Fastapi alias for url/router/endpoint (set same handler for them)

Question

How I can make alias (call the same handler) for similar url/routers like https://myapi/users/5 and https://myapi/users/me (my id placed in token and it's 5).

    @router.get("/{employee_id}}", status_code=200, response_model=schemas.EmployeeOut)
    async def get_employee(
            employee_id: int = Path(default=..., ge=0, description='Id получаемого сотрудника.', example=8),
            token: str = Depends(config.oauth2_scheme),
            postgres_session: AsyncSession = Depends(database.get_db)):
        try:
            token_payload = services.get_token_payload(token=token)
            if token_payload['role'] in (config.OPERATOR_ROLE, config.OPERATOR_ROLE, config.CLINIC_ROLE):
                return (await postgres_session.execute(statement=models.employees.select().where(
                    models.employees.c.id == employee_id))).fetchone()
            else:
                raise config.known_errors['forbidden']
        except Exception as error:
            services.error_handler(error)
    
    # Just as example!
    @router.get("/me}", status_code=200, response_model=List[schemas.TicketOut])
    async def get_me(
            token: str = Depends(config.oauth2_scheme)):
        token_payload = services.get_token_payload(token=token)
        get_employee(employee_id=token_payload['sub'])

These functions is almost identical, the one difference is that in the second function no path parameter employee_id, but it's anyway are present in the token.

You can wonder why you need me url - it's just for convenience

Answer 1

It is possible. You can specify multiple decorators with API path specifications. If you look closely at, say, router.post implementation, you will see, that the decorator returns not the wrapped function, but the original function, so you can safely pass it to another decorator.

Something like this:

@router.post('/api/action1')
@router.post('/api/action2')
def do_action():
  pass