diff options
author | René 'Necoro' Neumann <necoro@necoro.net> | 2016-01-09 23:22:14 +0100 |
---|---|---|
committer | René 'Necoro' Neumann <necoro@necoro.net> | 2016-05-01 17:26:45 +0200 |
commit | 5e8838cb1f16112c939a229b3a54fc5cd4098fef (patch) | |
tree | 1a02722ea0c1cf3cbbd9cc1e70506533dc548705 /migrations/env.py | |
parent | 3c9a2a34d44aefbcd6787f825acd5a0167181e24 (diff) | |
download | kosten-5e8838cb1f16112c939a229b3a54fc5cd4098fef.tar.gz kosten-5e8838cb1f16112c939a229b3a54fc5cd4098fef.tar.bz2 kosten-5e8838cb1f16112c939a229b3a54fc5cd4098fef.zip |
Init flask-migrate
Diffstat (limited to '')
-rw-r--r-- | migrations/env.py | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/migrations/env.py b/migrations/env.py new file mode 100644 index 0000000..70961ce --- /dev/null +++ b/migrations/env.py @@ -0,0 +1,73 @@ +from __future__ import with_statement +from alembic import context +from sqlalchemy import engine_from_config, pool +from logging.config import fileConfig + +# this is the Alembic Config object, which provides +# access to the values within the .ini file in use. +config = context.config + +# Interpret the config file for Python logging. +# This line sets up loggers basically. +fileConfig(config.config_file_name) + +# add your model's MetaData object here +# for 'autogenerate' support +# from myapp import mymodel +# target_metadata = mymodel.Base.metadata +from flask import current_app +config.set_main_option('sqlalchemy.url', current_app.config.get('SQLALCHEMY_DATABASE_URI')) +target_metadata = current_app.extensions['migrate'].db.metadata + +# other values from the config, defined by the needs of env.py, +# can be acquired: +# my_important_option = config.get_main_option("my_important_option") +# ... etc. + +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() + +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() + +if context.is_offline_mode(): + run_migrations_offline() +else: + run_migrations_online() + |