Custom action of yii\rest\ActiveController that reads JSON input - json

Question

I have registered yii\web\JsonParser as an application request’s parser in order to enable JSON input:
'request' => [
'parsers' => [
'application/json' => 'yii\web\JsonParser',
]
]
Now, I want my custom action to handle JSON requests like the following one:
{
"one": 11,
"two": 2,
"three": 33
}
I am doing this by using bodyParams (source of this idea):
$bodyParams = Yii::$app->request->bodyParams;
$one = $bodyParams['one'] ?? false;
$two = $bodyParams['two'] ?? false;
$three = $bodyParams['three'] ?? false;
The whole controller's code looks like this:
<?php
namespace api\controllers;
use Yii;
use yii\rest\ActiveController;
class UserController extends ActiveController
{
public $modelClass = 'common\models\User';
public function verbs()
{
$verbs = parent::verbs();
$verbs['test'] = ['GET'];
return $verbs;
}
public function actionTest()
{
$bodyParams = Yii::$app->request->bodyParams;
$one = $bodyParams['one'] ?? false;
$two = $bodyParams['two'] ?? false;
$three = $bodyParams['three'] ?? false;
return [
'params' => [
'one' => $one,
'two' => $two,
'three' => $three,
]
];
}
}
Is there a better way of doing so (i.e. reading JSON directly as action's parameters etc.)?