Hi Qamar

There are different ways to solve this, but what I tend is creating implementing af custom IUrlProvider:

public class ExternalUrlProvider : IUrlProvider
{
    public IEnumerable<UrlInfo> GetOtherUrls(UmbracoContext umbracoContext, int id, Uri current)
    {
        return Enumerable.Empty<UrlInfo>();
    }

    public UrlInfo GetUrl(UmbracoContext umbracoContext, IPublishedContent content, UrlMode mode, string culture, Uri current)
    {
        if (content is ContentModels.ExternalPage page)
        {
            var externalUrl = page.ExternalUrl;

            if (string.IsNullOrWhiteSpace(externalUrl)) return null;

                return new UrlInfo(externalUrl, true, culture);
            }

            return null;
        }
    }
}

In this case I have a custom External Page (externalPage) document type and the ExternalPage class is generated by ModelsBuilder.

Furthermore I have an extension method:

public static class PublishedContentExtensions
{
    public static bool IsExternal(this IPublishedContent content)
    {
        return content is ContentModels.ExternalPage;
    }
}

so in navigation you can do something specific with this page type:

<a href="@menuItem.Url()" target="@(menuItem.IsExternal() ? "_blank" : "_self")" rel="@(menuItem.IsExternal() ? "noopener" : null)">@menuItem.Name</a>

There are some documentation here regarding IUrlProvider: https://our.umbraco.com/Documentation/Reference/Routing/Request-Pipeline/outbound-pipeline-vpre81 but should also be available in v7: https://24days.in/umbraco-cms/2014/urlprovider-and-contentfinder

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