From 57151c879376374425adb04fb68dad2cf7930df8 Mon Sep 17 00:00:00 2001
From: 杨宇千 <crupest@outlook.com>
Date: Mon, 5 Aug 2019 18:58:56 +0800
Subject: 3 things.

1. Exchange Models and Entities namespace.
2. Fix the bug that input with missing field leads to 500.
3. Write unit tests.
---
 Timeline/Helpers/InvalidModelResponseFactory.cs | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Timeline/Helpers/InvalidModelResponseFactory.cs

(limited to 'Timeline/Helpers/InvalidModelResponseFactory.cs')

diff --git a/Timeline/Helpers/InvalidModelResponseFactory.cs b/Timeline/Helpers/InvalidModelResponseFactory.cs
new file mode 100644
index 00000000..e5c87d9e
--- /dev/null
+++ b/Timeline/Helpers/InvalidModelResponseFactory.cs
@@ -0,0 +1,25 @@
+using Microsoft.AspNetCore.Mvc;
+using System.Text;
+using Timeline.Models.Http;
+
+namespace Timeline.Helpers
+{
+    public static class InvalidModelResponseFactory
+    {
+        public static IActionResult Factory(ActionContext context)
+        {
+            var modelState = context.ModelState;
+
+            var messageBuilder = new StringBuilder();
+            foreach (var model in modelState)
+                foreach (var error in model.Value.Errors)
+                {
+                    messageBuilder.Append(model.Key);
+                    messageBuilder.Append(" : ");
+                    messageBuilder.AppendLine(error.ErrorMessage);
+                }
+
+            return new BadRequestObjectResult(CommonResponse.InvalidModel(messageBuilder.ToString()));
+        }
+    }
+}
-- 
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