from flask import Flask, render_template, request,make_response,session,redirect,url_for
app = Flask(__name__)
app.secret_key = 'any random string'
@app.route('/')
def index():
if 'username' in session:
username = session['username']
return ('Logged in as ' + username + '<br>' +
"<b><a href = '/logout'>click here to log out</a></b>")
else:
return ("You are not logged in <br> <b><a href = '/login'>" + "click here to log in</a></b>")
@app.route('/login', methods = ['GET', 'POST'])
def login():
if request.method == 'POST':
session['username'] = request.form['username']
return redirect(url_for('index'))
else:
return render_template('new6.html')
@app.route('/logout')
def logout():
# remove the username from the session if it is there
session.pop('username', None)
return redirect(url_for('index'))
if __name__ == '__main__':
app.run(debug = True)
new6.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>12212</title>
</head>
<body>
<form action = "" method = "post">
<p><input type = text name = username></p>
<p><input type = submit value = Login></p>
</form>
</body>
</html>