Add auto decode body option for JSON layer

src/Elements/ErrorHandlingLayer.php

@@ -32,7 +32,7 @@ public function __invoke(Request $request)
         } catch (\Exception $ex) {
             $this->logger->error($ex);
 
-            return new Response($ex->getMessage(), 500);
+            throw new HttpException(500, 'Unhandled exception', $ex);
         }
     }
 }

src/Elements/HttpLayerBuilder.php

@@ -7,6 +7,7 @@
 
 class HttpLayerBuilder implements LayerBuilder
 {
+
     /**
      *
      * (non-PHPdoc) @see \Aztech\LayerBuilder::buildLayer()

src/Elements/JsonRenderingLayer.php

@@ -12,9 +12,12 @@ class JsonRenderingLayer implements Layer
 {
     private $callable;
 
-    public function __construct(Layer $callable)
+    private $mergeBody;
+
+    public function __construct(Layer $callable, $mergeBody)
     {
         $this->callable = $callable;
+        $this->mergeBody = (bool) $mergeBody;
     }
 
     public function __invoke(Request $request = null)
@@ -23,6 +26,26 @@ public function __invoke(Request $request = null)
             $request = Request::createFromGlobals();
         }
 
+        if ($this->mergeBody) {
+            $request = $this->mergeRequestBody($request);
+        }
+
+        return $this->runController($request);
+    }
+
+    private function mergeRequestBody(Request $request)
+    {
+        $body = json_decode($request->getContent(), true);
+
+        if (is_array($body)) {
+            $request->request->add($body);
+        }
+
+        return $request;
+    }
+
+    private function runController(Request $request)
+    {
         $callable = $this->callable;
 
         try {

src/Elements/JsonRenderingLayerBuilder.php

@@ -25,6 +25,8 @@ public function buildLayer(Layer $nextLayer, array $arguments)
             $nextLayer = $this->transformationLayerBuilder->buildLayer($nextLayer, $arguments);
         }
 
-        return new JsonRenderingLayer($nextLayer);
+        $mergeBody =  isset($arguments['mergeBody']) ? ((bool) $arguments['mergeBody']) : false;
+
+        return new JsonRenderingLayer($nextLayer, $mergeBody);
     }
 }