Show message if process or artifact data is empty instead of empty da…

…taframe

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project tries to adhere to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+### Changed
+- show message if process or artifact data is empty instead of empty dataframe
+
 ## [0.4.1] - 2024-03-06
 ### Changed
 - update data_adapter to v0.20.2

django_energysystem_viewer/views.py

@@ -111,8 +111,8 @@ def get_context_data(self, **kwargs):
         return {
             "collection_name": collection_name,
             "artifacts": artifacts,
-            "scalars": process.scalars.to_html(),
-            "timeseries": process.timeseries.to_html(),
+            "scalars": process.scalars.to_html() if not process.scalars.empty else "No data available",
+            "timeseries": process.timeseries.to_html() if not process.timeseries.empty else "No data available",
         }
 
 
@@ -170,7 +170,7 @@ def get_context_data(self, **kwargs):
             "processes": collection.get_collection_meta(collection_name)["artifacts"][group_name][artifact_name][
                 "names"
             ],
-            "data": artifact.data.to_html(),
+            "data": artifact.data.to_html() if not artifact.data.empty else "No data available",
             "metadata": metadataWidget.render(),
         }