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@shinysu
Created June 12, 2021 11:27
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login_full_app
from flask import Flask, render_template, redirect, url_for, request, session, flash
from datetime import timedelta
from db_functions import get_password, insert_user
app = Flask(__name__)
app.secret_key = "123@abc"
app.permanent_session_lifetime = timedelta(minutes=5)
def set_session(email): #{"logged_in": True, "email"='[email protected]'}
session.permanent = True
session["logged_in"] = True
session["email"] = email
def reset_session():
if "logged_in" in session:
del session["logged_in"]
del session["email"]
def verify_login(email, password):
stored_password = get_password(email)
if len(stored_password): #[('1111,)]
if password == stored_password[0][0]:
set_session(email)
return redirect("/")
else:
flash("You've got a wrong password!")
return redirect("/")
else:
insert_user(email, password)
set_session(email)
return redirect("/")
@app.route("/login", methods=["GET", "POST"])
def login():
if request.method == "GET":
return render_template('login.html')
elif request.method == "POST":
email = request.form["email"]
password = request.form["password"]
verify_login(email, password)
return redirect(url_for('index'))
@app.route("/logout")
def logout():
reset_session()
flash("You've been logged out!!!")
return redirect("/")
@app.route("/")
def index():
if "logged_in" in session:
return render_template('welcome.html', email=session["email"])
else:
return redirect(url_for('login'))
if __name__ == '__main__':
app.run(debug=True)
<!DOCTYPE html>
<html lang="en">
{% include "header.html" %}
<body>
<h1> Programming club </h1>
<div class="container">
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
</div>
</div>
</nav>
{% block content %}{% endblock %}
</div>
</body>
</html>
import sqlite3
sql_query = """
CREATE TABLE IF NOT EXISTS users(
email TEXT PRIMARY KEY,
password TEXT NOT NULL
);
"""
def execute_query(sql_query):
with sqlite3.connect("login.db") as conn:
cur = conn.cursor()
result = cur.execute(sql_query)
conn.commit()
return result
if __name__ == '__main__':
execute_query(sql_query)
import sqlite3
def execute_query(sql_query):
with sqlite3.connect("login.db") as conn:
cur = conn.cursor()
result = cur.execute(sql_query)
conn.commit()
return result
def insert_user(email, password):
sql_query = "INSERT INTO users(email, password) VALUES('%s', '%s') " % (email, password)
execute_query(sql_query)
def get_password(email):
sql_query = "SELECT password FROM users WHERE email='%s' " % (email)
password = execute_query(sql_query).fetchall()
return password
if __name__ == '__main__':
#insert_user('[email protected]', '1111')
get_password('[email protected]')
<head>
<meta charset="UTF-8">
<title>login</title>
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous">
<link rel="stylesheet" href="{{url_for('static', filename='css/login.css')}}"
</head>
body{
font-size: 1em;
}
.error{
margin-left: 5vh;
color: red;
}
div{
margin: 5vh;
}
{% extends "base.html" %}
{% block content %}
<form action="#" method="POST">
<div class="row">
<div class="col-md-2">
<label for="email"> Enter your email id: </label>
</div>
<div class="col-md-4">
<input class="form-control" type="email" name="email">
</div>
</div>
<div class="row">
<div class="col-md-2">
<label for="password"> Enter your password: </label>
</div>
<div class="col-md-4">
<input class="form-control" type="password" name="password">
</div>
</div>
<div class="row">
<div class="col-md-2"></div>
<div class="col-md-2">
<button type="submit" name="submit">Login</button>
</div>
</div>
{% with messages = get_flashed_messages() %}
{% if messages %}
{% for message in messages %}
<div class="error">
{{ message }}
</div>
{% endfor %}
{% endif %}
{% endwith %}
</form>
{% endblock %}
{% extends "base.html" %}
{% block content %}
<h1> Welcome {{email}} </h1>
{% endblock %}
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