koxudaxi/datamodel-code-generator 0.47.0

on GitHub

Breaking Changes

Code Generation Changes

• RootModel defaults use direct instantiation - RootModel fields with default values now generate ClassName(value) instead of ClassName.model_validate(value). This produces cleaner code but changes the generated output (#2714)

• --strict-nullable now applies to JSON Schema - The --strict-nullable option is no longer OpenAPI-only and has been moved to Field customization options. It now also correctly respects nullable on array items (#2713, #2727)

Custom Template Update Required

• If you use custom Jinja2 templates that check field.nullable, you may need to update them. The nullable field on JsonSchemaObject now defaults to None instead of False. Templates should check field.nullable is True instead of just if field.nullable (#2715)

  Example change:

  {# Before #}
  {%- if field.nullable %}...{% endif %}
  
  {# After #}
  {%- if field.nullable is true %}...{% endif %}

Error Handling Changes

• Formatting failures emit warning instead of error - When code formatting fails (e.g., due to black errors), the generator now emits an unformatted output with a warning instead of raising an exception. This allows code generation to succeed even when formatting tools encounter issues (#2737)

What's Changed

• Require @cli_doc marker for all CLI options by @koxudaxi in #2712
• fix: respect nullable on array items with --strict-nullable by @koxudaxi in #2713
• fix: wrap RootModel primitive defaults with default_factory by @koxudaxi in #2714
• Add --use-default-factory-for-optional-nested-models option by @koxudaxi in #2711
• Fix nullable field access in custom templates with strict_nullable by @koxudaxi in #2715
• fix: skip non-model types in __change_field_name by @koxudaxi in #2717
• Add requestBodies scope support for OpenAPI by @koxudaxi in #2716
• Fix test data backspace escape by @koxudaxi in #2718
• fix: quote forward references in recursive RootModel generic parameters by @koxudaxi in #2720
• Add force_exec_validation option to catch runtime errors across Python versions by @koxudaxi in #2719
• Add validation for extra_args in test helper functions by @koxudaxi in #2723
• Fix discriminator with allOf without Literal type for Pydantic v2 by @koxudaxi in #2722
• Fix regex_engine config not applied to RootModel generic by @koxudaxi in #2721
• Fix hostname format with field_constraints to use Field(pattern=...) by @koxudaxi in #2724
• Move --strict-nullable from OpenAPI-only to Field customization by @koxudaxi in #2727
• Run CLI doc coverage test in CI without --collect-cli-docs by @koxudaxi in #2728
• Add --use-generic-base-class option for DRY model config by @koxudaxi in #2726
• Refactor parser base post-processing for DRY and type-safe implementation by @koxudaxi in #2730
• Add --collapse-reuse-models option by @koxudaxi in #2731
• Add --field-type-collision-strategy option by @koxudaxi in #2733
• Revert "Add --field-type-collision-strategy option" by @koxudaxi in #2734
• Add --no-treat-dot-as-module option for flat output structure by @koxudaxi in #2732
• Add --field-type-collision-strategy option by @koxudaxi in #2735
• Add --use-standard-primitive-types option by @koxudaxi in #2736
• Emit unformatted output when formatting fails by @koxudaxi in #2737
• Fix aliasing of builtin type field names by @koxudaxi in #2738
• Add path filters to optimize CodeRabbit reviews by @koxudaxi in #2742
• Add --output-date-class option and date-time-local format support by @koxudaxi in #2739
• Fix custom template directory not working for included templates by @koxudaxi in #2740
• Remove unnecessary model_config from RootModel subclasses by @koxudaxi in #2741
• Fix incorrect --type-mappings examples in documentation by @koxudaxi in #2744
• Add Python 3.13 deprecation warning documentation by @koxudaxi in #2743
• Add admonition support to CLI docs and document --use-default nullable behavior by @koxudaxi in #2745

Full Changelog: 0.46.0...0.47.0