59 lines
1.4 KiB
Python
59 lines
1.4 KiB
Python
"""Pyramid bootstrap environment. """
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from alembic import context
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from pyramid.paster import get_appsettings, setup_logging
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from sqlalchemy import engine_from_config
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from cao_blogr.models.meta import Base
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config = context.config
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setup_logging(config.config_file_name)
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settings = get_appsettings(config.config_file_name)
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target_metadata = Base.metadata
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def run_migrations_offline():
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"""Run migrations in 'offline' mode.
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This configures the context with just a URL
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and not an Engine, though an Engine is acceptable
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here as well. By skipping the Engine creation
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we don't even need a DBAPI to be available.
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Calls to context.execute() here emit the given string to the
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script output.
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"""
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context.configure(url=settings['sqlalchemy.url'])
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with context.begin_transaction():
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context.run_migrations()
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def run_migrations_online():
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"""Run migrations in 'online' mode.
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In this scenario we need to create an Engine
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and associate a connection with the context.
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"""
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engine = engine_from_config(settings, prefix='sqlalchemy.')
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connection = engine.connect()
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context.configure(
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connection=connection,
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target_metadata=target_metadata
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)
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try:
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with context.begin_transaction():
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context.run_migrations()
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finally:
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connection.close()
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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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