google hreflang tag and bing content-language

As google search console requests a hreflang tag I've modified _Root.Head.cshtml in the following way.
You can use it as a starting point. Maybe there are better ways.

add first the following references
@using Nop.Core.Domain.Localization;
@using System.Text;
@using Nop.Services.Seo;

...
then add the following code after

//custom tag(s)
    var seoSettings = EngineContext.Current.Resolve<SeoSettings>();
    if (!string.IsNullOrEmpty(seoSettings.CustomHeadTags))
    {
        Html.AppendHeadCustomParts(seoSettings.CustomHeadTags);
    }

add this code

    //Hhreflang and Bing content-language tags
    RouteData data = Request.RequestContext.RouteData;
    if (data != null)
    {
        var languageService = EngineContext.Current.Resolve<Nop.Services.Localization.ILanguageService>();
        var storeContext = EngineContext.Current.Resolve<Nop.Core.IStoreContext>();
        var urlRecordService = EngineContext.Current.Resolve<IUrlRecordService>();
        var workContext = EngineContext.Current.Resolve<Nop.Core.IWorkContext>();
        var slug = data.Values["generic_se_name"] as string;
        var urlRecord = urlRecordService.GetBySlugCached(slug);
        string pageURL = "";
        var result = new StringBuilder();


        //bing lang
        result.AppendFormat("<meta http-equiv=\"content-language\" content=\"{0}\" >", workContext.WorkingLanguage.LanguageCulture.ToLower());
        result.Append(Environment.NewLine);

        //base URL
        if (urlRecord != null)
        {
            pageURL = urlRecordService.GetActiveSlug(urlRecord.EntityId, urlRecord.EntityName, 0);
        }
        else
        {   //non SEO URL
            pageURL = Request.Path.Substring(1);
        }
        result.AppendFormat("<link rel=\"alternate\" href=\"{0}{1}\"  hreflang=\"x-default\" />", storeContext.CurrentStore.Url, pageURL);
        result.Append(Environment.NewLine);

        //SEO Lang Url
        var localizationSettings = EngineContext.Current.Resolve<LocalizationSettings>();
        if (localizationSettings.SeoFriendlyUrlsForLanguagesEnabled)
        {
            foreach (var language in languageService.GetAllLanguages(storeId: storeContext.CurrentStore.Id))
            {
                if (urlRecord != null) //SEO URL
                {
                    pageURL = SeoExtensions.GetSeName(urlRecord.EntityId, urlRecord.EntityName, language.Id);

                }
                result.AppendFormat("<link rel=\"alternate\" href=\"{0}{1}/{2}\"  hreflang=\"{1}\" />", storeContext.CurrentStore.Url, language.UniqueSeoCode, pageURL);
                result.Append(Environment.NewLine);
            }
        }
        Html.AppendHeadCustomParts(result.ToString());
    } //Hhreflang 

Thanks a lot falkao ... working well

Thanks a lot! Working fine at 3.60

Thank you for sharing! It works also in 3.90.

great to hear that everything works fine.

Hello,

this code work fine for my site in 4 languages, but I see a problem with hreflang value=x-default, language=default, Region=default, please see my screenshot, is this bug? how can I fix it?

PS: I use english as default language in my site.

Thank you!

Hi,
I'm using nop 4.00, does this code works also for my version?
If yes - in which parts of the code I need to put that pice of code (I'm notcodign nop... so my apologies...),
Any help is most welcome...

Regards,
Lior.

Very useful, thankyou! Minor changes to work on 4.0 for anyone looking at this in the future:

@using Nop.Core.Domain.Localization;
@using System.Text;
@using Nop.Services.Seo;
@using Nop.Core.Infrastructure;
@using Microsoft.AspNetCore.Routing

    //Hhreflang and Bing content-language tags
    //RouteData data = Request.RequestContext.RouteData;
    RouteData data = Context.GetRouteData();
    if (data != null)
    {
        var languageService = EngineContext.Current.Resolve<Nop.Services.Localization.ILanguageService>();
        var storeContext = EngineContext.Current.Resolve<Nop.Core.IStoreContext>();
        var urlRecordService = EngineContext.Current.Resolve<IUrlRecordService>();
        var workContext = EngineContext.Current.Resolve<Nop.Core.IWorkContext>();
        var slug = data.Values["SeName"] as string;
        var urlRecord = urlRecordService.GetBySlug(slug); //Cached
        string pageURL = "";
        var result = new StringBuilder();
        

        //bing lang
        result.AppendFormat("<meta http-equiv=\"content-language\" content=\"{0}\" >", workContext.WorkingLanguage.LanguageCulture.ToLower());
        result.Append(Environment.NewLine);

        //base URL
        if (urlRecord != null)
        {
            pageURL = urlRecordService.GetActiveSlug(urlRecord.EntityId, urlRecord.EntityName, 0);
        }
        else
        {   //non SEO URL
            //pageURL = Request.Path.Substring(1);
            pageURL = Context.Request.Path.Value.Substring(1);
        }
        result.AppendFormat("<link rel=\"alternate\" href=\"{0}{1}\"  hreflang=\"x-default\" />", storeContext.CurrentStore.Url, pageURL);
        result.Append(Environment.NewLine);

        //SEO Lang Url
        var localizationSettings = EngineContext.Current.Resolve<LocalizationSettings>();
        if (localizationSettings.SeoFriendlyUrlsForLanguagesEnabled)
        {
            foreach (var language in languageService.GetAllLanguages(storeId: storeContext.CurrentStore.Id))
            {
                if (urlRecord != null) //SEO URL
                {
                    pageURL = SeoExtensions.GetSeName(urlRecord.EntityId, urlRecord.EntityName, language.Id);

                }
                result.AppendFormat("<link rel=\"alternate\" href=\"{0}{1}/{2}\"  hreflang=\"{1}\" />", storeContext.CurrentStore.Url, language.UniqueSeoCode, pageURL);
                result.Append(Environment.NewLine);
            }
        }
        Html.AppendHeadCustomParts(result.ToString());
    } //Hhreflang

please can you update the code to work on nop4.3 ?

Thank you