class LoginForm (Form):


    username = TextField("Username")
    password = PasswordField("Password")
    submit = SubmitField("Login")

    access_user = User.query.filter_by(email = username.data).first()

    def validate_username(self,username):

        if access_user is None:
            raise ValidateError, "Invalid Username"

    def validate_password(self,password):
        condition = check_password_hash(access_user.password, password)
        if not condition:
            raise ValidateError, "Invalid Password"