rancoud / router

Router Package

Router Package

Router PSR7 and PSR15.

Installation

composer require rancoud/router

Dependencies

Http package: https://github.com/rancoud/Http

How to use it?

General Case

// Instantiation
$router = new Router();

// Add routes
$router->get('/posts', function ($request, $next) {
    return (new MessageFactory())->createResponse(200, null, [], 'ok');
});

// Find route
$found = $router->findRoute('GET', '/posts');

// You can use PSR-7 request for finding Route
$found = $router->findRouteRequest(new \Rancoud\Http\Message\ServerRequest('GET', '/posts'));

// Dispatch (response is a PSR7 object \Psr\Http\Message\Response)
$response = $router->dispatch($request);

// Display Response
$response->send();

Routes shortcuts

// Methods shortcuts
$router->get('/posts/{id}', function ($request, $next) {});
$router->post('/posts/{id}', function ($request, $next) {});
$router->put('/posts/{id}', function ($request, $next) {});
$router->patch('/posts/{id}', function ($request, $next) {});
$router->delete('/posts/{id}', function ($request, $next) {});
$router->options('/posts/{id}', function ($request, $next) {});

// Any methods
$router->any('/posts/{id}', function ($request, $next) {});

// CRUD method
$router->crud('/posts', function ($request, $next) {});

Route Parameters

Use the pattern {name} for naming your parameters

$router->get('/posts/{id}', function ($request, $next) {});

Constraints

Use regex syntax for your constraints

// inline for simple case
$router->get('/{id:\d+}', function ($request, $next) {});

// complex
$route = new Route('GET', '/{id}', function ($request, $next) {});
$route->setParametersConstraints(['id' => '\d+']);

You can setup a global constraint when you use the same regex multiple times

$router->setGlobalParametersConstraints(['lang' => 'en|fr']);

// {lang} will use the global constraints
$router->get('/article/{lang}', function ($request, $next) {});

// {lang} will use the local constraints define by the route
$router->get('/news/{lang}', function ($request, $next) {})->setParametersConstraints(['lang' => 'jp']);

You can use on each route an optional parameters.
The parameters {page} will be replace with the value 1 if it is not present

$route = new Route('GET', '/{id}/{page}', function ($request, $next) {});
$route->setOptionalsParameters(['page' => 1]);

Middlewares

// global middleware for router
$router->addGlobalMiddleware(function ($request, $next) {});

// middleware for only route
$route = new Route('GET', '/{id}', function ($request, $next) {});
$route->addMiddleware(function ($request, $next) {});

// for passing to next middleware
$router->addGlobalMiddleware(function ($request, $next) {
    $next($request);
});

// you can add an instance of Router as a middleware
$subRouter1 = new Router();
$subRouter1->any('/api/books/{id}', function ($req, $next){
    return (new MessageFactory())->createResponse(200, null, [], 'testRouterception books');
});

$subRouter2 = new Router();
$subRouter2->any('/api/peoples/{id}', function ($req, $next){
    return (new MessageFactory())->createResponse(200, null, [], 'testRouterception peoples');
});

$router->addGlobalMiddleware($subRouter1);
$router->addGlobalMiddleware($subRouter2);

Router in Route in Router

// you can add an instance of Router in a Route callback
$subRouter1 = new Router();
$subRouter1->any('/api/books/{id}', function ($req, $next){
    return (new MessageFactory())->createResponse(200, null, [], 'testRouterception books');
});

$subRouter2 = new Router();
$subRouter2->any('/api/peoples/{id}', function ($req, $next){
    return (new MessageFactory())->createResponse(200, null, [], 'testRouterception peoples');
});

$router->any('/api/books/{id}', $subRouter1);
$router->any('/api/peoples/{id}', $subRouter2);

Default 404

// you can set a default 404
$router->setDefault404( static function ($request, $next) {
    return (new \Rancoud\Http\Message\Factory\Factory())->createResponse(404, '')->withBody(Rancoud\Http\Message\Stream::create('404 content'));
});

// it will return false because no Route is matching
$found = $router->findRoute('GET', '/posts');

// response contains the default 404 callback
$response = $router->dispatch($request);

$response->send();

WARNING with 404 and Router as Middleware

// create new Router with default 404
$subRouter = new Router();
$subRouter->any('/posts/{id:\d+}', function ($req, $next){
   return (new MessageFactory())->createResponse(200, null, [], 'read 1 post');
});
$subRouter->setDefault404( static function ($request, $next) {
    return (new \Rancoud\Http\Message\Factory\Factory())->createResponse(404, '')->withBody(Rancoud\Http\Message\Stream::create('404 content from subRouter'));
});

// you can add a Router as middleware 
$router->any('/posts/{id}', $subRouter);

// it will return true because Router middleware is matching on /posts/{id}
$found = $router->findRoute('GET', '/posts/incorrect');

// response contains the default 404 callback from $subRouter
$response = $router->dispatch($request);

$response->send();

If you use Router as middleware AND set default 404 then findRouteRequest and findRoute will return true.
When calling dispatch it will use the callback setted as default 404 by the Router middleware.

