Init

Prefab/Culture/CultureController.cs

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+using Microsoft.AspNetCore.Localization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Prefab.Culture;
+
+/// <summary>
+/// Controller for setting the culture.
+/// </summary>
+[Route("[controller]/[action]")]
+public class CultureController : Controller
+{
+    /// <summary>
+    /// Set the culture and redirect to the specified URL.
+    /// </summary>
+    /// <param name="culture"></param>
+    /// <param name="redirectUri"></param>
+    /// <returns>LocalRedirect ActionResult</returns>
+    /// <remarks>
+    /// Use LocalRedirect action result to prevent open redirect attacks.
+    /// For more information <see href="https://learn.microsoft.com/en-us/aspnet/core/security/preventing-open-redirects?view=aspnetcore-9.0">Prevent open redirect attacks in ASP.NET Core</see>
+    /// </remarks>
+    public IActionResult Set(string? culture, string redirectUri)
+    {
+        if (culture != null)
+        {
+            HttpContext.Response.Cookies.Append(
+                CookieRequestCultureProvider.DefaultCookieName,
+                CookieRequestCultureProvider.MakeCookieValue(
+                    new RequestCulture(culture, culture)));
+        }
+
+        return LocalRedirect(redirectUri);
+    }
+}