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src/Yavsc/AuthorizationHandlers/BlogEditHandler.cs

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+using Microsoft.AspNet.Authorization;
+using System.Security.Claims;
+using Yavsc.Models.Blog;
+
+namespace Yavsc.ViewModels.Auth.Handlers
+{
+    public class BlogEditHandler : AuthorizationHandler<EditRequirement, BlogPost>
+    {
+        protected override void Handle(AuthorizationContext context, EditRequirement requirement, BlogPost resource)
+        {
+            if (context.User.IsInRole(Constants.BlogModeratorGroupName))
+                context.Succeed(requirement);
+            else if (context.User.Identity.IsAuthenticated)
+            if (resource.AuthorId == context.User.GetUserId())
+                context.Succeed(requirement);
+        }
+
+    }
+}