23 lines
701 B
Python
23 lines
701 B
Python
"""Declarative base with a fixed naming convention.
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The naming convention makes Alembic autogenerate deterministic, named
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constraints — essential for clean, reversible migrations.
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"""
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from sqlalchemy import MetaData
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from sqlalchemy.orm import DeclarativeBase
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NAMING_CONVENTION = {
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"ix": "ix_%(column_0_label)s",
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"uq": "uq_%(table_name)s_%(column_0_name)s",
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"ck": "ck_%(table_name)s_%(constraint_name)s",
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"fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
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"pk": "pk_%(table_name)s",
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}
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class Base(DeclarativeBase):
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"""Base for all ORM models. Import models so Alembic sees their metadata."""
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metadata = MetaData(naming_convention=NAMING_CONVENTION)
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