Merge pull request #278 from pine3ree/patch-1

add custom json-flags ctor-param

src/Strategy/JsonStrategy.php

@@ -10,6 +10,10 @@
 use Psr\Http\Server\{MiddlewareInterface, RequestHandlerInterface};
 use Throwable;
 
+use function is_array;
+use function is_object;
+use function json_encode;
+
 class JsonStrategy extends AbstractStrategy implements ContainerAwareInterface
 {
     use ContainerAwareTrait;
@@ -19,14 +23,20 @@ class JsonStrategy extends AbstractStrategy implements ContainerAwareInterface
      */
     protected $responseFactory;
 
+    /**
+     * @var int
+     */
+    protected $jsonFlags;
+
     /**
      * Construct.
      *
      * @param ResponseFactoryInterface $responseFactory
      */
-    public function __construct(ResponseFactoryInterface $responseFactory)
+    public function __construct(ResponseFactoryInterface $responseFactory, int $jsonFlags = 0)
     {
         $this->responseFactory = $responseFactory;
+        $this->jsonFlags = $jsonFlags;
 
         $this->addDefaultResponseHeader('content-type', 'application/json');
     }
@@ -40,7 +50,7 @@ public function invokeRouteCallable(Route $route, ServerRequestInterface $reques
         $response = $controller($request, $route->getVars());
 
         if ($this->isJsonEncodable($response)) {
-            $body     = json_encode($response);
+            $body     = json_encode($response, $this->jsonFlags);
             $response = $this->responseFactory->createResponse();
             $response->getBody()->write($body);
         }