CakePHP Routing json response - json

Question

I am currently using RestApi plugin for CakePHP 3 and I want to be able to append the extension .json to URL, like so:
domain.com/api/search/abc.json
Following CakePHP's docs about creating RESTful routes I was able to use the extension without throwing an error.
I have this on my routes.php (edit to add the whole code)
use Cake\Core\Plugin;
use Cake\Routing\RouteBuilder;
use Cake\Routing\Router;
use Cake\Routing\Route\DashedRoute;
Router::defaultRouteClass(DashedRoute::class);
Router::scope('/', function (RouteBuilder $routes) {
$routes->connect('/', ['controller' => 'Pages', 'action' => 'display', 'home']);
$routes->connect('/pages/*', ['controller' => 'Pages', 'action' => 'display']);
$routes->fallbacks(DashedRoute::class);
});
Plugin::routes();
Router::scope('/', function ($routes) {
$routes->extensions(['json']);
});
In my controller, if I do this:
public function search($term=''){
$this->httpStatusCode = 200;
$this->apiResponse['term'] = $term;
}
The response is:
{
"status": "OK",
"result": {
"term": "abc.json" # Notice the .json
}
}
So, I get abc.json, when I want abc.
Am I doing something wrong? Or am I supposed to strip the .json from $term?

Answer 1

While reusing existing scopes will merge the connected routes to the same routes collection, calls to RouteBuilder::extensions() will generally not affect previously connected routes, and they also do not affect reused/reopened scopes.
Quote from the docs:
Future routes connected in through this builder will have the connected
extensions applied. However, setting extensions does not modify existing routes.
API > \Cake\Routing\RouteBuilder::extensions()
You should add the extensions() call in the existing routing scope, so that it affects the routes that are being connected in there after the extensions() call.
See also
Cookbook > Routing > Routing File Extensions