From 0bae9c9943a2ca6f87e0baea8f0c8043092e5a73 Mon Sep 17 00:00:00 2001
From: falcon <9504402@qq.com>
Date: Thu, 24 Nov 2022 10:57:57 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E6=A8=A1=E5=9E=8B=E9=AA=8C?=
 =?UTF-8?q?=E8=AF=81IsIntAttribute=EF=BC=8C=E8=A1=A8=E7=A4=BA=E5=B1=9E?=
 =?UTF-8?q?=E6=80=A7=E5=80=BCToString=E5=90=8E=E5=BF=85=E9=A1=BB=E5=8F=AF?=
 =?UTF-8?q?=E8=BD=AC=E6=8D=A2=E4=B8=BAInt?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../ModelValidation/IsIntAttribute.cs         | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Falcon.SugarApi/ModelValidation/IsIntAttribute.cs

diff --git a/Falcon.SugarApi/ModelValidation/IsIntAttribute.cs b/Falcon.SugarApi/ModelValidation/IsIntAttribute.cs
new file mode 100644
index 0000000..baf35fc
--- /dev/null
+++ b/Falcon.SugarApi/ModelValidation/IsIntAttribute.cs
@@ -0,0 +1,28 @@
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+
+namespace Falcon.SugarApi.ModelValidation
+{
+    /// <summary>
+    /// 必须可转换为整数
+    /// </summary>
+    public class IsIntAttribute : ValidationAttribute
+    {
+        /// <inheritdoc />
+        public override bool IsValid(object? value) {
+            if (value == null) {
+                return false;
+            }
+            return int.TryParse(value.ToString(), out int _);
+        }
+
+        /// <inheritdoc />
+        protected override ValidationResult? IsValid(object? value, ValidationContext validationContext) {
+            if (value == null) {
+                return new ValidationResult(ErrorMessage = "必须为整数");
+            }
+            return this.IsValid(value) ? null
+                : new ValidationResult(ErrorMessage = "必须为整数", new List<string>() { validationContext.MemberName });
+        }
+    }
+}