sqlalchemy_seed is a seed library which provides initial data to database using SQLAlchemy.
sqlalchemy_seed is similar to Django fixtures.
pip install sqlalchemy_seed/myapp
__init__.py
models.py
/fixtures
accounts.yamlModel file.
# -*- coding: utf-8 -*-
from sqlalchemy import create_engine
from sqlalchemy.exc import OperationalError
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import scoped_session, sessionmaker, relationship
engine = create_engine('sqlite://', convert_unicode=True)
Base = declarative_base()
Base.metadata.bind = engine
Session = sessionmaker(autocommit=False, autoflush=False, bind=engine)
session = scoped_session(Session)
class Account(Base):
__tablename__ = 'accounts'
id = Column(Integer, primary_key=True)
first_name = Column(String(100), nullable=False)
last_name = Column(String(100), nullable=False)
age = Column(Integer(), nullable=True)Seed code.
# -*- coding: utf-8 -*-
from sqlalchemy_seed import (
create_table,
drop_table,
load_fixtures,
load_fixture_files,
)
from myapp.models import Base, session
def main():
path = '/path/to/fixtures'
fixtures = load_fixture_files(path, ['accounts.yaml'])
load_fixtures(session, fixtures)
if __name__ == '__main__':
main()Seed file.
- model: myapp.models.Account
id: 1
fields:
first_name: John
last_name: Lennon
age: 20
- model: myapp.models.Account
id: 2
fields:
first_name: Paul
last_name: McCartney
age: 21If you want idempotent, you can describe seed like followings.
Seed file.
- model: myapp.models.Account
fields:
id: 1
first_name: John
last_name: Lennon
age: 20
- model: myapp.models.Account
fields:
id: 2
first_name: Paul
last_name: McCartney
age: 21NEW BSD LICENSE.
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