Create an error making trait

Widgets can throw fatal errors too

modules/backend/classes/Controller.php

@@ -15,7 +15,6 @@ use BackendAuth;
 use Backend\Models\UserPreference;
 use Backend\Models\Preference as BackendPreference;
 use Cms\Widgets\MediaManager;
-use System\Classes\ErrorHandler;
 use October\Rain\Exception\AjaxException;
 use October\Rain\Exception\SystemException;
 use October\Rain\Exception\ValidationException;
@@ -37,13 +36,9 @@ class Controller extends Extendable
     use \System\Traits\AssetMaker;
     use \System\Traits\ConfigMaker;
     use \System\Traits\EventEmitter;
+    use \Backend\Traits\ErrorMaker;
     use \Backend\Traits\WidgetMaker;
 
-    /**
-     * @var string Object used for storing a fatal error.
-     */
-    protected $fatalError;
-
     /**
      * @var object Reference the logged in admin user.
      */
@@ -610,16 +605,6 @@ class Controller extends Extendable
         return $this;
     }
 
-    /**
-     * Sets standard page variables in the case of a controller error.
-     */
-    public function handleError($exception)
-    {
-        $errorMessage = ErrorHandler::getDetailedMessage($exception);
-        $this->fatalError = $errorMessage;
-        $this->vars['fatalError'] = $errorMessage;
-    }
-
     //
     // Hints
     //

modules/backend/classes/WidgetBase.php

@@ -18,6 +18,7 @@ abstract class WidgetBase extends Extendable
     use \System\Traits\AssetMaker;
     use \System\Traits\ConfigMaker;
     use \System\Traits\EventEmitter;
+    use \Backend\Traits\ErrorMaker;
     use \Backend\Traits\WidgetMaker;
     use \Backend\Traits\SessionMaker;
 

modules/backend/traits/ErrorMaker.php

@@ -0,0 +1,28 @@
+<?php namespace Backend\Traits;
+
+use System\Classes\ErrorHandler;
+
+/**
+ * Error Maker Trait
+ * Adds exception based methods to a class, goes well with `System\Traits\ViewMaker`.
+ *
+ * @package october\backend
+ * @author Alexey Bobkov, Samuel Georges
+ */
+trait ErrorMaker
+{
+    /**
+     * @var string Object used for storing a fatal error.
+     */
+    protected $fatalError;
+
+    /**
+     * Sets standard page variables in the case of a controller error.
+     */
+    public function handleError($exception)
+    {
+        $errorMessage = ErrorHandler::getDetailedMessage($exception);
+        $this->fatalError = $errorMessage;
+        $this->vars['fatalError'] = $errorMessage;
+    }
+}

modules/system/traits/ViewMaker.php

@@ -13,10 +13,9 @@ use Symfony\Component\Debug\Exception\FatalThrowableError;
  * View Maker Trait
  * Adds view based methods to a class
  *
- * @package october\backend
+ * @package october\system
  * @author Alexey Bobkov, Samuel Georges
  */
-
 trait ViewMaker
 {
     /**