Using the legacy ‘backref’ relationship parameterįrom _future_ import annotations from sqlalchemy import Column from sqlalchemy import Table from sqlalchemy import ForeignKey from sqlalchemy import Integer from sqlalchemy.orm import Mapped from sqlalchemy.orm import mapped_column from sqlalchemy.orm import DeclarativeBase from sqlalchemy.orm import relationship class Base ( DeclarativeBase ): pass association_table = Table ( "association_table", Base.Special Relationship Persistence Patterns.Collection Customization and API Details.Using a late-evaluated form for the “secondary” argument of many-to-many.Adding Relationships to Mapped Classes After Declaration.Late-Evaluation of Relationship Arguments. ![]() ![]() Combining Association Object with Many-to-Many Access Patterns.Deleting Rows from the Many to Many Table.Using Sets, Lists, or other Collection Types for Many To Many.Using a late-evaluated form for the “secondary” argument. ![]()
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