User Localization settings

src/OrchardCore.Modules/OrchardCore.Users/Localization/Drivers/UserLocalizationDisplayDriver.cs

@@ -0,0 +1,68 @@
+using System.Globalization;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc.Rendering;
+using Microsoft.Extensions.Localization;
+using OrchardCore.DisplayManagement.Entities;
+using OrchardCore.DisplayManagement.Handlers;
+using OrchardCore.DisplayManagement.ModelBinding;
+using OrchardCore.DisplayManagement.Views;
+using OrchardCore.Localization;
+using OrchardCore.Users.Localization.Models;
+using OrchardCore.Users.Localization.ViewModels;
+using OrchardCore.Users.Models;
+
+namespace OrchardCore.Users.Localization.Drivers;
+
+public class UserLocalizationDisplayDriver : SectionDisplayDriver<User, UserLocalizationSettings>
+{
+    private readonly ILocalizationService _localizationService;
+    protected readonly IStringLocalizer S;
+
+    public UserLocalizationDisplayDriver(
+        ILocalizationService localizationService,
+        IStringLocalizer<UserLocalizationDisplayDriver> localizer)
+    {
+        _localizationService = localizationService;
+        S = localizer;
+    }
+
+    public override Task<IDisplayResult> EditAsync(UserLocalizationSettings section, BuildEditorContext context)
+    {
+        return Task.FromResult<IDisplayResult>(Initialize<UserLocalizationViewModel>("UserCulture_Edit", async model =>
+        {
+            var supportedCultures = await _localizationService.GetSupportedCulturesAsync();
+
+            var cultureList = supportedCultures.Select(culture =>
+                new SelectListItem
+                {
+                    Text = CultureInfo.GetCultureInfo(culture).DisplayName + " (" + culture + ")",
+                    Value = culture
+                }).ToList();
+
+            cultureList.Insert(0, new SelectListItem() { Text = S["Use site's culture"], Value = "none" });
+
+            // If Invariant Culture is installed as a supported culture we bind it to a different culture code than String.Empty.
+            var emptyCulture = cultureList.FirstOrDefault(c => c.Value == "");
+            if (emptyCulture != null)
+            {
+                emptyCulture.Value = UserLocalizationConstants.Invariant;
+            }
+
+            model.SelectedCulture = section.Culture;
+            model.CultureList = cultureList;
+        }).Location("Content:2"));
+    }
+
+    public override async Task<IDisplayResult> UpdateAsync(User model, UserLocalizationSettings section, IUpdateModel updater, BuildEditorContext context)
+    {
+        var viewModel = new UserLocalizationViewModel();
+
+        if (await context.Updater.TryUpdateModelAsync(viewModel, Prefix))
+        {
+            section.Culture = viewModel.SelectedCulture;
+        }
+
+        return await EditAsync(section, context);
+    }
+}

src/OrchardCore.Modules/OrchardCore.Users/Localization/Extensions/ClaimsPrincipleExtensions.cs

@@ -0,0 +1,9 @@
+using OrchardCore.Users.Localization.Providers;
+
+namespace System.Security.Claims;
+
+public static class ClaimsPrincipleExtensions
+{
+    public static string GetCulture(this ClaimsPrincipal principal)
+        => principal.FindFirstValue(UserLocalizationClaimsProvider.CultureClaimType);
+}

src/OrchardCore.Modules/OrchardCore.Users/Localization/Models/UserLocalizationSettings.cs

