Notes:

1. redirect(url_for(endpoint_name))

2. instead of app.route('/foo'), create a class, methods that could be called at named as http requests, def get, def post, etc. Then routing using app.add_url_rule('/home/', view_func=homepage.as_view('homepage_endpoint')) in main

3. https://www.w3cschool.cn/flask/flask_http_methods.html tutorial on how to handle different http request

4. What about static files? We first create a static folder, containing all the static content Then use url_for() like this : url_for('static', filename = 'hello.js')

5. Get response using request, then pass as param to render_template https://www.w3cschool.cn/flask/flask_sending_form_data_to_template.html

6. Cookies are temp or perm data that stores during the session so the user can log in next time automatically, or save the current session data.

   from flask import Flask, make_response, request # 注意需导入 make_response
   
   app = Flask(__name__)
   
   @app.route("/set_cookies")
   def set_cookie():
       resp = make_response("success")
       resp.set_cookie("key", "stuff you wanna save",max_age=3600)
       return resp
   
   @app.route("/get_cookies")
   def get_cookie():
       cookie_1 = request.cookies.get("key")  # 获取名字为Itcast_1对应cookie的值
       return cookie_1
   
   @app.route("/delete_cookies")
   def delete_cookie():
       resp = make_response("del success")
       resp.delete_cookie("key")
   
       return resp
   
   if __name__ == '__main__':
       app.run(debug=True)
   

7. A smart way of organizing routing: https://www.w3cschool.cn/flask/flask-qcki3get.html

0