Simplify fluid usage.

backend/src/Squidex.Domain.Apps.Core.Operations/Templates/Extensions/UserFluidExtension.cs

@@ -5,6 +5,8 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using System;
+using System.Linq;
 using Fluid;
 using Fluid.Values;
 using Squidex.Shared.Users;
@@ -15,7 +17,29 @@ namespace Squidex.Domain.Apps.Core.Templates.Extensions
     {
         public void RegisterGlobalTypes(IMemberAccessStrategy memberAccessStrategy)
         {
-            FluidValue.SetTypeMapping<IUser>(x => new UserFluidValue(x));
+            memberAccessStrategy.Register<IUser, FluidValue>((user, name) =>
+            {
+                switch (name)
+                {
+                    case "id":
+                        return new StringValue(user.Id);
+                    case "email":
+                        return new StringValue(user.Email);
+                    case "name":
+                        return new StringValue(user.DisplayName());
+                    default:
+                        {
+                            var claim = user.Claims.FirstOrDefault(x => string.Equals(name, x.Type, StringComparison.OrdinalIgnoreCase));
+
+                            if (claim != null)
+                            {
+                                return new StringValue(claim.Value);
+                            }
+
+                            return NilValue.Instance;
+                        }
+                }
+            });
         }
     }
 }

backend/src/Squidex.Domain.Apps.Core.Operations/Templates/Extensions/UserFluidValue.cs

@@ -1,75 +0,0 @@
-// ==========================================================================
-//  Squidex Headless CMS
-// ==========================================================================
-//  Copyright (c) Squidex UG (haftungsbeschraenkt)
-//  All rights reserved. Licensed under the MIT license.
-// ==========================================================================
-
-using System;
-using System.Globalization;
-using System.IO;
-using System.Linq;
-using System.Text.Encodings.Web;
-using Fluid;
-using Fluid.Values;
-using Squidex.Shared.Users;
-
-namespace Squidex.Domain.Apps.Core.Templates.Extensions
-{
-    public sealed class UserFluidValue : FluidValue
-    {
-        private readonly IUser value;
-
-        public override FluidValues Type { get; } = FluidValues.Object;
-
-        public UserFluidValue(IUser value)
-        {
-            this.value = value;
-        }
-
-        protected override FluidValue GetValue(string name, TemplateContext context)
-        {
-            switch (name)
-            {
-                case "id":
-                    return Create(value.Id);
-                case "email":
-                    return Create(value.Email);
-                case "name":
-                    return Create(value.DisplayName());
-                default:
-                    return Create(value.Claims.FirstOrDefault(x => string.Equals(name, x.Type, StringComparison.OrdinalIgnoreCase))?.Value);
-            }
-        }
-
-        public override bool Equals(FluidValue other)
-        {
-            return other is UserFluidValue user && user.value.Id == value.Id;
-        }
-
-        public override bool ToBooleanValue()
-        {
-            return true;
-        }
-
-        public override decimal ToNumberValue()
-        {
-            return 0;
-        }
-
-        public override object ToObjectValue()
-        {
-            return new UserFluidValue(value);
-        }
-
-        public override string ToStringValue()
-        {
-            return value.Id;
-        }
-
-        public override void WriteTo(TextWriter writer, TextEncoder encoder, CultureInfo cultureInfo)
-        {
-            writer.Write(value.Id);
-        }
-    }
-}