SQLAlchemyPanel: UnicodeDecodeError for binary data

[MartinSchmidt123]

Thanks for this great project. It is really helpful and simplifies the migration from django to fastapi.

I use SQLAlchemyPanel and have a mysql table with a binary column described by:

    filedata: Mapped[bytes] = mapped_column(LONGBLOB)

When updating this column with binary data, I receive the following error

UnicodeDecodeError: 'utf-8' codec can't decode byte 0x9d in position 15: invalid start byte

Traceback is

File "[..].venv/lib/python3.11/site-packages/debug_toolbar/panels/sqlalchemy.py", line 44, in after_execute
    self.add_query(str(context.engine.url), query)
  File "[..].venv/lib/python3.11/site-packages/debug_toolbar/panels/sql.py", line 110, in add_query
    self._queries.append((alias, jsonable_encoder(query)))
                                 ^^^^^^^^^^^^^^^^^^^^^^^
  File "[..].venv/lib/python3.11/site-packages/fastapi/encoders.py", line 289, in jsonable_encoder
    encoded_value = jsonable_encoder(
                    ^^^^^^^^^^^^^^^^^
  File "[..].venv/lib/python3.11/site-packages/fastapi/encoders.py", line 303, in jsonable_encoder
    jsonable_encoder(
  File "[..].venv/lib/python3.11/site-packages/fastapi/encoders.py", line 289, in jsonable_encoder
    encoded_value = jsonable_encoder(
                    ^^^^^^^^^^^^^^^^^
  File "[..].venv/lib/python3.11/site-packages/fastapi/encoders.py", line 318, in jsonable_encoder
    return ENCODERS_BY_TYPE[type(obj)](obj)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "[..].venv/lib/python3.11/site-packages/fastapi/encoders.py", line 59, in <lambda>
    bytes: lambda o: o.decode(),
                     ^^^^^^^^^^
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x9d in position 15: invalid start byte

A simplified example for a fastapi endpoint is

@router.get("/test_binary/")
def test_binary(session: Session = Depends(create_session)):
    
    import io
    import xlsxwriter
    xlb = io.BytesIO()
    workbook = xlsxwriter.Workbook(xlb)
    worksheet = workbook.add_worksheet("Test")
    worksheet.name = 'Worksheet'
    workbook.close()

    export = session.query(BinaryTable).filter([..]).first()
    export.filedata = xlb.getvalue()

    session.commit()

It seems that the bytes parameter cannot be logged.

Used versions:

• fastapi==0.111.0
• fastapi-debug-toolbar==0.6.3
• sqlalchemy==2.0.30
• xlsxwriter==3.2.0