Flask--视图

Posted 2020-11-22 os-linux

视图

FBV

from flask import Flask, session

app = Flask(__name__)


@app.route("/index")
def index():
    return "ok"


if __name__ == '__main__':
    app.run()

CBV

from flask import Flask, views

app = Flask(__name__)

def t1(func):
    def inner(*args,**kwargs):
        print("before1")
        result = func(*args,**kwargs)
        print("after1")
        return result
    return inner

def t2(func):
    def inner(*args,**kwargs):
        print("before2")
        result = func(*args,**kwargs)
        print("after2")
        return result
    return inner

class Index(views.MethodView):
    methods = ["GET","POST"]
    decorators = [t1,t2]    # 执行额外的装饰器

    def get(self):
        print("get")
        return "GET"

    def post(self):
        print("post")
        return "POST"

app.add_url_rule("/index",view_func=Index.as_view("index"))
# 在CBV中不能使用装饰器形式的路由，只能使用上面这种；
# as_view("index")括号里的是别名；

if __name__ == '__main__':
    app.run()