Use default localization resource. Introduce IHasNameWithLocalizableDisplayName.

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/AbpAspNetCoreMvcModule.cs

@@ -18,6 +18,7 @@ using Microsoft.AspNetCore.Mvc.Razor;
 using Microsoft.AspNetCore.Mvc.RazorPages;
 using Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure;
 using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Localization;
 using Volo.Abp.ApiVersioning;
 using Volo.Abp.AspNetCore.Mvc.ApiExploring;
 using Volo.Abp.AspNetCore.Mvc.Conventions;
@@ -114,8 +115,17 @@ namespace Volo.Abp.AspNetCore.Mvc
                 {
                     options.DataAnnotationLocalizerProvider = (type, factory) =>
                     {
-                        var resourceType = abpMvcDataAnnotationsLocalizationOptions.AssemblyResources.GetOrDefault(type.Assembly);
-                        return factory.Create(resourceType ?? type);
+                        var resourceType = abpMvcDataAnnotationsLocalizationOptions
+                            .AssemblyResources
+                            .GetOrDefault(type.Assembly);
+
+                        if (resourceType != null)
+                        {
+                            return factory.Create(resourceType);
+                        }
+
+                        return factory.CreateDefaultOrNull() ?? 
+                               factory.Create(type);
                     };
                 })                
                 .AddViewLocalization(); //TODO: How to configure from the application? Also, consider to move to a UI module since APIs does not care about it.

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/AbpApplicationConfigurationAppService.cs

@@ -76,7 +76,7 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations
             };
         }
 
-        protected  virtual  CurrentTenantDto GetCurrentTenant()
+        protected virtual CurrentTenantDto GetCurrentTenant()
         {
             return new CurrentTenantDto()
             {
@@ -157,9 +157,13 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations
             }
 
             localizationConfig.CurrentCulture = GetCurrentCultureInfo();
-            localizationConfig.DefaultResourceName = LocalizationResourceNameAttribute.GetName(
-                _localizationOptions.DefaultResourceType
-            );
+
+            if (_localizationOptions.DefaultResourceType != null)
+            {
+                localizationConfig.DefaultResourceName = LocalizationResourceNameAttribute.GetName(
+                    _localizationOptions.DefaultResourceType
+                );
+            }
 
             Logger.LogDebug("Executed AbpApplicationConfigurationAppService.GetLocalizationConfigAsync()");
 

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ViewFeatures/AbpValidationHtmlAttributeProvider.cs

@@ -1,6 +1,5 @@
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
-using System.Linq;
 using System.Reflection;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.DataAnnotations;
@@ -14,6 +13,7 @@ using Microsoft.Extensions.Options;
 using Volo.Abp.AspNetCore.Mvc.ModelBinding;
 using Volo.Abp.AspNetCore.Mvc.Validation;
 using Volo.Abp.DependencyInjection;
+using Volo.Abp.Localization;
 using Volo.Abp.ObjectExtending;
 using Volo.Abp.Validation.Localization;
 
@@ -103,7 +103,7 @@ namespace Volo.Abp.AspNetCore.Mvc.ViewFeatures
             if (modelExplorer.Metadata is DefaultModelMetadata metadata)
             {
                 metadata.DisplayMetadata.DisplayName =
-                    () => extensionPropertyInfo.GetDisplayName(_stringLocalizerFactory);
+                    () => extensionPropertyInfo.GetLocalizedDisplayName(_stringLocalizerFactory);
             }
 
             foreach (var validationAttribute in extensionPropertyInfo.GetValidationAttributes())

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

@@ -0,0 +1,36 @@
+using System;
+using JetBrains.Annotations;
+using Microsoft.Extensions.Localization;
+
+namespace Volo.Abp.Localization
+{
+    public static class HasNameWithLocalizableDisplayNameExtensions
+    {
+        [NotNull]
+        public static string GetLocalizedDisplayName(
+            [NotNull] this IHasNameWithLocalizableDisplayName source,
+            [NotNull] IStringLocalizerFactory stringLocalizerFactory,
+            [CanBeNull] string localizationNamePrefix = "DisplayName:")
+        {
+            if (source.DisplayName != null)
+            {
+                return source.DisplayName.Localize(stringLocalizerFactory);
+            }
+
+            var defaultStringLocalizer = stringLocalizerFactory.CreateDefaultOrNull();
+            if (defaultStringLocalizer == null)
+            {
+                return source.Name;
+            }
+
+            var localizedString = defaultStringLocalizer[$"{localizationNamePrefix}{source.Name}"];
+            if (!localizedString.ResourceNotFound || 
+                localizationNamePrefix.IsNullOrEmpty())
+            {
+                return localizedString;
+            }
+
+            return defaultStringLocalizer[source.Name];
+        }
+    }
+}

