public override RouteData GetRouteData(HttpContextBase context)
{
var result = _route.GetRouteData(context);
if (result == null)
{
var url = _session.GetUrlFromRequest(context.Request);
var languages = context.Request.UserLanguages ?? new[] { I18N.DefaultTwoLetterISOLanguageName };
foreach (var language in languages.Where(language => !string.IsNullOrWhiteSpace(language)))
{
var semiColonIndex = language.IndexOf(';');
var token = string.Format("/{0}", semiColonIndex > -1 ? language.Substring(0, semiColonIndex) : language);
if (!url.EndsWithAnyIgnoreCase(token, token + "/"))
{
continue;
}
url = url.TrimEnd(token.Substring(1).ToCharArray());
var originalRequest = new ClonedHttpRequest(context.Request, url);
var originalContext = new ClonedHttpContext(context, originalRequest);
result = _route.GetRouteData(originalContext);
if (result != null)
{
// Found the original non-decorated route
return(result);
}
}
}
return(result);
}
/// <summary>
/// Called before an action method executes.
/// </summary>
/// <param name="filterContext">The filter context.</param>
public void OnActionExecuting(ActionExecutingContext filterContext)
{
var request = filterContext.HttpContext.Request;
var values = filterContext.RouteData.Values;
// Value is already injected from a route declaration
if (values.ContainsKey("language"))
{
return;
}
// Value is part of the explicit route and is the preferred language (from those available)
var preferred = _session.GetLanguageFromSessionOrService(filterContext.HttpContext);
var url = _session.GetUrlFromRequest(filterContext.HttpContext.Request);
if (url.EndsWithAnyIgnoreCase(string.Format("/{0}", preferred), string.Format("/{0}/", preferred)))
{
return;
}
// Value is loose in the query string, i.e. '/?language=en'
if (request.QueryString["language"] != null)
{
_session.Set(filterContext.HttpContext, request.QueryString["language"]);
preferred = _session.GetLanguageFromSessionOrService(filterContext.HttpContext);
}
// Value is part of the explicit route, i.e. '/about/en' but not the preferred language
var languages = request.UserLanguages ?? new[] { I18N.DefaultTwoLetterISOLanguageName };
foreach (var language in languages.Where(language => !string.IsNullOrWhiteSpace(language)))
{
var semiColonIndex = language.IndexOf(';');
var token = string.Format("/{0}", semiColonIndex > -1 ? language.Substring(0, semiColonIndex) : language);
if (!url.EndsWithAnyIgnoreCase(token, string.Format("{0}/", token)))
{
continue;
}
// This is an explicit language request, override preferences
_session.Set(filterContext.HttpContext, token.Substring(1));
preferred = _session.GetLanguageFromSessionOrService(filterContext.HttpContext);
}
RedirectWithLanguage(filterContext, values, preferred);
}