Allow staging/production hostnames

mandelstudio/settings/base.py

@@ -36,6 +36,18 @@ INSTALLED_APPS = [
     "mandelstudio",
 ] + INSTALLED_APPS
 
+# Ensure the canonical staging / production hostnames are accepted by Django.
+# (Staging uses the welkomstaging domain; production uses mandelblog.com.)
+_extra_allowed_hosts = [
+    "mandelstudio.welkombij.mandelblog.com",
+    "www.mandelblog.com",
+    "mandelblog.com",
+]
+if "ALLOWED_HOSTS" in globals():
+    for _host in _extra_allowed_hosts:
+        if _host not in ALLOWED_HOSTS:
+            ALLOWED_HOSTS.append(_host)
+
 
 # Never allow demo-data plugins in this production project context.
 def _is_demo_data_app(app_label: str) -> bool: