fix language change problem

Author: ismcagdas

src/AbpCompanyName.AbpProjectName.Web/Controllers/LocalizationController.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Globalization;
+using System.Linq;
+using Abp;
+using Abp.AspNetCore.Mvc.Controllers;
+using Abp.AspNetCore.Mvc.Extensions;
+using Abp.Auditing;
+using Abp.Extensions;
+using Abp.Timing;
+using Abp.Web.Models;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Localization;
+using Microsoft.AspNetCore.Mvc;
+using IUrlHelper = Abp.Web.Http.IUrlHelper;
+
+namespace AbpCompanyName.AbpProjectName.Web.Controllers
+{
+    public class LocalizationController : AbpController
+    {
+        private readonly IUrlHelper _urlHelper;
+
+        public LocalizationController(IUrlHelper urlHelper)
+        {
+            _urlHelper = urlHelper;
+        }
+
+        [DisableAuditing]
+        public virtual ActionResult ChangeCulture(string cultureName, string returnUrl = "")
+        {
+            if (!IsValidCultureCode(cultureName))
+            {
+                throw new AbpException("Unknown language: " + cultureName + ". It must be a valid culture!");
+            }
+
+            var cookieValue = CookieRequestCultureProvider.MakeCookieValue(
+                new RequestCulture(cultureName, cultureName)
+            );
+
+            Response.Cookies.Append(
+                CookieRequestCultureProvider.DefaultCookieName,
+                cookieValue,
+                new CookieOptions
+                {
+                    Expires = Clock.Now.AddYears(2),
+                    HttpOnly = true
+                }
+            );
+
+            if (Request.IsAjaxRequest())
+            {
+                return Json(new AjaxResponse());
+            }
+
+            if (string.IsNullOrWhiteSpace(returnUrl))
+            {
+                return LocalRedirect("/");
+            }
+            
+            var escapedReturnUrl = Uri.EscapeDataString(returnUrl);
+            var localPath = _urlHelper.LocalPathAndQuery(escapedReturnUrl, Request.Host.Host, Request.Host.Port);
+            if (!string.IsNullOrWhiteSpace(localPath))
+            {
+                var unescapedLocalPath = Uri.UnescapeDataString(localPath);
+                if (Url.IsLocalUrl(unescapedLocalPath))
+                {
+                    return LocalRedirect(unescapedLocalPath);
+                }
+            }
+
+            return LocalRedirect("/");
+        }
+
+        private static bool IsValidCultureCode(string cultureCode)
+        {
+            if (cultureCode.IsNullOrWhiteSpace())
+            {
+                return false;
+            }
+
+            try
+            {
+                return CultureInfo.GetCultures(CultureTypes.AllCultures)
+                    .Any(e => e.Name.ToLowerInvariant() == cultureCode.ToLowerInvariant());
+            }
+            catch (CultureNotFoundException)
+            {
+                return false;
+            }
+        }
+    }
+}

src/AbpCompanyName.AbpProjectName.Web/Views/Shared/Components/LanguageSelection/Default.cshtml

@@ -10,7 +10,7 @@
         {
             if (language.Name != Model.CurrentLanguage.Name)
             {
-                <li><a href="@Url.Action("ChangeCulture", "AbpLocalization")?cultureName=@(language.Name)&returnUrl=@(Model.CurrentUrl)"><div class="@language.Icon"></div> @language.DisplayName</a></li>
+                <li><a href="@Url.Action("ChangeCulture", "Localization")?cultureName=@(language.Name)&returnUrl=@(Model.CurrentUrl)"><div class="@language.Icon"></div> @language.DisplayName</a></li>
             }
         }
     </ul>