Pims tweaks

trying to fix metadata.json

shared/workspaces/workspaces/workflow/schema.py

@@ -16,6 +16,7 @@
 # You should have received a copy of the GNU General Public License
 # along with Workspaces.  If not, see <https://www.gnu.org/licenses/>.
 import datetime
+import json
 import logging
 from typing import Callable, Dict, List
 
@@ -155,6 +156,9 @@ class WorkflowTemplate(JSONSerializable):
         """
         # add some rendering helpers to the argument
         render_helpers = {"make_condor_jobname": self.make_condor_jobname}
+        if "splits" in argument:
+            argument["splits"] = json.dumps(argument["splits"])
+
         argument = {**render_helpers, **argument}
 
         # render