From 321f7eaa1f1a49cae80fda152d111f329f25dbcc Mon Sep 17 00:00:00 2001
From: Samuel Georges <sam@daftspunk.com>
Date: Sun, 29 Dec 2019 15:40:28 +1100
Subject: [PATCH] Catch fatal errors after cycling page action

This is a complex issues where a "model not found" exception is getting thrown during the `pageAction` cycle, then getting suppressed by the fatal error handler:

try {
    // RelationController throws error here
}
catch (Exception $ex) {
    $this->controller->handleError($ex);
}

Fixes #4784
---
 modules/backend/behaviors/RelationController.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/backend/behaviors/RelationController.php b/modules/backend/behaviors/RelationController.php
index 4f72e224d..20b55decc 100644
--- a/modules/backend/behaviors/RelationController.php
+++ b/modules/backend/behaviors/RelationController.php
@@ -290,6 +290,10 @@ class RelationController extends ControllerBehavior
         }
 
         $this->controller->pageAction();
+        if ($fatalError = $this->controller->getFatalError()) {
+            throw new ApplicationException($fatalError);
+        }
+
         $this->validateField();
         $this->prepareVars();
         $this->initialized = true;