How to create routes in Slim Framework?

Slim Framework - Interview Questions

You can define application routes using proxy methods on the Slim\App instance. The Slim Framework provides methods for the most popular HTTP methods.

GET Route : You can add a route that handles only GET HTTP requests with the Slim application’s get() method. It accepts two arguments:

* The route pattern (with optional named placeholders)

* The route callback

$app->get('/books/{id}', function ($request, $response, array $args) {
    // Show book identified by $args['id']
});

POST Route : You can add a route that handles only POST HTTP requests with the Slim application’s post() method. It accepts two arguments:

* The route pattern (with optional named placeholders)

* The route callback

$app->post('/books', function ($request, $response, array $args) {
    // Create new book
});

PUT Route : You can add a route that handles only PUT HTTP requests with the Slim application’s put() method. It accepts two arguments:

* The route pattern (with optional named placeholders)

* The route callback

$app->put('/books/{id}', function ($request, $response, array $args) {
    // Update book identified by $args['id']
});

DELETE Route : You can add a route that handles only DELETE HTTP requests with the Slim application’s delete() method. It accepts two arguments:

* The route pattern (with optional named placeholders)

* The route callback

$app->delete('/books/{id}', function ($request, $response, array $args) {
    // Delete book identified by $args['id']
});

OPTIONS Route : You can add a route that handles only OPTIONS HTTP requests with the Slim application’s options() method. It accepts two arguments:

* The route pattern (with optional named placeholders)

* The route callback

$app->options('/books/{id}', function ($request, $response, array $args) {
    // Return response headers
});

PATCH Route : You can add a route that handles only PATCH HTTP requests with the Slim application’s patch() method. It accepts two arguments:

* The route pattern (with optional named placeholders)

* The route callback

$app->patch('/books/{id}', function ($request, $response, array $args) {
    // Apply changes to book identified by $args['id']
});

Any Route : You can add a route that handles all HTTP request methods with the Slim application’s any() method. It accepts two arguments:

* The route pattern (with optional named placeholders)

* The route callback

$app->any('/books/[{id}]', function ($request, $response, array $args) {
    // Apply changes to books or book identified by $args['id'] if specified.
    // To check which method is used: $request->getMethod();
});

Note that the second parameter is a callback. You could specify a Class which implementes the __invoke() method instead of a Closure. You can then do the mapping somewhere else:

$app->any('/user', 'MyRestfulController');

Custom Route : You can add a route that handles multiple HTTP request methods with the Slim application’s map() method. It accepts three arguments:

* Array of HTTP methods

* The route pattern (with optional named placeholders)

* The route callback

$app->map(['GET', 'POST'], '/books', function ($request, $response, array $args) {
    // Create new book or list all books
});â€‹