Working without Flask_sqlalchemy

[phuicy]

So currently this plugin won't work without Flask-sqlalchemy. Specifically, if you sqlalchemy-utils.

Solution:
This section:

Flask-WhooshAlchemyPlus/flask_whooshalchemyplus.py

Line 255 in 1e7a79b

 # change the query class of this model to our own 

is changed to:

    # change the query class of this model to our own
    if hasattr(model, 'query_class'):
        if model.query_class is not flask_sqlalchemy.BaseQuery \
                and model.query_class is not _QueryProxy:
            print(model.query_class, _QueryProxy)
            model.query_class = type(
                'MultipliedQuery', (model.query_class, _QueryProxy), {}
            )
        else:
            model.query_class = _QueryProxy
    else:
        model.query_class = _QueryProxy