Fixed missing onAdminAfterDelete event call in Flex Pages

CHANGELOG.md

@@ -11,6 +11,7 @@
     * Fixed moving `Flex Page` to itself causing the page to be lost [#3227](https://github.com/getgrav/grav/issues/3227)
     * Fixed `PageStorage` from detecting files as pages
     * Fixed `UserIndex` not implementing `UserCollectionInterface`
+    * Fixed missing `onAdminAfterDelete` event call in `Flex Pages`
 
 # v1.7.9
 ## 03/19/2021

system/src/Grav/Common/Flex/Types/Pages/PageObject.php

@@ -298,6 +298,22 @@ class PageObject extends FlexPageObject
         return $instance;
     }
 
+    /**
+     * @return PageObject
+     */
+    public function delete()
+    {
+        $result = parent::delete();
+
+        // Backwards compatibility with older plugins.
+        $fireEvents = $this->isAdminSite() && $this->getFlexDirectory()->getConfig('object.compat.events', true);
+        if ($fireEvents) {
+            $this->grav->fireEvent('onAdminAfterDelete', new Event(['object' => $this]));
+        }
+
+        return $result;
+    }
+
     /**
      * Prepare move page to new location. Moves also everything that's under the current page.
      *