code: def waitinglist_entry_form(context):
      
      initial = {}
      if "request" in context:
          initial.update({
              "referrer": context["request"].META.get("HTTP_REFERER", ""),
              "campaign": context["request"].GET.get("wlc", "")
          })
      return WaitingListEntryForm(initial=initial)
docs: Get a (new) form object to post a new comment.
  
      Syntax::
  
          {% waitinglist_entry_form as [varname] %}