From 2f04411275e1f4f377a3f708e0bd0402e41a536f Mon Sep 17 00:00:00 2001
From: Eric Lippmann <eric.lippmann@icinga.com>
Date: Tue, 15 Oct 2019 15:16:33 +0200
Subject: [PATCH] Make actions interceptable with yield

---
 library/Eagle/Web/Controller.php | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/library/Eagle/Web/Controller.php b/library/Eagle/Web/Controller.php
index b1be2a3c..2715bdb1 100644
--- a/library/Eagle/Web/Controller.php
+++ b/library/Eagle/Web/Controller.php
@@ -2,6 +2,7 @@
 
 namespace Icinga\Module\Eagle\Web;
 
+use Generator;
 use Icinga\Data\ResourceFactory;
 use Icinga\Module\Eagle\Widget\ViewModeSwitcher;
 use ipl\Stdlib\Contract\PaginationInterface;
@@ -107,4 +108,33 @@ class Controller extends CompatController
 
         return $viewModeSwitcher;
     }
+
+    public function dispatch($action)
+    {
+        // Notify helpers of action preDispatch state
+        $this->_helper->notifyPreDispatch();
+
+        $this->preDispatch();
+
+        if ($this->getRequest()->isDispatched()) {
+            // If pre-dispatch hooks introduced a redirect then stop dispatch
+            // @see ZF-7496
+            if (! $this->getResponse()->isRedirect()) {
+                $interceptable = $this->$action();
+                if ($interceptable instanceof Generator) {
+                    foreach ($interceptable as $stopSignal) {
+                        if ($stopSignal === true) {
+                            break;
+                        }
+                    }
+                }
+            }
+            $this->postDispatch();
+        }
+
+        // whats actually important here is that this action controller is
+        // shutting down, regardless of dispatching; notify the helpers of this
+        // state
+        $this->_helper->notifyPostDispatch();
+    }
 }