Update the Data model

Question

I have Data Model (class) for example looking like this:

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(20), unique=True)
    password = db.Column(db.String(30))

I have a lot of records in this table now and I want to add a field, for example to save the email address.

I have searched the documentation and have not found a recommended way to do this. I have updated my MySql manually and added the field to the model and works most of the time if I declare the fields correctly.

Is there a "Best Practice" how to do this? Does SQLAlchemy have built in support to make updates to the table definition?

Answer 1

Short answer is "No".

But check out alembic.