jupyter-config/jupyter_server_config.d/jupyter_openbis_extension.json

+{
+  "ServerApp": {
+    "jpserver_extensions": {
+      "jupyter-openbis-server.main": true
+    }
+  }
+}

jupyter-openbis-server/dataset.py

@@ -97,8 +97,6 @@ class DataSetTypesHandler(IPythonHandler):
             return
 
         try:
-            dataset_types = conn.openbis.get_dataset_types()
-
             # get all dataset types
             ds_type_dicts = []
             for dt in conn.openbis.get_dataset_types():
@@ -106,23 +104,28 @@ class DataSetTypesHandler(IPythonHandler):
                 # get property assignments for every dataset-type
                 # and add them in the key «propertyAssignments»
                 pas = dt.get_property_assignments()
-                pa_dicts = pas.df[['propertyType','mandatory','ordinal','section']].to_dict(orient='records')
-                dt_dict['propertyAssignments'] = pa_dicts
-
-                for pa_dict in pa_dicts:
-                    # add a few more attributes to the property assignments
-                    pt = conn.openbis.get_property_type(pa_dict['propertyType'])
-                    pa_dict['code'] = pt.code
-                    pa_dict['label'] = pt.label
-                    pa_dict['description'] = pt.description
-                    pa_dict['dataType'] = pt.dataType
-                    # add vocabulary, if exists, as key «terms»
-                    if pt.dataType == 'CONTROLLEDVOCABULARY':
-                        terms = conn.openbis.get_terms(pt.vocabulary)
-                        terms_dict = terms.df[['code','label','description','official','ordinal']].to_dict(orient='records')
-                        pa_dict['terms'] = terms_dict
-
-                ds_type_dicts.append(dt_dict)
+
+                pas_columns = ['propertyType', 'mandatory', 'ordinal', 'section']
+                if not set(pas.df).isdisjoint(pas_columns):
+                    pa_dicts = pas.df[pas_columns].to_dict(orient='records')
+                    dt_dict['propertyAssignments'] = pa_dicts
+
+                    for pa_dict in pa_dicts:
+                        # add a few more attributes to the property assignments
+                        pt = conn.openbis.get_property_type(pa_dict['propertyType'])
+                        pa_dict['code'] = pt.code
+                        pa_dict['label'] = pt.label
+                        pa_dict['description'] = pt.description
+                        pa_dict['dataType'] = pt.dataType
+                        # add vocabulary, if exists, as key «terms»
+                        if pt.dataType == 'CONTROLLEDVOCABULARY':
+                            terms = conn.openbis.get_terms(pt.vocabulary)
+                            terms_columns = ['code', 'label', 'description', 'official', 'ordinal']
+                            if not set(terms.df).isdisjoint(terms_columns):
+                                terms_dict = terms.df[terms_columns].to_dict(orient='records')
+                                pa_dict['terms'] = terms_dict
+
+                    ds_type_dicts.append(dt_dict)
 
             self.write({
                 "dataSetTypes": ds_type_dicts

setup.py

@@ -11,7 +11,7 @@ with open("README.md", "r", encoding="utf-8") as fh:
 
 setup(
     name='jupyter-openbis-server',
-    version= '0.4.0',
+    version= '0.4.1rc2',
     author='Swen Vermeul |  ID SIS | ETH Zürich',
     author_email='swen@ethz.ch',
     description='Server Extension for Jupyter notebooks to connect to openBIS and download/upload datasets, inluding the notebook itself',