Fix #10 support for invokable objects

Author: fesor

src/RequestObjectBinder.php

@@ -109,9 +109,13 @@ private function matchActionArguments(callable $action)
         if (is_array($action)) {
             $classReflection = new \ReflectionClass($action[0]);
             $actionReflection = $classReflection->getMethod($action[1]);
-        } else {
+        } elseif ($action instanceof \Closure || is_string($action)) {
             $actionReflection = new \ReflectionFunction($action);
         }
+        else {
+            $classReflection = new \ReflectionClass($action);
+            $actionReflection = $classReflection->getMethod('__invoke');
+        }
 
         $matchedArguments = [];
         $arguments = $actionReflection->getParameters();

tests/RequestBinderTest.php

@@ -53,6 +53,19 @@ public function testRequestObjectBindingOnClosure()
         self::assertInstanceOf(RequestObject\RequestObject::class, $this->request->attributes->get('requestObj'));
     }
 
+    public function testRequestObjectBindingOnInvokableObject()
+    {
+        $action = new class() {
+            public function __invoke(RegisterUserRequest $requestObj)
+            {
+            }
+        };
+
+        (new RequestObjectBinder($this->payloadResolver, $this->validator))->bind($this->request, $action);
+        self::assertTrue($this->request->attributes->has('requestObj'));
+        self::assertInstanceOf(RequestObject\RequestObject::class, $this->request->attributes->get('requestObj'));
+    }
+
     public function testPassErrorsToAction()
     {
         $this->validRequest();