Moderne licensed

Find `@model_validator(mode='after')` on a classmethod

Recipe IDorg.openrewrite.python.migrate.pydantic.FindModelValidatorAfterClassmethodArtifactopenrewrite-migrate-python

Pydantic 2.12 deprecated @model_validator with mode='after' on a classmethod; the implicit classmethod conversion for after model validators is removed in V3. Such validators should be instance methods (self, no @classmethod). This recipe flags the decorator for review, since the rewrite is not safe to mechanize. field_validator is unaffected.

Single recipepythonpydanticmigration2.12Proprietary

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe org.openrewrite.python.migrate.pydantic.FindModelValidatorAfterClassmethod

If the recipe isn’t available locally, install it with:

mod config recipes pip install openrewrite-migrate-python