protoform-engine
Server-side ProtoForm rule engine. The same form schema your frontend renders is re-evaluated on the server (visibility, conditional logic, validation) with semantics identical to the TypeScript engine, verified by a shared conformance suite.
The core engine is pure Python with zero dependencies. Django and DRF are optional integration layers.
pip install protoform-engine # engine only, works anywhere (FastAPI, Flask, workers)
pip install protoform-engine[django] # + model mapping helpers
pip install protoform-engine[drf] # + ProtoFormView (GET schema / PATCH step / POST submit)
from protoform import prepare_form, evaluate_rules, validate_step
prepared = prepare_form(schema) # resolve templates, build maps
result = evaluate_rules(prepared, values) # derived state: visible/required/valid/messages
step = validate_step(prepared, values, "step_1") # {"valid": bool, "errors": {...}}
See the Django engine reference and the protocol specification.
MIT licensed.
1 maintainer
Metadata
1 maintainer
Release files for protoform-engine 0.9.0
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