@@ -0,0 +1,9 @@
+namespace OrchardCore.Users.Localization.Models;
+
+/// <summary>
+/// Provides a model for the IEntity property.
+/// </summary>
+public class UserLocalizationSettings
+{
+    public string Culture { get; set; }
+}

src/OrchardCore.Modules/OrchardCore.Users/Localization/Providers/UserLocalizationClaimsProvider.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Security.Claims;
+using System.Threading.Tasks;
+using OrchardCore.Entities;
+using OrchardCore.Users.Localization.Models;
+using OrchardCore.Users.Models;
+using OrchardCore.Users.Services;
+
+namespace OrchardCore.Users.Localization.Providers;
+
+public class UserLocalizationClaimsProvider : IUserClaimsProvider
+{
+    internal const string CultureClaimType = "culture";
+
+    public Task GenerateAsync(IUser user, ClaimsIdentity claims)
+    {
+        ArgumentNullException.ThrowIfNull(user);
+        ArgumentNullException.ThrowIfNull(claims);
+
+        if (user is not User currentUser)
+        {
+            return Task.CompletedTask;
+        }
+
+        if (currentUser.Has<UserLocalizationSettings>())
+        {
+            var localizationSetting = currentUser.As<UserLocalizationSettings>();
+
+            if (localizationSetting.Culture != "none")
+            {
+                claims.AddClaim(new Claim(CultureClaimType, localizationSetting.Culture == UserLocalizationConstants.Invariant ? "" : localizationSetting.Culture));
+            }
+        }
+
+        return Task.CompletedTask;
+    }
+}

src/OrchardCore.Modules/OrchardCore.Users/Localization/Providers/UserLocalizationRequestCultureProvider.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Security.Claims;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Localization;
+
+namespace OrchardCore.Users.Localization.Providers;
+
+public class UserLocalizationRequestCultureProvider : RequestCultureProvider
+{
+    public override Task<ProviderCultureResult> DetermineProviderCultureResult(HttpContext httpContext)
+    {
+        ArgumentNullException.ThrowIfNull(httpContext);
+
+        if (httpContext?.User?.Identity?.IsAuthenticated == false)
+        {
+            return NullProviderCultureResult;
+        }
+
+        var userCulture = httpContext.User.GetCulture(); // String.Empty here means that it did not find the Culture Claim.
+
+        if (String.IsNullOrWhiteSpace(userCulture))
+        {
+            return NullProviderCultureResult;
+        }
+
+        return Task.FromResult(new ProviderCultureResult(userCulture == UserLocalizationConstants.Invariant ? "" : userCulture));
+    }
+}

src/OrchardCore.Modules/OrchardCore.Users/Localization/Startup.cs

@@ -0,0 +1,23 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.DependencyInjection;
+using OrchardCore.DisplayManagement.Handlers;
+using OrchardCore.Modules;
+using OrchardCore.Users.Localization.Drivers;
+using OrchardCore.Users.Localization.Providers;
+using OrchardCore.Users.Models;
+using OrchardCore.Users.Services;
+
+namespace OrchardCore.Users.Localization;
+
+[Feature("OrchardCore.Users.Localization")]
+public class Startup : StartupBase
+{
+    public override void ConfigureServices(IServiceCollection services)
+    {
+        services.AddScoped<IDisplayDriver<User>, UserLocalizationDisplayDriver>();
+        services.AddScoped<IUserClaimsProvider, UserLocalizationClaimsProvider>();
+
+        services.Configure<RequestLocalizationOptions>(options =>
+            options.AddInitialRequestCultureProvider(new UserLocalizationRequestCultureProvider()));
+    }
+}

src/OrchardCore.Modules/OrchardCore.Users/Localization/UserLocalizationConstants.cs

@@ -0,0 +1,7 @@
+namespace OrchardCore.Users.Localization
+{
+    public static class UserLocalizationConstants
+    {
+        public const string Invariant = "invariant";
+    }
+}

src/OrchardCore.Modules/OrchardCore.Users/Localization/ViewModel/UserLocalizationViewModel.cs

