Accessibility library instances store payment_models as dicts instead of PaymentModelType objects

[gefleury]

Environment: openminds 0.5.1, Python 3.12

All Accessibility library instances (e.g. Accessibility.direct_virtual_open_access) define their properties as dicts {"@id": "..."} instead of typed objects. See openminds/v5/core/miscellaneous/accessibility.py

Minimal example

import openminds.latest
from openminds import Collection
from openminds.latest.core.miscellaneous.accessibility import Accessibility
from pathlib import Path

# Minimal collection
c = Collection()
c.add(Accessibility.direct_virtual_open_access)

# Validate
display(c.validate())

#Save
out_dir = Path("../test_accessibility")
out_dir.mkdir(exist_ok=True)
c.save(out_dir, individual_files=True, group_by_schema=True)

# Reload from disk — raises KeyError
c2 = Collection()
c2.load(out_dir, version="latest")

In this example, the referenced PaymentModelType instance is never added to the collection when saving, which causes a KeyError in Collection.load() .

Note: the same pattern likely affects other properties (channel, eligibility, form, process) of Accessibility library instances