Как показать значение JSON в Flask-Admin как отдельные поля?

Наконец-то нашел решение спустя несколько месяцев!

Variable = Base.classes.variables

class VariableView(ModelView):
    list_columns = ["variable", "value"]
    form_columns = ["variable", "value"]
    column_default_sort = ("variable", False)
    column_filters = ["variable"]
    column_sortable_list = ["variable"]
    column_searchable_list = ["variable"]
    column_formatters = {
        "variable": lambda view, context, model, name: model.variable.replace(
            "_", " "
        ).capitalize(),
    }
    def edit_form(self, obj):
        class VariableForm(FlaskForm):
            pass

        setattr(
            VariableForm,
            "variable",
            StringField("Variable", validators=[Optional()], default=obj.variable),
        )
        try:
            json_data = json.loads(obj.value)
            for key in json_data:
                setattr(
                    VariableForm,
                    key,
                    StringField(
                        key.capitalize(),
                        validators=[Optional()],
                        default=json_data[key],
                        ),
                    )
        except json.decoder.JSONDecodeError:
            setattr(
                VariableForm,
                "Value",
                StringField("Label", validators=[Optional()], default=obj.value),
            )
        return VariableForm(obj=obj)

    def on_model_change(self, form, model, is_created):
        # Update the model with the data from the form
        json_output = {}
        for field in form:
            if field.name == "value":
                return model
            if field.name != "variable" and field.name != "csrf_token":
                json_output[field.name] = field.data
        model.value = json.dumps(json_output)
        return model

admin.add_view(VariableView(Variable, user.session, name = "Variables"))