From 6918bc746f568db966f4471a934a94101146f57e Mon Sep 17 00:00:00 2001
From: Sebastian <sebastian@squidex.io>
Date: Thu, 27 Jul 2023 11:56:26 +0200
Subject: [PATCH] Fix rule handler.

---
 .../Contents/ContentChangedTriggerHandler.cs           | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/backend/src/Squidex.Domain.Apps.Entities/Contents/ContentChangedTriggerHandler.cs b/backend/src/Squidex.Domain.Apps.Entities/Contents/ContentChangedTriggerHandler.cs
index c37deed8a0..ac0a3bba9d 100644
--- a/backend/src/Squidex.Domain.Apps.Entities/Contents/ContentChangedTriggerHandler.cs
+++ b/backend/src/Squidex.Domain.Apps.Entities/Contents/ContentChangedTriggerHandler.cs
@@ -244,9 +244,13 @@ public bool Trigger(EnrichedEvent @event, RuleTrigger trigger)
 
     private bool TriggerReferences(EnrichedEvent @event, Rule rule)
     {
-        var trigger = (ContentChangedTriggerV2)rule.Trigger;
+        // This method is only called once per event, therefore we could also have other rules.
+        if (rule.Trigger is not ContentChangedTriggerV2 contentTrigger)
+        {
+            return false;
+        }
 
-        return MatchesAnySchema(trigger.ReferencedSchemas, @event);
+        return MatchesAnySchema(contentTrigger.ReferencedSchemas, @event);
     }
 
     private bool MatchesAnySchema(ReadonlyList<SchemaCondition>? schemas, EnrichedEvent @event)
@@ -270,7 +274,7 @@ private bool MatchesAnySchema(ReadonlyList<SchemaCondition>? schemas, EnrichedEv
         return false;
     }
 
-    private bool MatchesAnySchema(ReadonlyList<SchemaCondition>? schemas, AppEvent @event)
+    private static bool MatchesAnySchema(ReadonlyList<SchemaCondition>? schemas, AppEvent @event)
     {
         if (schemas == null)
         {