def index():
form = Login()
if form.validate_on_submit():
session['username'] = form.username.data
session['room'] = form.room.data
return redirect(url_for('chat'))
elif request.method == 'GET':
form.username.data = session.get('username', '')
form.room.data = session.get('room', '')
return render_template('index.html', form=form, username=session.get('username'))
