Cannot import MutableModelBase

[ejm4567]

Hi,

I was trying to use MutableModelBase as a parent class for my model and I am unable to import it from sqlalchemy_mutable.

Looking in both the constructor and model_shell.py I don't see MutableModelBase anywhere.

Here's my model:

import os, json
from datetime import datetime
from flask_appbuilder import Model
from flask_sqlalchemy import SQLAlchemy
import sqlalchemy.types as types
from sqlalchemy import create_engine
from sqlalchemy.sql import func
from sqlalchemy import Column, Integer, String, ForeignKey, DateTime
from sqlalchemy.orm import relationship, Mapped, declarative_base
from sqlalchemy.ext.hybrid import hybrid_property
from sqlalchemy.types import TypeDecorator, TEXT, VARCHAR
from sqlalchemy import MetaData
from sqlalchemy_mutable import Mutable, MutableModelBase

...

class VSODataSets(MutableModelBase, db.Model):
      __tablename__ = 'datasets'

      id: Mapped[int]                    = db.Column("id", db.Integer, primary_key=True)
      provider: Mapped[str]         = db.Column("provider", ForeignKey(VSORegistry.provider), index=True)
      datasets                               = db.Column("datasets", MutableList)

      created_on    = db.Column("created_on", db.DateTime(timezone=True), default=func.now())
      last_modified = db.Column("last_modified", db.DateTime(timezone=True), default=func.now(), onupdate=func.now())

      def __init__(self):
         self.datasets = Mutable()

Also, in your example is MutableType a placeholder for MutableDict, MutableList or MutableSet for example?

Thanks,

--Ed