Disallow profile updating if user is checked in

It gives a flash and pops the user back to dashboard.

vendor/registrasion/registrasion/views.py

@@ -36,6 +36,7 @@ from django.http import Http404, HttpResponse
 from django.shortcuts import redirect
 from django.shortcuts import render
 from django.template import Context, Template, loader
+from django.urls import reverse
 import waffle
 
 from lxml import etree
@@ -373,6 +374,13 @@ def edit_profile(request):
 
     '''
 
+    if hasattr(request.user, "checkin"):
+        if request.user.checkin.checked_in_bool:
+            messages.add_message(
+                request, messages.ERROR,
+                'Profile cannot be edited as you have been checked in')
+            return redirect(reverse('dashboard'))
+
     form, handled = _handle_profile(request, "profile")
 
     if handled and not form.errors: