Add useCurrentCultureIfCultureNameIsNull option.

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

@@ -8,13 +8,15 @@ namespace Volo.Abp.TextTemplating
         Task<string> GetContentOrNullAsync(
             [NotNull] string templateName,
             [CanBeNull] string cultureName = null,
-            bool tryDefaults = true
+            bool tryDefaults = true,
+            bool useCurrentCultureIfCultureNameIsNull = true
         );
 
         Task<string> GetContentOrNullAsync(
             [NotNull] TemplateDefinition templateDefinition,
             [CanBeNull] string cultureName = null,
-            bool tryDefaults = true
+            bool tryDefaults = true,
+            bool useCurrentCultureIfCultureNameIsNull = true
         );
     }
 }

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

@@ -1,4 +1,5 @@
-using System.Globalization;
+using System;
+using System.Globalization;
 using System.Linq;
 using System.Threading.Tasks;
 using JetBrains.Annotations;
@@ -26,9 +27,10 @@ namespace Volo.Abp.TextTemplating
         }
 
         public virtual Task<string> GetContentOrNullAsync(
-            [NotNull] string templateName, 
+            [NotNull] string templateName,
             [CanBeNull] string cultureName = null,
-            bool tryDefaults = true)
+            bool tryDefaults = true,
+            bool useCurrentCultureIfCultureNameIsNull = true)
         {
             var template = _templateDefinitionManager.Get(templateName);
             return GetContentOrNullAsync(template, cultureName);
@@ -37,7 +39,8 @@ namespace Volo.Abp.TextTemplating
         public virtual async Task<string> GetContentOrNullAsync(
             [NotNull] TemplateDefinition templateDefinition,
             [CanBeNull] string cultureName = null,
-            bool tryDefaults = true)
+            bool tryDefaults = true,
+            bool useCurrentCultureIfCultureNameIsNull = true)
         {
             Check.NotNull(templateDefinition, nameof(templateDefinition));
 
@@ -47,64 +50,50 @@ namespace Volo.Abp.TextTemplating
                     $"No template content contributor was registered. Use {nameof(AbpTextTemplatingOptions)} to register contributors!"
                 );
             }
-            
+
             using (var scope = ServiceScopeFactory.CreateScope())
             {
-                var searchCultureName = cultureName ??
-                                        CultureInfo.CurrentUICulture.Name;
-
-                var contributors = Options.ContentContributors
-                    .Select(type => (ITemplateContentContributor) scope.ServiceProvider.GetRequiredService(type))
-                    .Reverse()
-                    .ToArray();
-
-                //Try to get from the requested culture
-                var templateString = await GetContentOrNullAsync(
-                    contributors,
-                    new TemplateContentContributorContext(
-                        templateDefinition,
-                        scope.ServiceProvider,
-                        searchCultureName
-                    )
-                );
+                string templateString = null;
 
-                if (templateString != null)
+                if (cultureName == null && useCurrentCultureIfCultureNameIsNull)
                 {
-                    return templateString;
+                    cultureName = CultureInfo.CurrentUICulture.Name;
                 }
 
-                if (!tryDefaults)
+                var contributors = CreateTemplateContentContributors(scope.ServiceProvider);
+
+                //Try to get from the requested culture
+                if (cultureName != null)
                 {
-                    if (templateDefinition.IsInlineLocalized && cultureName == null)
-                    {
-                        //Try to get culture independent content
-                        templateString = await GetContentOrNullAsync(
-                            contributors,
-                            new TemplateContentContributorContext(
-                                templateDefinition,
-                                scope.ServiceProvider,
-                                null
-                            )
-                        );
+                    templateString = await GetContentOrNullAsync(
+                        contributors,
+                        new TemplateContentContributorContext(
+                            templateDefinition,
+                            scope.ServiceProvider,
+                            cultureName
+                        )
+                    );
 
-                        if (templateString != null)
-                        {
-                            return templateString;
-                        }
+                    if (templateString != null)
+                    {
+                        return templateString;
                     }
+                }
 
+                if (!tryDefaults)
+                {
                     return null;
                 }
 
                 //Try to get from same culture without country code
-                if (searchCultureName.Contains("-")) //Example: "tr-TR"
+                if (cultureName != null && cultureName.Contains("-")) //Example: "tr-TR"
                 {
                     templateString = await GetContentOrNullAsync(
                         contributors,
                         new TemplateContentContributorContext(
                             templateDefinition,
                             scope.ServiceProvider,
-                            CultureHelper.GetBaseCultureName(searchCultureName)
+                            CultureHelper.GetBaseCultureName(cultureName)
                         )
                     );
 
@@ -113,7 +102,7 @@ namespace Volo.Abp.TextTemplating
                         return templateString;
                     }
                 }
-                
+
                 if (templateDefinition.IsInlineLocalized)
                 {
                     //Try to get culture independent content
@@ -157,6 +146,14 @@ namespace Volo.Abp.TextTemplating
             return null;
         }
 
+        protected virtual ITemplateContentContributor[] CreateTemplateContentContributors(IServiceProvider serviceProvider)
+        {
+            return Options.ContentContributors
+                .Select(type => (ITemplateContentContributor)serviceProvider.GetRequiredService(type))
+                .Reverse()
+                .ToArray();
+        }
+
         protected virtual async Task<string> GetContentOrNullAsync(
             ITemplateContentContributor[] contributors,
             TemplateContentContributorContext context)