Add SQLAlchemy 2.0 support (issue #49) #75
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xnuinside
commented
Jan 18, 2026
xnuinside
commented
- New sqlalchemy_v2 generator with modern SQLAlchemy 2.0 syntax:
- Uses DeclarativeBase instead of deprecated declarative_base()
- Uses Mapped[T] type annotations for columns
- Uses mapped_column() instead of Column()
- Uses X | None union syntax for nullable columns
- Support for all column types, foreign keys, indexes, and constraints
- Added functional tests for SQLAlchemy v2 generation
- Added integration tests for SQLAlchemy v2 (validates generated code runs)
- Added integration tests for OpenAPI 3 generator
- Updated CHANGELOG.md and README.md with SQLAlchemy v2 support
- Removed unused files (SUGGESTIONS.md, one.ddl)
- New sqlalchemy_v2 generator with modern SQLAlchemy 2.0 syntax: - Uses DeclarativeBase instead of deprecated declarative_base() - Uses Mapped[T] type annotations for columns - Uses mapped_column() instead of Column() - Uses X | None union syntax for nullable columns - Support for all column types, foreign keys, indexes, and constraints - Added functional tests for SQLAlchemy v2 generation - Added integration tests for SQLAlchemy v2 (validates generated code runs) - Added integration tests for OpenAPI 3 generator - Updated CHANGELOG.md and README.md with SQLAlchemy v2 support - Removed unused files (SUGGESTIONS.md, one.ddl)
- dataclass: 4 tests for basic model, fields, defaults, multiple tables - sqlalchemy (legacy): 4 tests for basic model, columns, FK, multiple tables - sqlalchemy_core: 5 tests (skipped - generator has known bugs) - sqlmodel: 4 tests (skipped - requires Pydantic>=2.0, conflicts with table-meta) - gino: 4 tests (skipped - requires SQLAlchemy<1.4, conflicts with SQLAlchemy>=2.0) Note: Some tests are skipped due to dependency conflicts: - sqlmodel requires pydantic>=2.0, but table-meta requires pydantic<2.0 - gino requires sqlalchemy<1.4, but we use sqlalchemy>=2.0 - sqlalchemy_core generator has bugs (missing column names, broken type sizes)
- Separate tox environments for different dependency requirements: - py39-py313: unit and functional tests - integration-sqlalchemy: pydantic v1, sqlalchemy v2 - integration-gino: pydantic v1, sqlalchemy v1.3 (gino requirement) - Separate CI jobs for each integration test group - SQLModel integration tests disabled due to unresolvable conflict: - sqlmodel requires pydantic>=2.0 - table-meta requires pydantic<2.0 - Tests will be skipped until table-meta adds pydantic 2.x support
Integration tests now use pre-generated code fixtures instead of calling create_models() at runtime. This allows SQLModel tests to run in an isolated environment with pydantic>=2.0 without conflicts. Tests verify that the generated code (as users would commit to their repos) works correctly with the target library.
- Fix sqlalchemy_core generator: add column names to output - Fix sqlalchemy_core generator: include type name with size - Fix sqlalchemy_core generator: correct positional/keyword arg order for ForeignKey - Convert gino tests to pre-generated code fixtures (no omymodels dependency) - Update tox.ini and CI workflow for isolated gino tests - Remove flawed parametrized converter test (py-models-parser limitations) - Update functional test expected values for sqlalchemy_core
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