g对象

g对象

g对象就是一个容器，能够多次取值

from  flask import Flask,g,request

app = Flask(__name__)

@app.before_request
def be():
    #request.name="cxw is big"
    if request.path=="/login":
         g.name="cxw is big"

def set_g():
    g.name = "cxw is big"

@app.route("/")
def index():
    set_g()
    print("视图1",g.name)
    # print("视图2", g.name)
    return "ok"

@app.route("/login")
def login():
    print("login视图1", g.name)
    return "login"
@app.after_request
def af(response):
    print("after_request", g.name)
    return response



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