本文整理汇总了Python中alembic.context.begin_transaction方法的典型用法代码示例。如果您正苦于以下问题：Python context.begin_transaction方法的具体用法？Python context.begin_transaction怎么用？Python context.begin_transaction使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类alembic.context的用法示例。
在下文中一共展示了context.begin_transaction方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: run_migrations_offline
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
url = config.get_main_option("sqlalchemy.url")
context.configure(
url=url, target_metadata=target_metadata, literal_binds=True
)
with context.begin_transaction():
context.run_migrations() 示例2: run_migrations_online
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
connectable = engine_from_config(
config.get_section(config.config_ini_section),
prefix="sqlalchemy.",
poolclass=pool.NullPool,
)
with connectable.connect() as connection:
context.configure(
connection=connection, target_metadata=target_metadata
)
with context.begin_transaction():
context.run_migrations() 示例3: run_migrations_offline
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
return # We don't support offline
url = config.get_main_option("sqlalchemy.url")
context.configure(
url=url, target_metadata=target_metadata, literal_binds=True)
with context.begin_transaction():
context.run_migrations() 示例4: run_migrations_online
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
db_url = os.environ['DRYDOCK_DB_URL']
connectable = engine_from_config(
config.get_section(config.config_ini_section),
prefix='sqlalchemy.',
poolclass=pool.NullPool,
url=db_url)
with connectable.connect() as connection:
context.configure(
connection=connection, target_metadata=target_metadata)
with context.begin_transaction():
context.run_migrations() 示例5: run_migrations_offline
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
url = config.get_main_option("sqlalchemy.url")
context.configure(
url=url,
target_metadata=target_metadata,
literal_binds=True,
dialect_opts={"paramstyle": "named"},
)
with context.begin_transaction():
context.run_migrations() 示例6: run_migrations_online
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
connectable = engine_from_config(
config.get_section(config.config_ini_section),
prefix="sqlalchemy.",
poolclass=pool.NullPool,
connect_args={'options': f'-c search_path={_app_config.POSTGRES_SCHEMA}'}
)
with connectable.connect() as connection:
context.configure(
connection=connection, target_metadata=target_metadata
)
with context.begin_transaction():
context.run_migrations() 示例7: run_migrations_offline
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
url = config.get_main_option("sqlalchemy.url")
context.configure(url=url)
with context.begin_transaction():
context.run_migrations() 示例8: run_migrations_online
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
engine = engine_from_config(
config.get_section(config.config_ini_section),
prefix='sqlalchemy.',
poolclass=pool.NullPool)
connection = engine.connect()
context.configure(
connection=connection,
target_metadata=target_metadata
)
try:
with context.begin_transaction():
context.run_migrations()
finally:
connection.close() 示例9: run_migrations_offline
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
conf = config.conf
context.configure(url=conf.indexer.url,
target_metadata=target_metadata)
with context.begin_transaction():
context.run_migrations() 示例10: run_migrations_online
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
conf = config.conf
indexer = sqlalchemy.SQLAlchemyIndexer(conf)
with indexer.facade.writer_connection() as connectable:
with connectable.connect() as connection:
context.configure(
connection=connection,
target_metadata=target_metadata
)
with context.begin_transaction():
context.run_migrations()
indexer.disconnect()
# If `alembic' was used directly from the CLI 示例11: run_migrations_online
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
engine = sqla_api.get_engine()
with engine.connect() as connection:
context.configure(
connection=connection,
target_metadata=target_metadata,
render_as_batch=True
)
with context.begin_transaction():
context.run_migrations() 示例12: run_migrations_offline
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
url = os.environ['HAMMER_DATABASE_URL']
context.configure(
url=url,
target_metadata=target_metadata,
literal_binds=True,
dialect_opts={"paramstyle": "named"},
)
with context.begin_transaction():
context.run_migrations() 示例13: run_migrations_online
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
configuration = config.get_section(config.config_ini_section)
configuration['sqlalchemy.url'] = os.environ['HAMMER_DATABASE_URL']
connectable = engine_from_config(
configuration,
prefix="sqlalchemy.",
poolclass=pool.NullPool,
)
with connectable.connect() as connection:
context.configure(
connection=connection, target_metadata=target_metadata
)
with context.begin_transaction():
context.run_migrations() 示例14: run_migrations_offline
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
url = config.get_main_option("sqlalchemy.url")
context.configure(
url=url, target_metadata=target_metadata, literal_binds=True)
with context.begin_transaction():
context.run_migrations() 示例15: run_migrations_online
# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
connectable = engine_from_config(
config.get_section(config.config_ini_section),
prefix='sqlalchemy.',
poolclass=pool.NullPool)
with connectable.connect() as connection:
context.configure(
connection=connection,
target_metadata=target_metadata
)
with context.begin_transaction():
context.run_migrations()