用flask进行web开发

经理管理一个餐厅，推出每天都有特色菜的营销模式。他想根据一周中的每一天有一种特色菜。

客人想知道当天的特色菜是什么。另外再添加一个介绍页面。bios路径下，显示餐厅主人，厨师，服务生的简介。

python文件同级目录下创建templates，把所有模板都保存在这里。

厨师将当前特色菜品存储在一个json文件中。

{"monday":"烘肉卷配辣椒酱",

"tuesday":"Hamburger",

"wednesday":"扣肉饭",

"thursday":"泡菜锅",

"friday":"汉堡",

"saturday":"Pizza",

"sunday":"肥牛烧"}

　　把餐厅主任，厨师，服务生的介绍也保存在一个json文件中。

{"owner":"餐厅的主人",

"cooker":"帅帅的厨师",

"server":"美丽可爱漂亮大方的服务生"}

python代码：datetime对象带有weekday函数，返回数字（0,1,2……）代表星期几

from flask import Flask

from flask import render_template

app = Flask(__name__)

import json

from datetime import datetime

today = datetime.now()

days_of_week = ('monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday')

weekday = days_of_week[today.weekday()]

def get_specials():

    try:

        f = open("special_weekday.json")

        specials = json.load(f)

        f.close()

    except IOError:

        print "The file don\'t exist, Please double check!"

        exit()

    return specials[weekday]

@app.route('/')

def main_page():

    return render_template('base.html', weekday = weekday, specials = get_specials())

def get_bios():

    try:

        f = open("info.json")

        bios = json.load(f)

        f.close()

    except IOError:

        print "The file don\'t exist, Please double check!"

        exit()

    return bios

owner = get_bios()['owner']

cooker = get_bios()['cooker']

server = get_bios()['server']

@app.route('/bios/')

def bios_page():

    return render_template('bios.html', owner = owner, cooker = cooker, server = server)

if __name__ == '__main__':

    app.run()

html文件，显示特色菜

<!DOCTYPE html>

<html>

<head>

    <title></title>

</head>

<body>

<p>

    today is {{ weekday }}, and special is {{ specials }}

</p>

</body>

</html>

显示餐厅人员介绍

<!DOCTYPE html>

<html>

<head>

    <title>info</title>

</head>

<body>

<p>The owner is a {{ owner }}</p>

<p>The cooker is a {{ cooker }}</p>

<p>The server is a {{ server }}</p>

</body>

</html>

关于flask的更多知识：http://flask.pocoo.org/docs

巴特西

用flask进行web开发

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