WTForms-SQLAlchemy is a fork of the wtforms.ext.sqlalchemy package from WTForms. The package has been renamed to wtforms_sqlalchemy but otherwise should function the same as wtforms.ext.sqlalchemy did.

to install:

pip install WTForms-SQLAlchemy

Python 2.7, 3.5, 3.6, 3.7 & 3.8 are supported.

An example using Flask is included in examples/flask.

1. Provide SelectField integration with SQLAlchemy models
   • wtforms_sqlalchemy.fields.QuerySelectField
   • wtforms_sqlalchemy.fields.QuerySelectMultipleField
2. Generate forms from SQLAlchemy models using wtforms_sqlalchemy.orm.model_form

The reasoning for splitting out this package is that WTForms 2.0 has deprecated all its wtforms.ext.<library> packages and they will not receive any further feature updates. The authors feel that packages for companion libraries work better with their own release schedule and the ability to diverge more from WTForms.