Is there support for restricting registration to an allowed lists of emails?

[shiehn]

Hi there, I'm involved in developing an application which will have a private alpha phase. I would like to restrict registration to a specified list of email addresses. Does fastapi-users support this out of the box? If not, how might I extend it to do so? thanks!

[hgalytoby]

Hi there, I'm involved in developing an application which will have a private alpha phase. I would like to restrict registration to a specified list of email addresses. Does fastapi-users support this out of the box? If not, how might I extend it to do so? thanks!

You can either override the create method(https://github.com/fastapi-users/fastapi-users/blob/master/fastapi_users/manager.py#L110) from UserManager (https://github.com/fastapi-users/fastapi-users/blob/master/examples/sqlalchemy/app/users.py#L18):

async def create(
        self,
        user_create: schemas.UC,
        safe: bool = False,
        request: Optional[Request] = None,
) -> models.UP:
    """
    Create a user in the database.

    Triggers the on_after_register handler on success.

    :param user_create: The UserCreate model to create.
    :param safe: If True, sensitive values like is_superuser or is_verified
    will be ignored during the creation, defaults to False.
    :param request: Optional FastAPI request that
    triggered the operation, defaults to None.
    :raises UserAlreadyExists: A user already exists with the same e-mail.
    :return: A new user.
    """
    # Add logic here to restrict specific email addresses. 
    return await super().create(user_create=user_create, safe=safe, request=request)

Alternatively, you can perform validation using Pydantic:

Pydantic v2: https://docs.pydantic.dev/2.4/concepts/validators/#field-validators
Pydantic v1: https://docs.pydantic.dev/1.10/usage/validators/

https://github.com/fastapi-users/fastapi-users/blob/master/examples/sqlalchemy/app/schemas.py

[shiehn]

Thank you!