Added MySql DB and some frontend.

week-0/day-3/my_todo_app/.vscode/settings.json

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+{
+    "python.pythonPath": "venv/bin/python3"
+}

week-0/day-3/my_todo_app/todo_app/.vscode/settings.json

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+{
+    "python.pythonPath": "/bin/python3"
+}

week-0/day-3/my_todo_app/todo_app/__init__.py

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+import os
+
+from flask import Flask, request, render_template, redirect, url_for
+
+from . import db
+
+
+def create_app(test_config=None):
+    # create and configure the app
+    app = Flask(__name__, instance_relative_config=True)
+
+    try:
+        os.makedirs(app.instance_path)
+    except OSError:
+        pass
+
+    db.initialize_app_db(app)
+
+    def select_todos(name):
+        db1 = db.Database(app)
+        data = db1.get_todo(name)
+        print("Todos for", name, ": ", data)
+        return data
+
+    def insert_todo(name, todo):
+        db1 = db.Database(app)
+        db1.add_todo(name, todo)
+        return
+
+    def add_todo_by_name(name, todo):
+        # call DB function
+        insert_todo(name, todo)
+        return
+
+    def get_todos_by_name(name):
+        return select_todos(name)
+
+    @app.route('/')
+    def index():
+        return render_template('todo_view.html')
+
+    @app.route('/todos')
+    def todos():
+        name = request.args.get('name')
+        print('---------')
+        print(name)
+        print('---------')
+
+        person_todo_list = get_todos_by_name(name)
+        if person_todo_list == None:
+            return render_template('404.html'), 404
+        else:
+            return render_template('todo_view.html', todos=person_todo_list)
+
+    @app.route('/add_todos', methods=['POST'])
+    def add_todos():
+        name = request.form.get('name')
+        todo = request.form.get('todo')
+        add_todo_by_name(name, todo)
+        return redirect(url_for('todos', name=name))
+        # return
+
+    return app

week-0/day-3/my_todo_app/todo_app/db.py

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+import pymysql
+
+def initialize_app_db(app):
+    db1 = Database(app)
+    db1.cur.execute("DROP TABLE IF EXISTS user")
+    f = open("todo_app/schema.sql", "r")
+    sqlCommands = f.read().split(';')
+    db1.cur.execute("DROP TABLE IF EXISTS user")
+    for command in sqlCommands:
+        try:
+            print("Executing: ", command)
+            db1.cur.execute(command)
+        except:
+            print("Skipped: ", command)
+
+    db1.con.commit()
+
+
+class Database:
+    def __init__(self, app):
+        host = "localhost"
+        user = "manjeet"
+        password = "Manjeet@12345"
+        db = "flask_app"
+        self.con = pymysql.connect(host=host, user=user, password=password, db=db,
+                                   cursorclass=pymysql.cursors.DictCursor)
+        self.cur = self.con.cursor()
+
+    def get_todo(self, name):
+        sql_get_query = """ SELECT todo from `user`
+                          WHERE username = (%s)"""
+
+        self.cur.execute(sql_get_query, (name))
+        result = self.cur.fetchall()
+        just = []
+        for item in result:
+            just.append(item['todo'])
+        print("-----------------")
+        print(just)
+        print("-----------------")
+        return just
+
+    def add_todo(self, name, todo):
+        sql_insert_query = """ INSERT INTO `user`
+                          (`username`, `todo`) VALUES (%s,%s)"""
+        print("Want to insert -> ", (name, todo))
+        self.cur.execute(sql_insert_query, (name, todo))
+        self.con.commit()

week-0/day-3/my_todo_app/todo_app/schema.sql

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+DROP TABLE IF EXISTS user;
+
+create table user(
+    username VARCHAR(100) NOT NULL,
+    todo VARCHAR(100) NOT NULL,
+    PRIMARY KEY(username,todo));
+
+INSERT INTO user(username,todo) VALUES ('ayush','eat');
+INSERT INTO user(username,todo) VALUES ('ayush','read');
+INSERT INTO user(username,todo) VALUES ('ayush','sleep');
+INSERT INTO user(username,todo) VALUES ('raj','code');
+INSERT INTO user(username,todo) VALUES ('raj','coffee');
+INSERT INTO user(username,todo) VALUES ('raj','play');
+INSERT INTO user(username,todo) VALUES ('depo','sleep');
+INSERT INTO user(username,todo) VALUES ('depo','brush');
+INSERT INTO user(username,todo) VALUES ('depo','run');

week-0/day-3/my_todo_app/todo_app/templates/404.html

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+User Not Found