70 lines
1.9 KiB
Python
70 lines
1.9 KiB
Python
import os
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import sys
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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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# Add the project root to sys.path so that models can be imported.
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sys.path.insert(0, os.path.realpath(os.path.join(os.path.dirname(__file__), "..")))
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from app import create_app
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from models import db
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# Create the Flask application to get the database URI.
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app = create_app()
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# Alembic Config object.
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config = context.config
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# Override the sqlalchemy.url with the value from the Flask config.
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config.set_main_option("sqlalchemy.url", app.config["SQLALCHEMY_DATABASE_URI"])
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# Set up Python logging from the alembic.ini [loggers] section.
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if config.config_file_name is not None:
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fileConfig(config.config_file_name)
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# Target metadata for 'autogenerate' support.
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target_metadata = db.metadata
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def run_migrations_offline() -> None:
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"""Run migrations in 'offline' mode.
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Configures the context with just a URL and not an Engine.
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"""
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url = config.get_main_option("sqlalchemy.url")
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context.configure(
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url=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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"""Run migrations in 'online' mode.
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Creates an Engine and associates a connection with the context.
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"""
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connectable = engine_from_config(
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config.get_section(config.config_ini_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(connection=connection, target_metadata=target_metadata)
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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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