Add full media url in Rich text editor

Question

We have email templates that are stored in Sitecore. We are using Richtext field to store html of emails. When I add images from Sitecore media library to that rich text field links are generating as

  <img src="-/media/Id.ashx?la=en-gb" alt="email-header" width="600" height="149">

because of this, gmail rendering the image wrong as: http://-/media/Id.ashx?la=en-gb

We can search and replace the html while we sending emails, but is there is a way to tell Sitecore to use full image url's for rich text field?

Answer 1

From what I remember, the logic responsible for RTE links is in ExpandLinks processor of renderField pipeline:

<processor type="Sitecore.Pipelines.RenderField.ExpandLinks, Sitecore.Kernel"/>

public virtual void Process(RenderFieldArgs args)
{
  Assert.ArgumentNotNull((object) args, "args");
  if (Context.PageMode.IsExperienceEditorEditing)
    return;
  args.Result.FirstPart = DynamicLink.ExpandLinks(args.Result.FirstPart, Settings.Rendering.SiteResolving);
  args.Result.LastPart = DynamicLink.ExpandLinks(args.Result.LastPart, Settings.Rendering.SiteResolving);
}

You could write your own logic here to make sure that links include host name as well.

You can also update LinkProvider method ExpandDynamicLinks to force it to include host names:

public virtual string ExpandDynamicLinks(string text, bool resolveSites)
{
  Assert.ArgumentNotNull((object) text, "text");
  LinkProvider.LinkParser linkParser = this.CreateLinkParser();
  UrlOptions defaultUrlOptions = this.GetDefaultUrlOptions();
  defaultUrlOptions.SiteResolving = resolveSites;

  defaultUrlOptions.AlwaysIncludeServerUrl = true; // <---

  return linkParser.ExpandDynamicLinks(text, defaultUrlOptions);
}

---

EDIT

If you want Sitecore to expand those links for you in custom code, you can run something like that:

protected virtual string RunPipeline(Field field)
{
    using (new SiteContextSwitcher(SiteContext.GetSite("website")))
    {
        RenderFieldArgs renderFieldArgs = new RenderFieldArgs()
        {
            Item = field.Item,
            FieldName = field.Name,
            DisableWebEdit = true
        };
        CorePipeline.Run("renderField", (PipelineArgs) renderFieldArgs);
        return renderFieldArgs.Result.FirstPart + renderFieldArgs.Result.LastPart;
    }
}

string bodyOfEmail = RunPipeline(item.Fields[FieldIds.EmailBodyField]);