json export: Behavior is not implemented when _no_remote == True and datatype is given as a string

Summary

This issue came up during !115 (merged) .

Apparently the json schema exporter does not treat a special case when datatype is given as string.

See https://gitlab.indiscale.com/caosdb/src/caosdb-advanced-user-tools/-/blob/f-add-datatypes/unittests/test_json_schema_exporter.py#L921

added BugUnconfirmed Statusnext labels

changed iteration to Sprint Jan 20, 2025 - Feb 2, 2025

assigned to @florian

mentioned in merge request !115 (merged)

removed Statusnext label

removed iteration Sprint Jan 20, 2025 - Feb 2, 2025