[views] Do not select goto-ckan-dataset if there is no CKAN id

views.py

@@ -35,7 +35,7 @@ class GotoCKANDatasetComponent(component.EntityCtxComponent):
     """
     __regid__ = 'ckanpublish.goto-ckan-dataset'
     __select__ = (component.EntityCtxComponent.__select__ &
-                  score_entity(lambda x: hasattr(x, 'ckan_dataset_id')))
+                  score_entity(lambda x: getattr(x, 'ckan_dataset_id', False)))
     title = _('CKAN dataset')
     context = 'incontext'