add support for previewing pages

dnscms/home/models.py

@@ -10,9 +10,10 @@ from wagtail.admin.panels import (
     PageChooserPanel,
 )
 from wagtail.models import Orderable, Page
+from wagtail_headless_preview.models import HeadlessMixin
 
 
-class HomePage(Page):
+class HomePage(HeadlessMixin, Page):
     max_count = 1
 
     content_panels = Page.content_panels + [