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Example Code
#!/usr/bin/env python3
from typing import Optional, Any
import sqlalchemy
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.ext.mutable import MutableDict, MutableSet
from sqlalchemy.orm import sessionmaker
from sqlalchemy import JSON, Column
from sqlmodel import SQLModel, Field, create_engine
Session = sessionmaker()
Base = declarative_base()
class BadTrackBase(SQLModel):
custom: dict[str, Any] = Field(
sa_column=Column(MutableDict.as_mutable(JSON(none_as_null=True))), default={}
)
class BadTrack(BadTrackBase, table=True):
id: Optional[int] = Field(default=None, primary_key=True)
class Track(SQLModel, table=True):
id: Optional[int] = Field(default=None, primary_key=True)
custom: dict[str, Any] = Field(
sa_column=Column(MutableDict.as_mutable(JSON(none_as_null=True))), default={}
)
engine = create_engine("sqlite:///:memory:")
Session.configure(bind=engine)
SQLModel.metadata.create_all(engine)
session = Session()
good_track = Track(id=1, custom={"test": "good"})
bad_track = BadTrack(id=1, custom={"test": "bad"})
session.add(good_track)
session.add(bad_track)
session.commit()
good_track.custom["test"] = "changed"
bad_track.custom["test"] = "changed"
assert good_track in session.dirty
assert bad_track in session.dirtyDescription
When setting a field to one of the fields supported by sqlalchemy mutation tracking, it seems the mutation tracking isn't working as intended. I attached the above code sample to illustrate what I mean. The assertions on the bottom of the script should pass under normal circumstance.
Operating System
Linux
Operating System Details
No response
SQLModel Version
0.08
Python Version
3.9.13
Additional Context
No response