class LoginForm(model_form(User, base_class=Form, exclude=['first_name', 'last_name'],
field_args=User.get_field_args_login())):
"""
Class representing the form handling authentication in the admin area.
"""
def validate_username(self, field):
del field
user = self.get_user()
if user is None:
raise validators.ValidationError('Username does not exist.')
def validate_password(self, field):
del field
user = self.get_user()
if user is None:
return
if not check_password_hash(user.password, self.password.data):
raise validators.ValidationError('Password is invalid.')
def get_user(self):
return User.query.filter_by(username=self.username.data).first()
