zfegg/callable-handler-decorator

This package is abandoned and no longer maintained. The author suggests using the zfegg/psr-mvc package instead.

Using MVC for PSR applications, like dotnet core MVC.

3.0.0 2023-09-13 16:23 UTC

Requires

• php: >=8.0
• psr/container: ^1.0 || ^2.0
• psr/http-server-handler: ^1.0

Requires (Dev)

• laminas/laminas-config-aggregator: ^1.7
• laminas/laminas-di: ^3.9
• laminas/laminas-diactoros: ^2.5
• laminas/laminas-servicemanager: ^3.6
• mezzio/mezzio: ^3.6
• mezzio/mezzio-fastroute: ^3.3
• mezzio/mezzio-router: ^3.7.0
• monolog/monolog: ^2.0 || ^3.0
• phpunit/phpunit: ^9.5
• slevomat/coding-standard: ^7.0
• symfony/property-access: ^5.4 || ^6.0
• symfony/serializer: ^5.4 || ^6.0
• willdurand/negotiation: ^3.0
• zfegg/expressive-test: ^0.6.1

Suggests

• symfony/serializer: Serialize action result required.

MIT

• Moln

• mvc
• controller
• handler
• psr

README

English | 简体中文

PSR MVC handler

Using MVC style for PSR handler applications, like dotnet core MVC.
Using the PHP attributes (annotations), convert the controller to PSR15 RequestHandlerInterface object.

Installation

composer require zfegg/psr-mvc

Usage

Attributes usage like dotnet core MVC

MVC Route

Getting started with Mezzio

// File config/config.php
// Add ConfigProvider 

new ConfigAggregator([
  Zfegg\PsrMvc\ConfigProvider::class,
]);

// config/autoload/global.php
use Zfegg\PsrMvc\Container\HandlerFactory;

return [
    // Add scan controllers paths
    \Zfegg\PsrMvc\Routing\RouteMetadata::class => [
        'paths' => ['path/to/Controller'],
        'cacheFile' => 'data/cache/route-meta.php', // For cache routes
    ]
];

// path/to/Controller/HomeController.php
public class HomeController
{
    #[Route("/")]
    #[Route("/home")]
    #[Route("/home/index")]
    #[Route("/home/index/{id?}")]
    public index(?int $id)
    {
        return new HtmlResponse();
    }

    #[Route("/home/about")]
    #[Route("/home/about/{id}")]
    public about(?int $id)
    {
        return new HtmlResponse();
    }
}

Attributes

• Route(string $path, array $middlewares = [], ?string $name = null, array $options = [], ?array $methods = null)
• HttpGet(string $path, array $middlewares = [], ?string $name = null, array $options = [])
• HttpPost(string $path, array $middlewares = [], ?string $name = null, array $options = [])
• HttpPatch(string $path, array $middlewares = [], ?string $name = null, array $options = [])
• HttpPut(string $path, array $middlewares = [], ?string $name = null, array $options = [])
• HttpDelete(string $path, array $middlewares = [], ?string $name = null, array $options = [])
• HttpHead(string $path, array $middlewares = [], ?string $name = null, array $options = [])

Register routes by PHP attributes.

return [
  RouteMetadata::class => [
    // Scan controller paths.
    'paths' => [
       'path/Controller',
    ],
  ],
]

The following code applies #[Route("/[controller]/[action]")] to the controller:

public class HomeController
{
    #[Route("/")]
    #[Route("/home")]
    #[Route("/home/index")]
    #[Route("/home/index/{id?}")]
    public index(?int $id)
    {
        return new HtmlResponse();
    }

    #[Route("/home/about")]
    #[Route("/home/about/{id}")]
    public about(?int $id)
    {
        return new HtmlResponse();
    }
}

Combining attribute routes

use Psr\Http\Message\ResponseInterface;

#[Route("/api/[controller]")] // Route prefix `/api/products`
class ProductsController {