@@ -0,0 +1,13 @@
+using System.Collections.Generic;
+using Microsoft.AspNetCore.Mvc.ModelBinding;
+using Microsoft.AspNetCore.Mvc.Rendering;
+
+namespace OrchardCore.Users.Localization.ViewModels;
+
+public class UserLocalizationViewModel
+{
+    public string SelectedCulture { get; set; }
+
+    [BindNever]
+    public List<SelectListItem> CultureList { get; set; } = [];
+}

src/OrchardCore.Modules/OrchardCore.Users/Manifest.cs

@@ -56,6 +56,15 @@
     Category = "Settings"
 )]
 
+[assembly: Feature(
+    Id = "OrchardCore.Users.Localization",
+    Name = "User Localization",
+    Description = "Provides a way to set the culture per user.",
+    Dependencies = new[] { "OrchardCore.Users", "OrchardCore.Localization" },
+    Category = "Settings",
+    Priority = "-1" // Added to avoid changing the order in the localization module.
+)]
+
 [assembly: Feature(
     Id = "OrchardCore.Users.CustomUserSettings",
     Name = "Custom User Settings",

src/OrchardCore.Modules/OrchardCore.Users/Views/UserCulture.Edit.cshtml

@@ -0,0 +1,10 @@
+@using OrchardCore.Users.Localization.ViewModels
+@model UserLocalizationViewModel
+
+<div class="mb-3" asp-validation-class-for="SelectedCulture">
+    <label asp-for="SelectedCulture">@T["Default User Culture"]</label>
+    <select asp-for="SelectedCulture" asp-items="Model.CultureList" class="form-select">
+    </select>
+    <span asp-validation-for="SelectedCulture"></span>
+    <span class="hint">@T["Determines the default culture used by this user."]</span>
+</div>

src/OrchardCore/OrchardCore/Modules/Extensions/ServiceCollectionExtensions.cs

@@ -517,7 +517,7 @@ private static void AddAuthentication(OrchardCoreBuilder builder)
             .Configure(app =>
             {
                 app.UseAuthentication();
-            });
+            }, order: -150);
         }
 
         /// <summary>

src/docs/reference/modules/Users/README.md

@@ -15,11 +15,18 @@ The module contains the following features apart from the base feature:
 - Two-Factor Authentication Services: Provices Two-factor core services. This feature cannot be manually enabled or disable as it is enabled by dependency on demand.
 - Two-Factor Email Method: Allows users to two-factor authenticate using an email.
 - Two-Factor Authenticator App Method: Allows users to two-factor authenticate using any Authenticator App.
+- User Localization: Allows ability to configure user culture per user from admin UI.
 
 ## Two-factor Authentication
 
 Starting with version 1.7, OrchardCore is shipped with everything you need to secure your app with two-factor authentication. To use two-factor authentication, simply enable "Two-Factor Email Method" and/or "Two-Factor Authenticator App Method" features. You can configure the process based on your need by navigating to `Security` >> `Settings` >> `User Login`. Click on the "Two-Factor Authentication" tab and update the settings as needed.
 
+## User Localization
+
+The feature adds the ability to configure the culture per user from the admin UI.
+
+This feature adds a `RequestCultureProvider` to retrieve the current user culture from its claims. This feature will set a new user claim with a `CultureClaimType` named "culture". It also has a culture option to fall back to other ASP.NET Request Culture Providers by simply setting the user culture to "Use site's culture" which will also be the selected default value.
+
 ## Custom Paths
 
 If you want to specify custom paths to access the authentication related urls, you can change them by using this option in the appsettings.json:

src/docs/releases/1.9.0.md

@@ -171,3 +171,8 @@ public class PersonController : Controller
 ```
 
 In this example, (if the admin prefix remains the default "Admin") you can reach the Index action at `~/Admin/Person` (or by the route name `Person`), because its own action-level attribute took precedence. You can reach Create at `~/Admin/Person/Create` (route name `PersonCreate`) and Edit for the person whose identifier string is "john-doe" at `~/Admin/Person/john-doe` (route name `PersonEdit`).
+
+## Users Module
+
+Added a new User Localization feature that allows to be able to configure the culture per user from the admin UI.
+