peewee save changed fields only

Question

I have this model in peewee:

class User(Model):
    username = CharField()
    password = CharField()
    
    class Meta:
        database = db

I change password and save the model like this:

u = User.get()
u.password = 'newpassword'
u.save()

It update both username and password but i want to update password only.

Answer 1

Enable only_save_dirty meta option and call save() like before, peewee will save dirty fields only.

Definition:

class User(Model):
    username = CharField()
    password = CharField()
    
    class Meta:
        database = db
        only_save_dirty = True

Usage:

u = User.get()
u.password = 'newpassword'
u.save()  # username will not updated in DB