Pylons, SQlite and autoincrementing fields

Question

Hey! Just started working with Pylons in conjunction with SQLAlchemy, and my model looks something like this:

from sqlalchemy import Column
from sqlalchemy.t         


        

Answer 1

Try including a __table_args__ attribute with the arguments you would pass to Table constructors in the traditional (non-declarative) data definition style, e.g.:

class Person(Base):
    __tablename__ = "person"
    __table_args__ = {'sqlite_autoincrement': True}

If you have to include several arguments, use this form instead (dict has to be last):

__table_args__ = (
    Unique('foo'),
    # ...
    {'sqlite_autoincrement': True}
)

From the Table configuration section of the Declarative SQLAlchemy documentation:

Table arguments other than the name, metadata, and mapped Column arguments are specified using the __table_args__ class attribute. This attribute accommodates both positional as well as keyword arguments that are normally sent to the Table constructor.