1.Flask 中的 CBV

        class Index(views.MethodView):

            # methods = ["POST"]

            # decorators = [war,nei]

            def get(self):

                return "I am Gay"

            def post(self):

                return "I am Les"

        app.add_url_rule("/index", endpoint="calss_index", view_func=Index.as_view(name="index"))

        as_view中的name 是在endpoint存在时作为 endpoint

    2.Flask中的插件 之 终于可以不用session  Flask-Session

        导入：

            from flask import Flask, session

            from flask_session import Session

            from redis import Redis

        配置：

            app.config["SESSION_TYPE"] = "redis"

            app.config["SESSION_REDIS"] = Redis(host="127.0.0.1",port=6379,db=5)

        替换：

            Session(app)

        使用：

            session["user"] = "aasdf"

            session.get("user")

    3.Flask中的插件 之 如果你不使用前后端分离的话，这东西很好用 WTForms

        from wtforms.fields import simple

        from wtforms import Form

        from wtforms import validators

        class LoginForm(Form):

            username = simple.StringField(

                label="用户名",

                validators=[

                    validators.DataRequired(message="数据不能为空"),

                    validators.Length(min=5, max=16, message="大于5小于16")

                ],

                render_kw={"class": "jinyinwangba"}

            )

        class Index(views.MethodView):

            def get(self):

                loginfm = LoginForm()

                return render_template("index.html", fm=loginfm)

            def post(self):

                loginfm = LoginForm(request.form)

                if not loginfm.validate():

                    return render_template("index.html", fm=loginfm)

                session["user"] = "I am jinyinwangba"

                return "I am Les"