flask 学习app代码备份

#!/usr/bin/python # -*- coding: UTF-8 -*- from flask import Flask, url_for from flask import request from flask_script import Manager from flask import render_template from threading import Thread import requests import json from flask_bootstrap import Bootstrap from flask_moment import Moment from flask_wtf import Form from wtforms import StringField, SubmitField from wtforms.validators import Required, DataRequired from flask import session from flask import redirect from flask import flash from datetime import datetime from flask_sqlalchemy import SQLAlchemy import os basedir = os.path.abspath(os.path.dirname(__file__)) app = Flask(__name__) manager = Manager(app) Bootstrap(app) Moment(app) ########################################DB config start################################################################ app.config['SQLALCHEMY_DATABASE_URI'] ='sqlite:///' + os.path.join(basedir, 'data.sqlite') app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN'] = True db = SQLAlchemy(app) ########################################DB config end################################################################ app.config['SECRET_KEY'] = 'hard to guess string' @app.route("/", methods=["GET"]) def index(): return '<h1>Hello World!</h1>' # 动态路由 @app.route("/user/<username>") def get_username(username): return '<h1>Hello, %s</h1>' % username # 得到请求参数: @app.route("/getrequest") def get_request_arg(): headers = request.headers user_agent = request.headers.get('User-Agent') return '<h1>geted request args is : %s </h1>' % user_agent @app.route("/getpostdata", methods=['GET', 'POST','GET']) def get_post_data(): post_data = request.json # post_data = request.form return "<h1>post data is :%s</h1>" % post_data # get index.html @app.route("/get_index_html") def get_index(): return render_template("index.html") # get user.html and argument 动态路由并获取参数给模板 @app.route("/get_user_html/<user>") def get_user(user): return render_template("user.html", name=user) @app.route("/get_list_html") def get_list(): item_list = ["python","java","c++","c#","django","flask"] return render_template("list.html", lists=item_list) @app.route("/get_dict_html") def get_dict(): dict = {"name":"panxueyan", "age":30,"address":"beijing"} # f = client_for_flask.post_data return render_template("dict.html", dicts=dict) def test_mehod(): # r = requests.get("http://127.0.0.1:9000/getrequest") # print(r.text) # print("call done") # return "donee"  url = "http://127.0.0.1:9000/getpostdata" data = {"result": "ok"} data = json.dumps(data) r = requests.post(url, json=data) print(r.text) print("hello call method") # 利用多线程 把函数方法传入模板执行 @app.route("/call_method_html") def call_method(): t = Thread(target=test_mehod) method = t.start return render_template("call_method.html", methods=method) # 过滤器在模板中的使用 @app.route("/filter_useage") def filter_use(): my_dict = {"name":"panxueya\n","age":30,"address":"<h1>beijing</h1>","daxieshouzimu":"this is xiaoxie","quandaxie":"DONE","qukongge":" hha "} return render_template("filter.html", dicts=my_dict) # 宏在模板中的使用宏相似于 Python 代码中的函数 @app.route("/hong_useage") def hong_use(): item_list = ["python", "java", "c++", "c#", "django", "flask"] return render_template("hong.html", comments=item_list) #把宏保存为html模板，而后在其余模板中导入使用 @app.route("/hone_template_useage") def hone_template_use(): item_list = ["python", "java", "c++", "c#", "django", "flask"] return render_template("test_macros_template.html", comments=item_list) #测试模板继承 base是母模板 son是继承base.html @app.route("/son_use_father_template") def son_use_father(): return render_template("son.html") @app.route("/test_bootstrap/<name>") def get_bootstrap(name): return render_template("test_bootstrap.html", name=name) @app.errorhandler(404) def page_not_found(e): return render_template('404.html'), 404 @app.route("/get_some_url") def get_soome_url(): url = url_for("son_use_father", _external=True) print(url) return render_template("get_url_template.html",urls=url) @app.route("/get_datetime") def get_datetime(): return render_template("test_datetime.html", current_time=datetime.utcnow()) ####################################table model start################################################# class NameForm(Form): name = StringField('What is your name?', validators=[DataRequired()]) submit = SubmitField('Submit') class Role(db.Model): __tablename__ = 'roles' id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(64), unique=True) users = db.relationship('User', backref='role') def __repr__(self): return '<Role %r>' % self.name class User(db.Model): __tablename__ = 'users' id = db.Column(db.Integer, primary_key=True) username = db.Column(db.String(64), unique=True, index=True) role_id = db.Column(db.Integer, db.ForeignKey('roles.id')) def __repr__(self): return '<User %r>' % self.username #######################################table model end##############################################  @app.route("/test_form",methods=["GET","POST"]) def use_form(): name = None form = NameForm() if form.validate_on_submit(): # # name = form.name.data # session['name'] = form.name.data # # form.name.data = '' # return redirect(url_for('use_form'))  old_name = session.get('name') if old_name is not None and old_name != form.name.data: flash('Looks like you have changed your name!') session['name'] = form.name.data return redirect(url_for('use_form')) return render_template('form.html', form=form, name=session.get('name')) if __name__ == "__main__": app.debug = True # app.run(host="0.0.0.0", port=8080) manager.run()