Uploads to archive items fail when CIV is file type and JSON sent

[jmsmkn]

If you have a file type CIV (e.g. clinical-information-lung-ct) and try to upload a JSON object directly to that (e.g. {'age': 60, 'gender': 'FEMALE', 'smoking_status': 'Ex-smoker', 'clinical_category': None, 'regional_nodes_category': None, 'metastasis_category': None}) it will fail with ValueError: You can only upload one single file to a clinical-information-lung-ct interface..

This is kindof cryptic, as the solution is for the user to write the file to disk first, then send the name or Path object along.

We should detect this and handle it ourselves as the user should need to know about the details of how the CIV is stored within GC in order to upload it. However, we need to be careful as string values could just point to files.