Hi,

It seems like the default behavior is to use the display option's name for selecting the template tag or TemplateModel if the tag is not set. This is a problem if we want to pass in a tag to use and an editor has chosen a display option. E.g.:

@Html.PropertyFor(x => x.CurrentPage.RelatedNewsArticles, new { Tag = "UseThisTag" })

Will not use "UseThisTag" when selecting template if the editor selects a display option, even though that option doesn't have a tag specified.

Now I've solved this by having my own ContentAreaRenderer and overriding GetContentAreaItemTemplateTag like this:

/// 

///     Overridden so we can use the tag even though a display option is selected
///     and that display option's tag is not set.
/// 
/// The html helper.
///  The content area item.
/// The template tag for the content area item.
protected override string GetContentAreaItemTemplateTag(HtmlHelper htmlHelper, ContentAreaItem contentAreaItem)
{
    var tag = htmlHelper.ViewData.GetRenderSettings("Tag");

    if (string.IsNullOrEmpty(tag))
    {
        return base.GetContentAreaItemTemplateTag(htmlHelper, contentAreaItem);
    }

    var displayOption = contentAreaItem.LoadDisplayOption();

    if (displayOption != null && string.IsNullOrEmpty(displayOption.Tag))
    {
        return tag;
    }

    return base.GetContentAreaItemTemplateTag(htmlHelper, contentAreaItem);
}

I find this behavior a bit strange and think the default implementation should be changed.