Fixed user input data validation upon registration

1 files changed, 20 insertions, 0 deletions

diff --git a/src/DevHive.Web/Models/Identity/Validation/OnlyLettersModelValidation.cs b/src/DevHive.Web/Models/Identity/Validation/OnlyLettersModelValidation.cs
new file mode 100644
index 0000000..29a995a
--- /dev/null
+++ b/src/DevHive.Web/Models/Identity/Validation/OnlyLettersModelValidation.cs
@@ -0,0 +1,20 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+
+namespace DevHive.Web.Models.Identity.Validation
+{
+	public class OnlyLetters : ValidationAttribute
+	{
+		public override bool IsValid(object value)
+		{
+			var stringValue = (string)value;
+
+			foreach (char ch in stringValue)
+			{
+				if (!Char.IsLetter(ch))
+					return false;
+			}
+			return true;
+		}
+	}
+}