graphene/examples/flask_sqlalchemy/database.py

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2016-01-23 08:44:41 +03:00
from sqlalchemy import create_engine
from sqlalchemy.orm import scoped_session, sessionmaker
from sqlalchemy.ext.declarative import declarative_base
engine = create_engine('sqlite:///database.sqlite3', convert_unicode=True)
db_session = scoped_session(sessionmaker(autocommit=False,
autoflush=False,
bind=engine))
Base = declarative_base()
Base.query = db_session.query_property()
def init_db():
# import all modules here that might define models so that
# they will be registered properly on the metadata. Otherwise
# you will have to import them first before calling init_db()
from models import Department, Employee
Base.metadata.drop_all(bind=engine)
Base.metadata.create_all(bind=engine)
department = Department(name='Informatics')
db_session.add(department)
db_session.add(department)
employee = Employee(name='Peter', department=department)
db_session.add(employee)
db_session.commit()