12117 remove clone from cable (#12130)

* 12117 remove clone from cable

* 12117 remove clone button if no params

* Update clone.html

* Update clone.html

* Update clone.html

---------

Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>

netbox/utilities/templates/buttons/clone.html

@@ -1,3 +1,5 @@
-<a href="{{ url }}" class="btn btn-sm btn-success" role="button">
-    <i class="mdi mdi-content-copy" aria-hidden="true"></i>&nbsp;Clone
-</a>
+{% if url %}
+  <a href="{{ url }}" class="btn btn-sm btn-success" role="button">
+    <i class="mdi mdi-content-copy" aria-hidden="true"></i> Clone
+  </a>
+{% endif %}

netbox/utilities/templatetags/buttons.py

@@ -20,6 +20,8 @@ def clone_button(instance):
     param_string = prepare_cloned_fields(instance).urlencode()
     if param_string:
         url = f'{url}?{param_string}'
+    else:
+        url = None
 
     return {
         'url': url,