Fallback handling for list fields.

backend/src/Squidex.Domain.Apps.Core.Model/Schemas/FieldProperties.cs

@@ -5,12 +5,19 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using System;
 using System.Collections.ObjectModel;
 
 namespace Squidex.Domain.Apps.Core.Schemas
 {
     public abstract class FieldProperties : NamedElementPropertiesBase
     {
+        [Obsolete]
+        public bool IsListField { get; set; }
+
+        [Obsolete]
+        public bool IsReferenceField { get; set; }
+
         public bool IsRequired { get; set; }
 
         public string? Placeholder { get; set; }

backend/src/Squidex.Domain.Apps.Core.Model/Schemas/Json/JsonSchemaModel.cs

@@ -12,6 +12,8 @@ using Newtonsoft.Json;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Reflection;
 
+#pragma warning disable CS0612 // Type or member is obsolete
+
 namespace Squidex.Domain.Apps.Core.Schemas.Json
 {
     public sealed class JsonSchemaModel
@@ -106,11 +108,21 @@ namespace Squidex.Domain.Apps.Core.Schemas.Json
                 schema = schema.ConfigureScripts(Scripts);
             }
 
+            if (FieldsInLists == null)
+            {
+                FieldsInLists = new FieldNames(Fields.Where(x => x.Properties.IsListField).Select(x => x.Name).ToArray());
+            }
+
             if (FieldsInLists?.Count > 0)
             {
                 schema = schema.ConfigureFieldsInLists(FieldsInLists);
             }
 
+            if (FieldsInReferences == null)
+            {
+                FieldsInLists = new FieldNames(Fields.Where(x => x.Properties.IsReferenceField).Select(x => x.Name).ToArray());
+            }
+
             if (FieldsInReferences?.Count > 0)
             {
                 schema = schema.ConfigureFieldsInReferences(FieldsInReferences);