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How Can I Efficiently Serialize SQLAlchemy Query Results to JSON?

Patricia Arquette
Release: 2024-11-29 20:56:11
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How Can I Efficiently Serialize SQLAlchemy Query Results to JSON?

Serialize SQLAlchemy Results to JSON: An Alternative Approach

While Django provides convenient serialization of ORM models to JSON, serializing SQLAlchemy query results to JSON can be a more challenging task. JSON encoders typically struggle to handle SQLAlchemy objects.

One potential solution, suggested by the question, is to use jsonpickle to encode the query object itself. However, this approach yields unsatisfactory results. Similarly, using json.dumps(items) leads to serialization errors due to the non-JSON-serializable nature of SQLAlchemy ORM objects.

An alternative approach is to manually convert the SQLAlchemy objects to dictionaries:

class User:
    def as_dict(self):
        return {c.name: getattr(self, c.name) for c in self.__table__.columns}
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This as_dict() method can then be used to serialize the User object:

user = User()
user_dict = user.as_dict()
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This approach is more flexible and allows for custom serialization logic based on the specific requirements of the application.

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