#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
@ __file_name__ = 'decorators.py'
@ __author__ = 'Empathy'
@ __time__   = '2017/9/27 0:45'
"""

from functools import wraps
from flask import session,render_template,redirect,url_for


# 定义一个登录现在的装饰器
def login_require(func):
    @wraps(func)
    def wrapper(*args,**kwargs):
        if session.get('user_id'):
            return func(*args, **kwargs)
        else:
            return redirect(url_for('login'))
    return wrapper


# 高级函数-闭包，函数嵌套，返回返回对象本身