How can I tell if Language Fallback is in effect?

Question

In a solution with Item level language fallback enabled, how do I tell if this is in effect for the current item? I would like to set the html element lang attribute to the language that is being displayed.

For example, if Spanish is requested and a Spanish version exists, it should be set to lang='es'. But if the item falls back to English, it should be set to lang='en'.

I tried:

var language = Sitecore.Context.Item.Versions.Count > 0 ?
            Sitecore.Context.Item.Language :
            Sitecore.Context.Item.GetFallbackItem().Language;

But this always returns the requested language, as the count appears to be greater than zero due to Language fallback.

Answer 1

Update: Just use IsFallback property on the item. Duh. (Thanks Amish Naik!)

The hard way:

Use the LanguageFallbackItemSwitcher class to temporarily disable fallback:

Language language;
Language itemLanguage = Sitecore.Context.Item.Language;
Language fallbackLanguage = Sitecore.Context.Item.GetFallbackItem().Language;
using (new LanguageFallbackItemSwitcher(false))
{
    language = Sitecore.Context.Item.Versions.Count > 0 ? itemLanguage: fallbackLanguage; 
}