From d651eb45716f6d1de8131bc57b734bc716c679d1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A1ra=20El-Saig?= <sara.el-saig@lombiq.com>
Date: Thu, 9 Nov 2023 16:35:39 +0100
Subject: [PATCH] Copy UpdateModelExtensions from OCC.

---
 .../Mvc/UpdateModelExtensions.cs               | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 Lombiq.HelpfulLibraries.OrchardCore/Mvc/UpdateModelExtensions.cs

diff --git a/Lombiq.HelpfulLibraries.OrchardCore/Mvc/UpdateModelExtensions.cs b/Lombiq.HelpfulLibraries.OrchardCore/Mvc/UpdateModelExtensions.cs
new file mode 100644
index 00000000..7a9cfe6a
--- /dev/null
+++ b/Lombiq.HelpfulLibraries.OrchardCore/Mvc/UpdateModelExtensions.cs
@@ -0,0 +1,18 @@
+using Microsoft.AspNetCore.Mvc.ModelBinding;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace OrchardCore.DisplayManagement.ModelBinding;
+
+public static class UpdateModelExtensions
+{
+    public static IEnumerable<ModelError> GetModelErrors(this IUpdateModel updateModel) =>
+        updateModel
+            .ModelState
+            .Values
+            .SelectMany(entry => entry.Errors)
+            .Where(error => !string.IsNullOrWhiteSpace(error.ErrorMessage));
+
+    public static IEnumerable<string> GetModelErrorMessages(this IUpdateModel updateModel) =>
+        updateModel.GetModelErrors().Select(error => error.ErrorMessage);
+}