feat(home/models.py): add user_has_access property to CoursePage

home/models.py

@@ -20,6 +20,17 @@ class CoursePage(Page):
         help_text="Select a group to restrict access to this course. Non-members will be prompted to purchase the course to view modules.",
     )
 
+    def _user_has_access(self, user):
+        if not user.is_authenticated:
+            return False
+        user_group_ids = user.groups.values_list("id", flat=True)
+        return self.allowed_groups.filter(id__in=user_group_ids).exists()
+
+    def get_context(self, request):
+        context = super().get_context(request)
+        context["user_has_access"] = self._user_has_access(request.user)
+        return context
+
     content_panels = Page.content_panels + [
         FieldPanel("body"),
         FieldPanel("allowed_groups", widget=CheckboxSelectMultiple),