lib.py 文件源码

def login_required(func):
    """
    Decorator to require login and save URL for redirecting user after login
    """

    @wraps(func)
    def decorated_function(*args, **kwargs):
        """decorator args"""

        if not is_logged_in():
            # Save off the page so we can redirect them to what they were
            # trying to view after logging in.
            session['previously_requested_page'] = request.url

            return redirect(url_for('login'))

        return func(*args, **kwargs)

    return decorated_function