    #[HttpGet]   // GET /api/products
    public function listProducts(): array {
        return $db->fetchAllProducts();
    }
    
    // Route path `/api/products/{id}`
    #[HttpGet('{id}')] // GET /api/products/123
    public function getProduct(int $id): object {
        return $db->find($id);
    }
    
    #[HttpPost]  // POST /api/products
    public function create(#[FromBody(root: true)] array $data): object {
        $db->save($data);
        // ...
        return $db->find($lastInsertId);
    }
}

Wrap controller handler

Using param attributes

• FromAttribute(?string $name = null)
  • $name default is the parameter name
• FromBody(?string $name = null, ?bool $root = false, array $serializerContext = [])
  • $name default is the parameter name
• FromContainer(?string $name = null)
  • $name default is the parameter type
• FromCookie(?string $name = null)
  • $name default is the parameter name
• FromHeader(?string $name = null)
  • $name default is the parameter name
• FromQuery(?string $name = null)
  • $name default is the parameter name
• FromServer(string $name)

use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;

/*
POST /api/example/hello?page=1
Host: localhost
Cookie: PHPSESSION=xxx

name=foo
*/

class ExampleController {
    #[HttpPost('/api/[controller]/[action]')] 
    public function post(
        #[FromQuery]
        int $page,              // 1
        #[FromBody]
        string $name,           // "foo"
        #[FromContainer('db')]
        \PDO $container,        // object(PDO)
        #[FromCookie('PHPSESSION')]
        string $sessionId,      // "xxx"
        #[FromHeader]
        string $host,           // "localhost"
        #[FromServer('REMOTE_ADDR')]
        string $ip,             // "127.0.0.1"
    ): void {
        return ;
    }
    
    // Default binding params
    #[HttpPost('/api/[controller]/[action]/{id}')] 
    public function hello(
       ServerRequestInterface $request,  // Default bind `$request`.
       int $id,    // Default bind `$request->getAttribute('id')`.
       Foo $foo,   // If container exists the `Foo`, default bind `$container->get('id')`.
       Bar $bar,   // Default bind `$request->getAttribute(Bar::class, $request->getAttribute('bar'))`.
    ): void {
    }
}

Default param bindings

class ExampleController {
    #[HttpPost('/api/[controller]/[action]/{id}')] 
    public function hello(
       ServerRequestInterface $request,  // Default bind `$request`.
       int $id,    // Default bind `$request->getAttribute('id')`.
       Foo $foo,   // If container exists the `Foo`, default bind `$container->get('id')`.
       Bar $bar,   // Default bind `$request->getAttribute(Bar::class, $request->getAttribute('bar'))`.
    ): void {
    }
}

Prepare result to PSR response.

Resolves various types of method results convert to 'Psr\Http\Message\ResponseInterface'. For resolve callback result to ResponseInterface.

Zfegg\PsrMvc\Preparer\SerializationPreparer

class ExampleResponseController {
    #[HttpPost('/hello-void')]  // `void` -> HTTP 204 No Content
    public function helloVoid(): void {
    }

    /*
     *  If result is string, then convert to `HtmlResponse` object.
     *  `new HtmlResponse($result)`
     */
    #[HttpPost('/hello-string')]
    public function helloString(): string {
      return '<h1>Hello</h1>';
    }
    
    /*
     *  If result is array, default convert to `JsonResponse` object.
     *  `new JsonResponse($result)`
     */
    #[HttpPost('/hello-array')]
    public function helloArray(): array {
      return ['foo' => 'a', 'bar' => 'b'];
    }
}

Zfegg\PsrMvc\Preparer\SerializationPreparer (Recommend)

Serialize by symfony/serializer and write the response body.

class ExampleResponseController {
    #[HttpPost('/hello-void')]  // `void` -> HTTP 204 No Content
    public function helloVoid(): void {
    }

    /*
     * Serialize by `symfony/serializer`.
     * The serialization format is parsed by `FormatMatcher`.
     * <code>
     * $result = $serializer->serialize($result, $format);
     * $response->withBody($result);
     * </code>
     */
    #[HttpPost('/hello-foo')]
    public function hello(): Foo {
     return new Foo();
    }
}

Preparer options:

Key	description
status	Http response code.
headers	Http response headers.
<more>	$serializer->serialize context variables.

