Flag to not resolve languages.

backend/src/Squidex.Domain.Apps.Entities/Contents/ContextExtensions.cs

@@ -19,6 +19,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
         private const string HeaderLanguages = "X-Languages";
         private const string HeaderResolveFlow = "X-ResolveFlow";
         private const string HeaderResolveAssetUrls = "X-Resolve-Urls";
+        private const string HeaderNoResolveLanguage = "X-NoResolveLanguage";
         private const string HeaderNoEnrichment = "X-NoEnrichment";
         private static readonly char[] Separators = { ',', ';' };
 
@@ -98,6 +99,25 @@ namespace Squidex.Domain.Apps.Entities.Contents
             return context;
         }
 
+        public static bool IsNoResolveLanguage(this Context context)
+        {
+            return context.Headers.ContainsKey(HeaderNoResolveLanguage);
+        }
+
+        public static Context WithNoResolveLanguage(this Context context, bool value = true)
+        {
+            if (value)
+            {
+                context.Headers[HeaderNoResolveLanguage] = "1";
+            }
+            else
+            {
+                context.Headers.Remove(HeaderNoResolveLanguage);
+            }
+
+            return context;
+        }
+
         public static IEnumerable<string> AssetUrls(this Context context)
         {
             if (context.Headers.TryGetValue(HeaderResolveAssetUrls, out var value))

backend/src/Squidex.Domain.Apps.Entities/Contents/Queries/ContentQueryService.cs

@@ -224,7 +224,10 @@ namespace Squidex.Domain.Apps.Entities.Contents.Queries
 
             if (!context.IsFrontendClient)
             {
-                yield return FieldConverters.ResolveFallbackLanguages(context.App.LanguagesConfig);
+                if (!context.IsNoResolveLanguage())
+                {
+                    yield return FieldConverters.ResolveFallbackLanguages(context.App.LanguagesConfig);
+                }
 
                 var languages = context.Languages();