API Controller is not passed to handler as param

instead we use pushCurrent to set it as current controller

src/BulkManager/BulkAction/EditHandler.php

@@ -451,4 +451,52 @@ class EditHandler extends Handler
         return Controller::curr()->redirect($this->Link('?records[]=' . implode('&records[]=', $ids)));
         //return Controller::curr()->redirect($form->Backlink); //returns to gridField
     }
+
+    /**
+     * Traverse up nested requests until we reach the first that's not a GridFieldDetailForm or GridFieldDetailForm_ItemRequest.
+     * The opposite of {@link Controller::curr()}, required because
+     * Controller::$controller_stack is not directly accessible.
+     *
+     * @return Controller
+     */
+    protected function getToplevelController()
+    {
+        $c = Controller::curr();
+        while ($c && ($c instanceof GridFieldDetailForm_ItemRequest || $c instanceof GridFieldDetailForm)) {
+            $c = $c->getController();
+        }
+
+        return $c;
+    }
+
+    /**
+     * Edited version of the GridFieldEditForm function
+     * adds the 'Bulk Upload' at the end of the crums.
+     *
+     * CMS-specific functionality: Passes through navigation breadcrumbs
+     * to the template, and includes the currently edited record (if any).
+     * see {@link LeftAndMain->Breadcrumbs()} for details.
+     *
+     * @author SilverStripe original Breadcrumbs() method
+     *
+     * @see GridFieldDetailForm_ItemRequest
+     *
+     * @param bool $unlinked
+     *
+     * @return ArrayData
+     */
+    public function Breadcrumbs($unlinked = false)
+    {
+        if (!Controller::curr()->hasMethod('Breadcrumbs')) {
+            return;
+        }
+
+        $items = Controller::curr()->Breadcrumbs($unlinked);
+        $items->push(new ArrayData(array(
+            'Title' => 'Bulk Editing',
+            'Link' => false,
+        )));
+
+        return $items;
+    }
 }

src/BulkManager/BulkAction/Handler.php

@@ -40,13 +40,6 @@ class Handler extends RequestHandler
      */
     protected $component;
 
-    /**
-     * Current controller instance.
-     *
-     * @var Controller
-     */
-    protected $controller;
-
     /**
      * Front-end label for this handler's action
      * 
@@ -87,13 +80,11 @@ class Handler extends RequestHandler
     /**
      * @param GridField            $gridField
      * @param GridField_URLHandler $component
-     * @param Controller           $controller
      */
-    public function __construct($gridField = null, $component = null, $controller = null)
+    public function __construct($gridField = null, $component = null)
     {
         $this->gridField = $gridField;
         $this->component = $component;
-        $this->controller = $controller;
 
         parent::__construct();
     }
@@ -249,54 +240,6 @@ class Handler extends RequestHandler
         return Controller::join_links($this->gridField->Link(), 'bulkAction', $action);
     }
 
-    /**
-     * Traverse up nested requests until we reach the first that's not a GridFieldDetailForm or GridFieldDetailForm_ItemRequest.
-     * The opposite of {@link Controller::curr()}, required because
-     * Controller::$controller_stack is not directly accessible.
-     *
-     * @return Controller
-     */
-    protected function getToplevelController()
-    {
-        $c = $this->controller;
-        while ($c && ($c instanceof GridFieldDetailForm_ItemRequest || $c instanceof GridFieldDetailForm)) {
-            $c = $c->getController();
-        }
-
-        return $c;
-    }
-
-    /**
-     * Edited version of the GridFieldEditForm function
-     * adds the 'Bulk Upload' at the end of the crums.
-     *
-     * CMS-specific functionality: Passes through navigation breadcrumbs
-     * to the template, and includes the currently edited record (if any).
-     * see {@link LeftAndMain->Breadcrumbs()} for details.
-     *
-     * @author SilverStripe original Breadcrumbs() method
-     *
-     * @see GridFieldDetailForm_ItemRequest
-     *
-     * @param bool $unlinked
-     *
-     * @return ArrayData
-     */
-    public function Breadcrumbs($unlinked = false)
-    {
-        if (!$this->controller->hasMethod('Breadcrumbs')) {
-            return;
-        }
-
-        $items = $this->controller->Breadcrumbs($unlinked);
-        $items->push(new ArrayData(array(
-            'Title' => 'Bulk Editing',
-            'Link' => false,
-        )));
-
-        return $items;
-    }
-
     /**
      * Returns the list of record IDs selected in the front-end.
      *

src/BulkManager/BulkManager.php

@@ -349,7 +349,8 @@ class BulkManager implements GridField_HTMLProvider, GridField_ColumnProvider, G
         $actionUrlSegment = $request->shift();
         $handlerClass = $this->config['actions'][$actionUrlSegment];
 
-        $handler = Injector::inst()->create($handlerClass, $gridField, $this, $controller);
+        $controller->pushCurrent();
+        $handler = Injector::inst()->create($handlerClass, $gridField, $this);
         if ($handler)
         {
             return $handler->handleRequest($request);

src/BulkUploader/BulkUploadHandler.php

@@ -33,13 +33,6 @@ class BulkUploadHandler extends RequestHandler
      */
     protected $component;
 
-    /**
-     * Gridfield Form controller.
-     *
-     * @var Controller
-     */
-    protected $controller;
-
     /**
      * RequestHandler allowed actions.
      *
@@ -65,11 +58,10 @@ class BulkUploadHandler extends RequestHandler
      * @param GridField_URLHandler $component
      * @param Controller           $controller
      */
-    public function __construct($gridField, $component, $controller)
+    public function __construct($gridField, $component)
     {
         $this->gridField = $gridField;
         $this->component = $component;
-        $this->controller = $controller;
         parent::__construct();
     }
 

src/BulkUploader/BulkUploader.php

@@ -331,8 +331,8 @@ class BulkUploader implements GridField_HTMLProvider, GridField_URLHandler
      */
     public function handleBulkUpload($gridField, $request)
     {
-        $controller = $gridField->getForm()->getController();
+        $gridField->getForm()->getController()->pushCurrent();
-        $handler = new \Colymba\BulkUpload\BulkUploadHandler($gridField, $this, $controller);
+        $handler = new \Colymba\BulkUpload\BulkUploadHandler($gridField, $this);
 
         return $handler->handleRequest($request);
     }