def user_exists(id):
user_exists = False
for user in User.select():
user_id = "{}{}".format(user.id, user.salt)
if user_id == str(id):
user_exists = True
return user_exists
def email_exists(form, field):
if User.select().where(User.email == field.data).exists():
raise ValidationError("Email already in use.")
def username_in_use(form, field):
if User.select().where(User.username == field.data).exists():
raise ValidationError("Username already in use.")
def username_exists(form, field):
if not User.select().where(User.username == field.data).exists():
raise ValidationError("User does not exist.")