataObjects/UserData.php:

namespace App\DataObjects;

use Spatie\LaravelData\Data;

final class UserData extends Data
{
    public function __construct(
        public string $id,
        public string $name,
        public string $email,
        public ?string $email_verified_at,
        public string $password,
        public ?string $remember_token,
        public ?string $created_at,
        public ?string $updated_at,
    ) {}
}

On PHP 8.2+, properties are generated as readonly.

Configuration Reference

Multiple Documentation Sets

Useful for API versioning or separating public/internal APIs. Each documentation set can override any value from defaults.

'documentations' => [
    'v1' => [
        'paths' => [
            'docs_json' => 'v1-api-docs.json',
            'annotations' => [app_path('Http/Controllers/V1')],
        ],
        'dto' => [
            'path' => app_path('DataObjects/V1'),
            'namespace' => 'App\\DataObjects\\V1',
        ],
    ],
    'v2' => [
        'paths' => [
            'docs_json' => 'v2-api-docs.json',
            'annotations' => [app_path('Http/Controllers/V2')],
        ],
        'dto' => [
            'path' => app_path('DataObjects/V2'),
            'namespace' => 'App\\DataObjects\\V2',
        ],
    ],
],

Security Definitions

Inject security schemes and global security requirements from config. These are additive to any @OA\SecurityScheme annotations.

'security_definitions' => [
    'security_schemes' => [
        'sanctum' => [
            'type' => 'apiKey',
            'description' => 'Enter token in format: Bearer <token>',
            'name' => 'Authorization',
            'in' => 'header',
        ],
    ],
    'security' => [
        ['sanctum' => []],
    ],
],

Annotation-defined security schemes with the same name take precedence over config-defined ones.

YAML Output

'generate_yaml_copy' => true,

Or via environment variable:

OPENAPI_GENERATE_YAML=true

Server / Base Path

'paths' => [
    'base' => env('OPENAPI_BASE_PATH', 'https://api.example.com/v1'),
],

OpenAPI Spec Version

'scan_options' => [
    'open_api_spec_version' => '3.1.0',  // default: '3.0.0'
],

Constants

Define PHP constants available inside @OA\* annotations:

'constants' => [
    'API_HOST' => env('API_HOST', 'http://localhost'),
],

Use in annotations: @OA\Server(url=API_HOST).

Scan Options

'scan_options' => [
    'exclude' => ['tests', 'vendor'],       // directories to exclude
    'pattern' => '*.php',                    // file pattern
    'processors' => [                        // custom processors (injected after BuildPaths)
        App\Swagger\CustomProcessor::class,
    ],
    'analyser' => null,                      // custom analyser instance
],

Endpoint Parameter Enrichment

An optional feature that replaces generic order_by / filter_by query parameter $refs with endpoint-specific inline parameters containing the actual allowed fields and defaults.

Setup

Create the required database tables (api_resources, resource_orderable_fields, resource_default_order_entries, resource_filterable_fields, resource_default_filters).
Enable in config:

'endpoint_parameters' => [
    'enabled' => true,
    'resolver' => \Langsys\OpenApiDocsGenerator\Resolvers\DatabaseEndpointParameterResolver::class,
    'parameters' => ['order_by', 'filter_by'],
    'include_extensions' => true,
    'global_orderable_fields' => ['created_at', 'updated_at'],
],

How It Works

For each operation in the generated OpenAPI spec:

Infers the resource name from the 200 response $ref (e.g. ProjectPaginatedResponse -> ProjectResource)
Queries the resolver for that endpoint's orderable/filterable fields
Replaces generic $ref parameters with inline parameters containing field lists and defaults

Custom Resolver

Implement the EndpointParameterResolver interface to use a different data source:

use Langsys\OpenApiDocsGenerator\Contracts\EndpointParameterResolver;
use Langsys\OpenApiDocsGenerator\Data\EndpointParameterData;

class MyResolver implements EndpointParameterResolver
{
    public function resolve(string $endpointPath, string $resourceName): ?EndpointParameterData
    {
        return new EndpointParameterData(
            orderableFields: ['title', 'created_at'],
            defaultOrder: [['created_at', 'desc']],
            filterableFields: ['status', 'type'],
            defaultFilters: [['status', 'active']],
        );
    }
}

Viewing Your Docs

This package generates files only. To view them, use any OpenAPI-compatible viewer:

Swagger UI (standalone or Docker)
Scalar
Redocly
Stoplight Elements
Import api-docs.json into Postman

Programmatic Usage

Use the facade to generate docs from code:

use Langsys\OpenApiDocsGenerator\OpenApiDocsFacade as OpenApiDocs;

OpenApiDocs::generateDocs();

Or resolve from the container:

use Langsys\OpenApiDocsGenerator\Generators\OpenApiGenerator;

app(OpenApiGenerator::class)->generateDocs();

For a specific documentation set:

use Langsys\OpenApiDocsGenerator\Generators\GeneratorFactory;

GeneratorFactory::make('v2')->generateDocs();

Testing

./vendor/bin/pest

License

MIT

langsys / swagger-auto-generator

Maintainers

Package info

Statistics

Security

README

How It Works

Requirements

Installation

Quick Start

Attributes

#[Example]

#[Description]

#[Omit]

#[GroupedCollection]

Supported Property Types

Enum Example

Nested Data Classes

Auto-Generated Response Schemas

Example Generation (Faker)

1. Faker Attribute Mapper

2. Custom Functions

3. Direct Faker Fallback

Invoking Faker Directly from #[Example]

Artisan Commands

openapi:generate

openapi:dto

Configuration Reference

Multiple Documentation Sets

Security Definitions

YAML Output

Server / Base Path

OpenAPI Spec Version

Constants

Scan Options

Endpoint Parameter Enrichment

Setup

How It Works

Custom Resolver

Viewing Your Docs

Programmatic Usage

Testing

License

`#[Example]`

`#[Description]`

`#[Omit]`

`#[GroupedCollection]`

Invoking Faker Directly from `#[Example]`

`openapi:generate`

`openapi:dto`