views.py

from flask import flash, redirect, render_template, request, url_for
from flask_login import login_user, logout_user

from app import app
from app import login_manager
from forms import LoginForm

@app.route('/')
def homepage():
    return render_template('homepage.html')

@app.route('/login/', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        form = LoginForm(request.form)
        if form.validate():
            login_user(form.user, remember=form.remember_me.data)
            flash('Successfully logged in as {}'.format(form.user.email), 'success')
            return redirect(request.args.get('next') or url_for('homepage'))
    else:
        form = LoginForm()
    return render_template('login.html', form=form)

@app.route("/logout/")
def logout():
    logout_user()
    flash('You have been logged out.', 'success')
    return redirect(request.args.get('next') or url_for('homepage'))