Doubt in usage of polyfactory

[vickypalani]

Hi, I recently started working on a FastAPI project where I needed to create dummy data for a SQLAlchemy model that has a unique field. This is my code to implement it. 

class AsyncPersistenceHandler(AsyncPersistenceProtocol[T]):
    async def save(self, data: T) -> T:
        async with get_db_context() as session:
            session.add(data)
            await session.commit()

    async def save_many(self, data: List[T]) -> List[T]:
        async with get_db_context() as session:
            session.add_all(data)
            await session.commit()

class BaseFactory(SQLAlchemyFactory):
    """
    Base Factory
    """
    __is_base_factory__ = True
    __async_persistence__ = AsyncPersistenceHandler

class RoleTypeFactory(BaseFactory):
    """
    RoleType Factory
    """
    __model__ = neo_hire_models.RoleType

    id = Ignore()
    name = Faker().name()

When I try to create a batch like this, 

await RoleTypeFactory.create_batch_async(size=5)

I get an issue since the name field uses the same value for all the instances, thus triggering the UniqueConstraint error.      This is my SQLAlchemyModel for reference

class RoleType(SoftDeleteMixin, BaseModal):
    __tablename__ = "role_types"

    id = Column(Integer, primary_key=True)
    name = Column(String(255), unique=True, nullable=False)

 

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[Alc-Alc]

Can you try this?

from polyfactory import Use
class RoleTypeFactory(BaseFactory):
    """
    RoleType Factory
    """
    __model__ = neo_hire_models.RoleType

    id = Ignore()
    name = Use(lambda: Faker().name())

I would recommend name = Use(lambda: RoleTypeFactory.__faker__.name()) instead of creating your own faker