The PrepareResult attribute

Using #[PrepareResult] attribute to select a preparer and pass the context.

use \Zfegg\PsrMvc\Preparer\SerializationPreparer;
use Zfegg\PsrMvc\Attribute\PrepareResult;

class ExampleResponseController {
    #[HttpPost('/hello-void')]  // `void` -> HTTP 204 No Content
    public function helloVoid(): void {
    }

    /*
     * 选用 `SerializationPreparer` 预处理器, 处理结果.
     */
    #[HttpPost('/hello-foo')]
    #[PrepareResult(SerializationPreparer::class, ['status' => 201, 'headers' => ['X-Test' => 'foo']])]
    public function hello(): Foo {
     return new Foo();
    }
}

Example for Mezzio :

// Class file HelloController.php

class HelloController {
  public function say(
    \Psr\Http\Message\ServerRequestInterface $request, // Inject request param
    string $name, // Auto inject param from $request->getAttribute('name').
    Foo $foo     // Auto inject param from container.
  ) {
    return new TextResponse('hello ' . $name);
  }
}

// File config/config.php
// Add ConfigProvider 

new ConfigAggregator([
  Zfegg\PsrMvc\ConfigProvider::class,
]);

// config/autoload/global.php
// Add demo class factories

use Zfegg\PsrMvc\Container\HandlerFactory;

return [
    'dependencies' => [
        'invokables' => [
            Hello::class,
        ],
        'factories' => [
            Hello::class . '@say' => HandlerFactory::class, 
        ],
    ]
];

Register route without attribute.

Using CallableHandlerAbstractFactory register route.

// config/autoload/global.php
// Add demo class factories

use Zfegg\PsrMvc\Container\CallbackHandlerAbstractFactory;

return [
    'dependencies' => [
        'factories' => [
            ExampleController::class . '@fooMethod' => CallbackHandlerAbstractFactory::class, 
        ],
    ]
];

$app->get('/foo-method', ExampleController::class . '@fooMethod')

Register abstract factory in laminas/laminias-servicemanager.

// config/autoload/global.php
// Add demo class factories

use Zfegg\PsrMvc\Container\CallbackHandlerAbstractFactory;

return [
    'dependencies' => [
        'invokables' => [
            Hello::class,
        ],
        'abstract_factories' => [
            CallbackHandlerAbstractFactory::class, 
        ],
    ]
];

class User {
  function create() {}
  function getList() {}
  function get($id) {}
  function delete($id) {}
}

// CallableHandlerDecorator abstract factory.
$container->get('User@create');
$container->get('User@getList');
$container->get('User@get');
$container->get('User@delete');

ErrorHandler for mezzio

Rich error handling,

Response to json format

Throw exception in handler.

use \Zfegg\PsrMvc\Exception\AccessDeniedHttpException;
use \Zfegg\PsrMvc\Attribute\HttpGet;

class FooController {
  #[HttpGet("/api/foo")]
  public function fooAction() {
    throw new AccessDeniedHttpException("Foo", code: 100);
  }
}

When request is ajax will response to json result:

HTTP/1.1 403 Forbidden

{"message":"Foo","code":100}

logging errors

When errors occur, you may want to listen for them in order to provide features such as logging. See https://docs.mezzio.dev/mezzio/v3/features/error-handling/#listening-for-errors

use Laminas\Stratigility\Middleware\ErrorHandler;
use Zfegg\PsrMvc\Container\LoggingError\LoggingErrorDelegator;

return [
    'dependencies' => [
        'delegators' => [
            ErrorHandler::class => [
                LoggingErrorDelegator::class,
            ],
        ],
    ],
];