1af442481e
将后端迁入 backend/，完善根目录 .gitignore，删除误提交的 .mypy_cache 缓存文件。 Co-authored-by: Cursor <cursoragent@cursor.com>
68 lines
2.0 KiB
Python
Executable File
68 lines
2.0 KiB
Python
Executable File
"""Alembic environment.
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开发与生产均通过 `alembic upgrade head` 应用表结构；应用启动时不再自动建表。
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本文件读取 `app.config.settings`，把 asyncpg URL 转为同步
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``postgresql+psycopg://``（psycopg3）供 Alembic 使用（仅迁移期间）。
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需安装 `psycopg` 包，见 `pyproject.toml`。
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"""
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from __future__ import annotations
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from logging.config import fileConfig
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from alembic import context
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from sqlalchemy import engine_from_config, pool
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from app.config import settings
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import app.db.models # noqa: F401 - register ORM tables on Base.metadata
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from app.db.base import Base
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alembic_config = context.config
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if alembic_config.config_file_name is not None:
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fileConfig(alembic_config.config_file_name)
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target_metadata = Base.metadata
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def _sync_database_url() -> str:
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"""把 asyncpg URL 转为同步 psycopg3 URL，避免 Alembic 强依赖 async 驱动。"""
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url = settings.sqlalchemy_database_url
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return url.replace("postgresql+asyncpg://", "postgresql+psycopg://", 1)
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def run_migrations_offline() -> None:
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context.configure(
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url=_sync_database_url(),
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target_metadata=target_metadata,
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literal_binds=True,
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dialect_opts={"paramstyle": "named"},
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)
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with context.begin_transaction():
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context.run_migrations()
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def run_migrations_online() -> None:
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config_section = alembic_config.get_section(alembic_config.config_ini_section) or {}
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config_section["sqlalchemy.url"] = _sync_database_url()
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connectable = engine_from_config(
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config_section,
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prefix="sqlalchemy.",
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poolclass=pool.NullPool,
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)
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with connectable.connect() as connection:
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context.configure(
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connection=connection,
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target_metadata=target_metadata,
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compare_type=True,
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)
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with context.begin_transaction():
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context.run_migrations()
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if context.is_offline_mode():
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run_migrations_offline()
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else:
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run_migrations_online()
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