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

@@ -0,0 +1,13 @@
+using JetBrains.Annotations;
+
+namespace Volo.Abp.Localization
+{
+    public interface IHasNameWithLocalizableDisplayName
+    {
+        [NotNull]
+        public string Name { get; }
+
+        [CanBeNull]
+        public ILocalizableString DisplayName { get; }
+    }
+}

framework/src/Volo.Abp.ObjectExtending/Volo/Abp/ObjectExtending/ObjectExtensionPropertyInfo.cs

@@ -7,7 +7,7 @@ using Volo.Abp.Localization;
 
 namespace Volo.Abp.ObjectExtending
 {
-    public class ObjectExtensionPropertyInfo
+    public class ObjectExtensionPropertyInfo : IHasNameWithLocalizableDisplayName
     {
         [NotNull]
         public ObjectExtensionInfo ObjectExtension { get; }
@@ -62,35 +62,5 @@ namespace Volo.Abp.ObjectExtending
             Attributes = new List<Attribute>();
             Validators = new List<Action<ObjectExtensionPropertyValidationContext>>();
         }
-        
-        [NotNull]
-        public string GetDisplayName(
-            [NotNull] IStringLocalizerFactory stringLocalizerFactory)
-        {
-            if (DisplayName != null)
-            {
-                return DisplayName.Localize(stringLocalizerFactory);
-            }
-
-            var defaultStringLocalizer = stringLocalizerFactory.CreateDefaultOrNull();
-            if (defaultStringLocalizer == null)
-            {
-                return Name;
-            }
-
-            var localizedString = defaultStringLocalizer[$"DisplayName:{Name}"];
-            if (!localizedString.ResourceNotFound)
-            {
-                return localizedString;
-            }
-
-            localizedString = defaultStringLocalizer[Name];
-            if (!localizedString.ResourceNotFound)
-            {
-                return localizedString;
-            }
-
-            return Name;
-        }
     }
 }

framework/src/Volo.Abp.TextTemplating/Volo/Abp/TextTemplating/TemplateDefinition.cs

@@ -5,7 +5,7 @@ using Volo.Abp.Localization;
 
 namespace Volo.Abp.TextTemplating
 {
-    public class TemplateDefinition
+    public class TemplateDefinition : IHasNameWithLocalizableDisplayName
     {
         public const int MaxNameLength = 128;
 

framework/src/Volo.Abp.TextTemplating/Volo/Abp/TextTemplating/TemplateRenderer.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 using JetBrains.Annotations;
 using Microsoft.Extensions.Localization;
+using Microsoft.Extensions.Options;
 using Scriban;
 using Scriban.Runtime;
 using Volo.Abp.DependencyInjection;
@@ -136,9 +137,9 @@ namespace Volo.Abp.TextTemplating
                 scriptObject["model"] = model;
             }
 
-            if (templateDefinition.LocalizationResource != null)
+            var localizer = GetLocalizerOrNull(templateDefinition);
+            if (localizer != null)
             {
-                var localizer = _stringLocalizerFactory.Create(templateDefinition.LocalizationResource);
                 scriptObject.Import(
                     "L",
                     new Func<string, string>(
@@ -151,5 +152,15 @@ namespace Volo.Abp.TextTemplating
 
             return context;
         }
+
+        private IStringLocalizer GetLocalizerOrNull(TemplateDefinition templateDefinition)
+        {
+            if (templateDefinition.LocalizationResource != null)
+            {
+                return _stringLocalizerFactory.Create(templateDefinition.LocalizationResource);
+            }
+
+            return _stringLocalizerFactory.CreateDefaultOrNull();
+        }
     }
 }