1

Flask 视图，模板，蓝图.

https://www.cnblogs.com/wupeiqi/articles/7552008.html

 

1. 配置文件

 

from  flask import Flask
app =Flask(__name__)
# app.secret_key="addd"
# app.debug=True
app.config.from_object("settings.ProductionConfig")  #引入settings文件.

print(app.config["DEBUG"])

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

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

打印结果为

False

 

 

settings 文件

SECRET_KEY ="SDADFADF"
DEBUG=True

class Config(object):
    DEBUG=True
    SECRET_KEY="ADFADF"

class ProductionConfig(Config):
    DEBUG=False

class TestingConfig(Config):
    Testing= True

 

2.路由

 

 

endpoint

 

@app.route("/order",endpoint="n2")
def order():
    print(url_for("n2"))
    print(url_for("n2"))
    return "user"

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

　　输出结果：

127.0.0.1 - - [07/Sep/2018 17:41:19] "GET /order HTTP/1.1" 200 -
/order
/order

 

不写endpoint 默认是他的函数名称。

 



@app.route("/index")  #默认传递字符串类型
def index(nid,num):
    print(nid)
    return "index"

@app.route("/order")
def order():
    print(url_for("order"))
    print(url_for("index"))
    print(url_for("index"))
    return "user"



@app.route("/xx1111",)
def xx():
    print(url_for("xx"))
    print(url_for("index"))
    print(url_for("order"))
    return "user"




 


打印结果：




127.0.0.1 - - [07/Sep/2018 17:56:00] "GET /xx1111 HTTP/1.1" 200 -
/xx1111
/index
/order




 


 marksafe功能：


 




 


 


 


 


全局功能：


 


 


 


 






 


 


flash


 




 


 


蓝图


 


设置.




from flask import Flask
from .views.account import  bpaccount
from .views.code import bpcode
app = Flask(__name__)
app.config.from_object("settings.TestingConfig")

def create_app():
    app=Flask(__name__)
    app.config.from_object("settings.DevelopmentConfig")

    app.register_blueprint(bpaccount)
    app.register_blueprint(bpcode)
    return app




 


settings




class Config(object):
    DEBUG =False
    SECRET_KEY="ADAFA"
class ProductionConfig(Config):
    DEBUG = False

class DevelopmentConfig(Config):
    DEBUG = False

class TestingConfig(Config):
    TESTING=True




 


manage




from zzy import create_app
app =create_app()
if __name__ == '__main__':
    app.run()





　　


code 视图


 




from flask import  Blueprint
bpcode =Blueprint("whq",__name__)

@bpcode.route("/code")
def hailong():
    return "海龙"

@bpcode.route("/lizhanqing")
def lizhanqing():
    return "李占青"




 


 


account视图


 




from flask import  Blueprint,render_template
bpaccount =Blueprint("xzx",__name__)

@bpaccount.route("/login")
def hailong():
    return render_template("login.html")

@bpaccount.route("/logout")
def lizhanqing():
    return "登出"




 


login.html




<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>    用户登录</h1>

</body>
</html>




 


 


before request 有app级别的，也有蓝图级别的


先说app级别的：




from flask import Flask,session,request,redirect
from .views.account import  bpaccount
from .views.code import bpcode
app = Flask(__name__)
app.config.from_object("settings.TestingConfig")

def auth():
    if request.path=="/login":
        return None
    user_info =session.get("user_info")
    if user_info:
        return None

    return redirect("/login")

def create_app():
    print(66666666666)
    app=Flask(__name__)
    app.config.from_object("settings.DevelopmentConfig")

    app.register_blueprint(bpaccount)
    app.register_blueprint(bpcode)

    app.before_request(auth)
    # app级别的在登录
    # @app.before_request
    # def check_login():
    #         print("checklogin")
    return app





　　


 


蓝图级别的


account 视图


 




from flask import  Blueprint,render_template
bpaccount =Blueprint("xzx",__name__)

@bpaccount.before_request
def check_login():
    print("before request")

@bpaccount.route("/login")
def hailong():
    return render_template("login.html")





　　


code视图




from flask import  Blueprint
bpcode =Blueprint("whq",__name__)

@bpcode.before_request
def check_login():
    print("before1111111111check")

@bpcode.route("/code")
def hailong():
    return "海龙"




 


 




 


 


1. 蓝图做目录结构的划分。


2.蓝图中应用before_request应用


3.蓝图做url的划分.


 


 


url_prefix url前添加前缀  有点像Django的include




 app.register_blueprint(bpaccount,url_prefix="/user")
    app.register_blueprint(bpcode,url_prefix="/user")




 




 


 


url_for 反向解析，像是django的revers


 




from flask import  Blueprint,render_template,url_for
bpaccount =Blueprint("xzx",__name__)

@bpaccount.before_request
def check_login():
    print("before request")

@bpaccount.route("/login")
def hailong():
    print(url_for("xzx.hailong"))
    print(url_for("xzx.lizhanqing"))
    print(url_for("whq.hailong"))
    return render_template("login.html")

@bpaccount.route("/logout")
def lizhanqing():
    return "登出"




结果：


 




/login
/logout
/code






 


 


 


staticfiles and templates




 






            

            
posted @ 
2018-09-07 20:33 
萌哥-爱学习 
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