Router Methods

General Commands

Add route

• addRoute(route: \Rancoud\Router\Route): void

Add route shortcuts

• get(url: string, callback: string|\Closure|\Psr\Http\Server\MiddlewareInterface|\Rancoud\Router\Router): \Rancoud\Router\Route
• post(url: string, callback: string|\Closure|\Psr\Http\Server\MiddlewareInterface|\Rancoud\Router\Router): \Rancoud\Router\Route
• put(url: string, callback: string|\Closure|\Psr\Http\Server\MiddlewareInterface|\Rancoud\Router\Router): \Rancoud\Router\Route
• patch(url: string, callback: string|\Closure|\Psr\Http\Server\MiddlewareInterface|\Rancoud\Router\Router): \Rancoud\Router\Route
• delete(url: string, callback: string|\Closure|\Psr\Http\Server\MiddlewareInterface|\Rancoud\Router\Router): \Rancoud\Router\Route
• options(url: string, callback: string|\Closure|\Psr\Http\Server\MiddlewareInterface|\Rancoud\Router\Router): \Rancoud\Router\Route
• any(url: string, callback: string|\Closure|\Psr\Http\Server\MiddlewareInterface|\Rancoud\Router\Router): void

Add route for a CRUD system

• crud(prefixPath: string, callback: string|\Closure|\Psr\Http\Server\MiddlewareInterface|\Rancoud\Router\Router): void

It will create all this routes:
GET $prefixPath
GET / POST $prefixPath . '/new'
GET / POST / DELETE $prefixPath . '/{id:\d+}'

Setup Router and Routes with an array

• setupRouterAndRoutesWithConfigArray(config: array): void

In this example you can setup router's middlewares and routes with an array

$config = [
    'router' => [
        'middlewares' => [
            'global_callback1',
            'global_callback2',
            'global_callback3'
        ],
        'constraints' => [
            'lang' => 'en|fr'
        ],
        'host' => '{service}.domain.{tld}',
        'host_constraint' => [
            'service' => 'api|backoffice|www|m',
            'tld' => 'en|jp'
        ],
        'default_404' => 'callable_404'
    ],
    'routes' => [
        [
            'methods' => ['GET'],
            'url' => '/articles/{id}',
            'callback' => 'route_callback',
            'constraints' => ['id' => '\w+'],
            'middlewares' => ['route_middleware1', 'route_middleware2'],
            'name' => 'route1'
        ],
        [
            'methods' => ['POST'],
            'url' => '/form',
            'callback' => 'callback',
        ],
        [
            'methods' => ['POST'],
            'url' => '/api/form',
            'callback' => 'callback',
            'host' => 'api.domain.{tld}',
            'host_constraint' => [
                'tld' => 'en|jp'
            ]
        ],
        [
            'methods' => ['GET'],
            'url' => '/blog/{page}',
            'callback' => 'callback',
            'optionals_parameters' => [
                'page' => '1'
            ]
        ]
    ]
];

$router = new Router();
$router->setupRouterAndRoutesWithConfigArray($config);

// you can add a Router as a callback
$subRoute = new Router();
$subRoute->setupRouterAndRoutesWithConfigArray($config);
$router->any('/(.*)', $subRoute);

Get Routes

• getRoutes(): \Rancoud\Router\Route[]

Find route

• findRoute(method: string, url: string, [host: string = null]): bool
• findRouteRequest(request: \Psr\Http\Message\ServerRequestInterface): bool
• getRouteParameters(): array

Run the found route

• dispatch(request: \Psr\Http\Message\ServerRequestInterface): \Psr\Http\Message\Response
• handle(request: \Psr\Http\Message\ServerRequestInterface): \Psr\Http\Message\Response

The difference between dispatch and handle is dispatch is used in first place.
Handle is from the PSR17 in Psr\Http\Message\ServerRequestInterface, it's useful for middleware.

Middlewares

• addGlobalMiddleware(middleware: \Closure|\Psr\Http\Server\MiddlewareInterface|\Rancoud\Router\Router|string): void
• setGlobalMiddlewares(middlewares: array): void

Global constraints

• setGlobalParametersConstraints(constraints: array): void
• setGlobalHostConstraints(constraints: array): void

Generate url for a named route

• generateUrl(routeName: string, [routeParameters: array = []]): ?string

Host constraints

• setGlobalHost(host: string): void

Default 404

• setDefault404(callback: mixed): void

Route Constructor

Settings

Mandatory

Parameter	Type	Description
methods	string | array	methods matching with the route
url	string	url to match
callback	string | Closure | \Psr\Http\Server\MiddlewareInterface | \Rancoud\Router\Router	callback when route is calling by router

Route Methods

General Commands

Getters/Setters

• getMethods(): array
• getUrl(): string
• getName(): string
• setName(name: string): void

Constraints

• setParametersConstraints(constraints: array): void
• getParametersConstraints(): array
• compileRegex(globalConstraints: array): string
• setOptionalsParameters(optionalsParameters: array): void
• getOptionalsParameters(): array

Callback

• getCallback(): mixed

Middlewares

• addMiddleware(middleware: \Closure|\Psr\Http\Server\MiddlewareInterface|\Rancoud\Router\Router|string): array
• getMiddlewares(): array

Generate Url

• generateUrl([routeParameters: array = []]): string

Host

• getHost(): ?string
• setHost(host: string, [hostConstraints: array = []]): void
• setHostConstraints(constraints: array): void
• isSameHost(host: string, globalConstraints: array = []): bool
• getHostParameters(): array

How to Dev

composer ci for php-cs-fixer and phpunit and coverage
composer lint for php-cs-fixer
composer test for phpunit and coverage

router's Issues

not returning 404 on wrong route

Basic Router configuration :

$config = [
        'router' => [
            'default_404' => function($request, $next) {
                return (new \Rancoud\Http\Message\Factory\Factory())->createResponse(404, '')->withBody(Rancoud\Http\Message\Stream::create('404'));
            }
        ]
    ];
$router->setupRouterAndRoutesWithConfigArray($config);
$router->get('/', IndexController::class, 'site.index');

On http://mysite.com => response 200 => OK
On http://mysite.com/doesnotexist => response null => should be response 400 ?

[FEATURE] Expose currentRoute

My problem

Sometimes middlewares need to know the route name found by Router

My suggestion

Add getCurrentRoute exposing attribute currentRoute