SQLAlchemy boolean value is None

I have this table in my Pyramid app

class User(Base):
    __tablename__ = 'users'
    id = Column(Integer, primary_key=True)
    .....
    is_active = Column(Boolean, unique=False)
    def __init__(self, name, raw_password):
        is_active = True

When I did my test, it said is_active is None.

def test_register_user(self):
    user = User('user1', '1234')
    self.sess.add(user)
    self.sess.flush()

    #print user
    #self.assertTrue(user.is_active, True)
    user_db_record = self.sess.query(User).filter_by(name=user.name).first()
    self.assertEqual(user_db_record.is_active, True)

From my integration log I see when we are creating the row, is_active is set to None. Why?

You have to set a default value otherwise None/NULL is used:

is_active = Column(Boolean, unique=False, default=True)

You wanted to do this in __init__ but you used is_active = True (a local variable) instead of self.is_active = True.

If you're using Flask-SQLAlchemy, you can use this command to create a server side default.

from sqlalchemy.sql import expression
active = db.Column(db.Boolean, server_default=expression.true(), nullable=False)

This will create a default value on the database so anyone can write to it and the DB will have the default value.

is_active = Column(Boolean, server_default='t', default=True)

SQLAlchemy boolean value is None

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