| 3586 | from sqlalchemy import TypeDecorator |
| 3587 | |
| 3588 | class EvalsNull(TypeDecorator): |
| 3589 | impl = String(50) |
| 3590 | cache_ok = True |
| 3591 | cache_ok = True |
| 3592 | |
| 3593 | should_evaluate_none = True |
| 3594 | |
| 3595 | def process_bind_param(self, value, dialect): |
| 3596 | if value is None: |
| 3597 | value = "nothing" |
| 3598 | return value |
| 3599 | |
| 3600 | Table( |
| 3601 | "test", |