Created
April 6, 2021 13:43
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[SQLAlchemy ORM Pretty Repr] #orm #sqlalchemy
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| from sqlalchemy.ext.declarative import declarative_base | |
| Base = declarative_base() | |
| # monkey-patch a nice __repr__ method onto the Base class. | |
| def _niceRepr(self): | |
| """ | |
| Nicely format class name and column values. | |
| Looks up the inheritance hierarchy for inherited columns and displays those too. | |
| """ | |
| attrs = [] | |
| for cls in [self.__class__] + list(self.__class__.__mro__): | |
| if not hasattr(cls, "__table__"): break | |
| for key in cls.__table__.columns.keys(): | |
| if key not in attrs: | |
| attrs.append(key) | |
| return "<{}: {}>".format( | |
| self.__class__.__name__, | |
| ", ".join(["{}={}".format(attr, repr(getattr(self, attr))) for attr in attrs]) | |
| ) | |
| Base.__repr__ = _niceRepr |
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