How to programmatically handle a user before committing to database in Flask-User? -


simply put i'm creating user in flask-user want programmatically determine fields when user created. namely want assign user uuid4.

i've started following template: flask-user-starter-app

i've defined field need in models.py:

class user(db.model, usermixin): __tablename__ = 'users' id = db.column(db.integer, primary_key=true)  ...  public_uuid = db.column(db.string(32), nullable=false, unique=true)  ...

however seem unable find place can intercept user object , set user.public_uuid = uuid.uuid4().hex

i've tried declaring in form (though figured beforehand wouldn't work): class myregisterform(registerform): public_uuid = uuid.uuid4().hex

so end error public_uuid null when writing database.

where can handle user object before it's committed db?

you can specify default parameter of public_uuid column function.

def generate_uuid():      return uuid.uuid4().hex  class user(db.model, usermixin):      # ...      public_uuid = db.column(db.string(32), nullable=false, unique=true, default=generate_uuid)

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