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‎ClassExamples/PJ128_AIML6m_Jan21/flask/Flask-sqlite-UserMgt/README.md‎

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# Flask-sqlite
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Basic Flask User Signup and Login Template with SQLite Database

‎ClassExamples/PJ128_AIML6m_Jan21/flask/Flask-sqlite-UserMgt/app.py‎

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# ===========
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# Imports
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# ===========
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from flask import Flask, render_template, request, redirect, url_for, jsonify
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import sqlite3 as sql
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from flask_cors import CORS, cross_origin
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# ===================
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# Flask instance
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# ===================
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app = Flask(__name__)
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# ======================
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# Allow Cross Origin
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# ======================
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@app.after_request # blueprint can also be app~~
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def after_request(response):
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header = response.headers
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header['Access-Control-Allow-Origin'] = '*'
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return response
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# ==================================
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# Insert data in database (SIGNUP)
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# ==================================
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def insertUser(username, email, password, contact):
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con = sql.connect("test.db")
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cur = con.cursor()
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phone = int(contact)
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query = ("""INSERT INTO USERS
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(username,email,password,contact)
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VALUES ('%s','%s','%s',%d)""" %
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(username, email, password, phone))
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cur.execute(query)
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con.commit()
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con.close()
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# =====================================
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# Validating data in database (LOGIN)
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# =====================================
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def validUser(email, password):
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con = sql.connect("test.db")
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cur = con.cursor()
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query = ("""SELECT * FROM USERS
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where email = '%s' and password = '%s'
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""" %
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(email, password))
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cur.execute(query)
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data = cur.fetchall()
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con.close()
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return data
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# ===================
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# Flask Routing
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# ===================
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@app.route('/')
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def home():
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return "go at /signin or /signup"
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# Login page
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@app.route('/signin/', methods=['GET', 'POST'])
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def login():
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if request.method == 'POST':
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rd = validUser(request.form['email'], request.form['password'])
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if rd:
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return "Sucessful Login"
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else:
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return "UnSucessful login"
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else:
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return render_template('index2.html')
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# Signup page
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@app.route('/signup/', methods=['GET', 'POST'])
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def signup():
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if request.method == 'POST':
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username = request.form['username']
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email = request.form['email']
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password = request.form['password']
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contact = request.form['contact']
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insertUser(username, email, password, contact)
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return redirect(url_for('login'))
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else:
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return render_template('index.html')
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# api json
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@app.route('/sum', methods=['GET','POST'])
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def sum():
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sum = 0
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a = int(request.args.get('a'))
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b = int(request.args.get('b'))
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sum = a+b
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return jsonify(sum)
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# Always at end of file !Important!
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if __name__ == '__main__':
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app.secret_key = 'SURAJ_SECRET_KEY'
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app.debug = True
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app.run(host='0.0.0.0', port=5000)
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‎ClassExamples/PJ128_AIML6m_Jan21/flask/Flask-sqlite-UserMgt/database.py‎

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# ===========
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# Imports
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# ===========
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import sqlite3 as sql
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# ========================
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# Connecting to database
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# ========================
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conn = sql.connect("test.db")
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cur = conn.cursor()
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# =================
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# Query execution
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# =================
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query = ('''CREATE TABLE USERS2
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(username TEXT NOT NULL,
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email TEXT Primary key,
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password TEXT NOT NULL,
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contact INT);''')
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cur.execute(query)
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# ================================
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# Closing connection to database
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# ================================
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conn.close()

‎ClassExamples/PJ128_AIML6m_Jan21/flask/Flask-sqlite-UserMgt/templates/demo.html‎

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‎ClassExamples/PJ128_AIML6m_Jan21/flask/Flask-sqlite-UserMgt/templates/index.html‎

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<!DOCTYPE html>
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<html lang="en" >
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<head>
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<meta charset="UTF-8">
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<title>Signup Form</title>
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<style type="text/css">
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form > input{
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margin: 10px;
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}
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</style>
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</head>
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<body>
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<div class="body"></div>
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<center style="height: 70%;">
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<div class="bo">
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<div class="grad"></div>
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<div class="header">
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<div style="width: auto;">Demo User Mgt</div>
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</div>
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<br>
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<div class="login">
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<form action="/signup/" method="post">
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<input type="text" placeholder="username" name="username"><br>
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<input type="email" placeholder="email" name="email"><br>
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<input type="password" placeholder="password" name="password"><br>
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<input type="tel" placeholder="contact-no" name="contact"><br>
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<input type="submit" value="Signup">
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</form>
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</div>
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</div>
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</center>
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</body>
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</html>

‎ClassExamples/PJ128_AIML6m_Jan21/flask/Flask-sqlite-UserMgt/templates/index2.html‎

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<!DOCTYPE html>
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<html lang="en" >
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<head>
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<meta charset="UTF-8">
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<title>Signup Form</title>
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<style type="text/css">
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form > input{
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margin: 10px;
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}
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</style>
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</head>
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<body>
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<div class="body"></div>
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<center style="height: 70%;">
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<div class="bo">
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<div class="grad"></div>
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<div class="header">
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<div style="width: auto;">Demo User Mgt</div>
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</div>
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<br>
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<div class="login">
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<form action="/signin/" method="post">
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<input type="email" placeholder="email" name="email"><br>
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<input type="password" placeholder="password" name="password"><br>
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<input type="submit" value="Login">
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</form>
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<a href="{{url_for('signup')}}">Signup</a>
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</div>
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</div>
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</center>
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</body>
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</html>

‎ClassExamples/PJ128_AIML6m_Jan21/flask/Flask-sqlite-UserMgt/test.db‎

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