Tortoise ORM Files

Added

• CheckConstraint support in Meta.constraints — named check constraints are now captured by the migration autodetector, enabling AddConstraint/RemoveConstraint/RenameConstraint generation via makemigrations.
• UniqueConstraint.condition parameter for partial unique indexes on PostgreSQL (emitted as CREATE UNIQUE INDEX ... WHERE).

Fixed

• FK field-to-column resolution in constraint operations — FK fields like organization are now correctly resolved to their DB column (e.g. organization_id) in add_constraint, remove_constraint, and rename_constraint across all backends.
• MSSQL HASHBYTES expression default — RandomHex now wraps NEWID() with CAST(... AS NVARCHAR(36)) to avoid implicit conversion error.
• MySQL ALTER COLUMN SET DEFAULT template now wraps expression defaults in parentheses.
• RenameConstraint operation now preserves constraint type and fields during forward/backward migrations.
• MySQL schema editor: FK index protection (_create_missing_fk_index) prevents MySQL error 1553 when dropping the only index covering a foreign key column.
• MySQL schema editor: expression default two-step workaround for ADD COLUMN with non-deterministic SqlDefault expressions (e.g. RANDOM_BYTES).
• Multi-column constraint introspection — constraint name resolution now matches on the exact set of columns across all backends (PostgreSQL, MySQL, MSSQL, SQLite, Oracle).
• Tortoise.close_connections() now propagates call to current context. (#2110)