Setting "GEOFFREY_DYNMAP_URL" to none disabled the dynmap iframe

GeoffreyApp/models.py

@@ -272,7 +272,7 @@ class Location(models.Model):
 
         base_url = getattr(settings, "GEOFFREY_DYNMAP_BASE_URL")
         world_name = getattr(settings, "GEOFFREY_DYNMAP_WORLD_NAME")
-        if base_url is not None:
+        if base_url:
             url = base_url + "/?worldname={}&mapname=surface&zoom=4&x={}&y=65&z={}".format(world_name, self.x_coord,
                                                                                            self.z_coord)
             return url

GeoffreyApp/templates/GeoffreyApp/location.html

@@ -24,9 +24,11 @@
         <p>Tunnel: {{ loc.tunnel.tunnel_str }}</p>
     {% endif %}
     <hr class="my-4">
-    {% block info %}{% endblock %}
-    <iframe src="{{ loc.dynmap_url }}" width="100%" height="500">
-        Your browser does not support iframes.
-    </iframe>
+    {% if loc.dynmap %}
+        {% block info %}{% endblock %} <iframe id="frame" style="visibility: hidden" onload="this.style.visibility = 'visible'" src="{{ loc.dynmap_url }}" width="100%" height="500">
+            Your browser does not support iframes.
+        </iframe>
+    {% endif %}
+
 
 {% endblock %}

GeoffreyApp/views.py

@@ -90,6 +90,7 @@ class MarketList(GeoffreyModelList):
 class PointOfInterestList(GeoffreyModelList):
     model = PointOfInterest
 
+
 class AttractionList(GeoffreyModelList):
     model = Attraction