auth_user = db.define_table(
   'auth_user',
    db.Field('first_name', length=128,default=''),
    db.Field('last_name', length=128,default=''),
    db.Field('email', length=128,default=''),#,unique=True),
    db.Field('twitter_id', length=128,default=None),#,unique=True),
    db.Field('facebook_id', length=128,default=None),#,unique=True),
    db.Field('password', 'password', readable=False),
    db.Field('registration_key', length=128, writable=False,readable=False,default=''))

auth_user.first_name.requires = IS_NOT_EMPTY()
auth_user.last_name.requires = IS_NOT_EMPTY()
auth_user.password.requires = [IS_LENGTH(minsize=6,
                            error_message="We're sorry.  Please " + \
                            "enter a password with at least six " + \
                            "characters."),
                           CRYPT()]
auth_user.email.requires = [IS_EMAIL(error_message=T("Please enter a valid email address.")),
                     IS_NOT_IN_DB(db, 'auth_user.email',
                     error_message=T("We're sorry. " + \
                     "That email address already exists in our system. " + \
                     "Please login or choose another email address."))]
auth_user.registration_key.default = ''

auth.define_tables()