Kostache_Layout: Load content as mustache source

This fixes issues caused by the content partial being rendered and then
injected as a partial in the layout template and being rendered again

classes/Kohana/Kostache.php

@@ -40,11 +40,18 @@ public function render($class, $template = NULL)
 	{
 		if ($template == NULL)
 		{
-			$template = explode('_', get_class($class));
-			array_shift($template);
-			$template = implode('/', $template);
+			$template = $this->_detect_template_path($class);
 		}
 
 		return $this->_engine->loadTemplate($template)->render($class);
 	}
+
+	protected function _detect_template_path($class)
+	{
+		$path = explode('_', get_class($class));
+		array_shift($path);
+
+		return implode('/', $path);
+	}
+
 }

classes/Kohana/Kostache/Layout.php

@@ -34,11 +34,13 @@ public function set_layout($layout)
 
 	public function render($class, $template = NULL)
 	{
-		$this->_engine->setPartials(
-			array(
-				Kostache_Layout::CONTENT_PARTIAL => parent::render($class, $template)
-			)
-		);
+		$content = $this->_engine
+			->getLoader()
+			->load($this->_detect_template_path($class));
+
+		$this->_engine->setPartials(array(
+			Kostache_Layout::CONTENT_PARTIAL => $content
+		));
 
 		return $this->_engine->loadTemplate($this->_layout)->render($class);
 	}