LocalizableStringSerializer should support external localization resources.

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/CachedObjectExtensionsDtoService.cs

@@ -204,9 +204,7 @@ public class CachedObjectExtensionsDtoService : ICachedObjectExtensionsDtoServic
         {
             return new LocalizableStringDto(
                 localizableStringInstance.Name,
-                localizableStringInstance.ResourceType != null
-                    ? LocalizationResourceNameAttribute.GetName(localizableStringInstance.ResourceType)
-                    : null
+                localizableStringInstance.ResourceName
             );
         }
 

framework/src/Volo.Abp.Localization.Abstractions/Volo/Abp/Localization/LocalizableString.cs

@@ -38,7 +38,7 @@ public class LocalizableString : ILocalizableString, IAsyncLocalizableString
         var localizer = CreateStringLocalizerOrNull(stringLocalizerFactory);
         if (localizer == null)
         {
-            throw new AbpException($"Set {nameof(ResourceName)} or configure the default localization resource type (in the AbpLocalizationOptions)!");
+            return new LocalizedString(Name, Name, resourceNotFound: true);
         }
         
         var result = localizer[Name];

framework/src/Volo.Abp.Localization/Volo/Abp/Localization/LocalizableStringSerializer.cs

@@ -17,7 +17,7 @@ public class LocalizableStringSerializer : ILocalizableStringSerializer, ITransi
     {
         if (localizableString is LocalizableString realLocalizableString)
         {
-            return $"L:{LocalizationResourceNameAttribute.GetName(realLocalizableString.ResourceType)},{realLocalizableString.Name}";
+            return $"L:{realLocalizableString.ResourceName},{realLocalizableString.Name}";
         }
 
         if (localizableString is FixedLocalizableString fixedLocalizableString)
@@ -56,11 +56,6 @@ public class LocalizableStringSerializer : ILocalizableStringSerializer, ITransi
                     throw new AbpException("Invalid LocalizableString value: " + value);
                 }
 
-                if (!LocalizationOptions.Resources.ContainsKey(resourceName))
-                {
-                    resourceName = null;
-                }
-                
                 return LocalizableString.Create(name, resourceName);
             default:
                 return new FixedLocalizableString(value);