Experience Forms — Getting the Context Site and Item in Submit Actions

At time of writing, there is no out of the box way to resolve the correct Sitecore.Context.Item or Sitecore.Context.Site from within a Submit Action.

This is a problem if we want to do something with a form on a particular site, page, or language.

Sitecore.Context.Site will resolve to the wrong site in a multi-site instance — it will just take whatever the default catch-all is (usually “website”).

Sitecore.Context.Item just returns null.

I drew inspiration from this question on SSE about how to resolve the correct language.

SiteAwareInitializeAjaxOptions.cs

public class ContextAwareInitializeAjaxOptions : InitializeAjaxOptions
{
    public const string ItemKey = "sc_ctx_item";
    private const string siteKey = "sc_site";

    public ContextAwareInitializeAjaxOptions(IFormRenderingContext formRenderingContext)
        : base(formRenderingContext)
    {
    }

    public override void Process(RenderFormEventArgs args)
    {
        if (!args.IsPost && !args.QueryString.ContainsKey(siteKey))
        {
            args.QueryString.Add(siteKey, Sitecore.Context.Site.Name);
        }
        if (!args.IsPost && !args.QueryString.ContainsKey(ItemKey))
        {
            var item = Sitecore.Context.Item;
            if (item != null)
            {
                args.QueryString.Add(ItemKey, item.ID.ToString());
            }
        }

        base.Process(args);
    }
}
    
    Patch in:
    
<forms.renderForm>
    <processor patch:instead="*[@type='Sitecore.ExperienceForms.Mvc.Pipelines.RenderForm.InitializeAjaxOptions, Sitecore.ExperienceForms.Mvc']"
               type="Your.Solution.Pipelines.RenderForm.ContextAwareInitializeAjaxOptions, Your.Solution" resolve="true"/>
  </forms.renderForm>

Source: gist

You can then access the correct Sitecore.Context.Site as normal, and you can retrieve the current context item in your Submit Action code.

var contextItemIdStr = HttpContext.Current.Request.Params[SiteAwareInitializeAjaxOptions.ItemKey];
if (!string.IsNullOrEmpty(contextItemIdStr))
{
  pageItem = Sitecore.Context.Site.Database.GetItem(contextItemIdStr);
}

Happy travels!