我有一个样本Web应用程序（量瓶中，用在Heroku上运行烧瓶登录）在这个网址： http://twittaclone.herokuapp.com 。
当我在我的本地运行它的登录功能工作正常。 当我推到它的Heroku怪胎，不会允许用户登录（它允许用户注册）。 数据库修改正在取得进展。
为什么瓶未登入Heroku上工作？
app = Flask(__name__)
mysql = MySQL()
app.config['MYSQL_DATABASE_HOST'] = os.environ['MYSQL_DATABASE_HOST'] if 'MYSQL_DATABASE_HOST' in os.environ else config.MYSQL_DATABASE_HOST
app.config['MYSQL_DATABASE_PORT'] = os.environ['MYSQL_DATABASE_PORT'] if 'MYSQL_DATABASE_PORT' in os.environ else config.MYSQL_DATABASE_PORT
app.config['MYSQL_DATABASE_USER'] = os.environ['MYSQL_DATABASE_USER'] if 'MYSQL_DATABASE_USER' in os.environ else config.MYSQL_DATABASE_USER
app.config['MYSQL_DATABASE_PASSWORD'] = os.environ['MYSQL_DATABASE_PASSWORD'] if 'MYSQL_DATABASE_PASSWORD' in os.environ else config.MYSQL_DATABASE_PASSWORD
app.config['MYSQL_DATABASE_DB'] = os.environ['MYSQL_DATABASE_DB'] if 'MYSQL_DATABASE_DB' in os.environ else config.MYSQL_DATABASE_DB
mysql.init_app(app)
if 'SECRET_KEY' in os.environ: app.config['SECRET_KEY'] = os.environ['SECRET_KEY']
else: app.config['SECRET_KEY'] = os.urandom(24)
def connect_db(): return mysql.connect()
###
# Routing for your application.
###
login_manager = LoginManager()
login_manager.login_view = "login"
@login_manager.user_loader
def load_user(username):
g.db = connect_db()
return get_user(username)
login_manager.init_app(app)
@app.route('/')
def home(): return render_template('home.html')
def connect_db(): return mysql.connect()
@app.before_request
def before_request():
g.user = current_user
g.db = connect_db()
@app.teardown_request
def tear_down(exception):
g.db.close()
@app.route('/main/')
@login_required
def main():
print("in main")
tweets, user = get_main()
follower_count, followee_count = get_follower_info(g.user.username)
return render_template('main.html', user=user, tweets=tweets, followercount = follower_count, followeecount = followee_count)
@app.route('/login/', methods=['GET', 'POST'])
def login():
"""Logs the user in."""
if request.method == 'GET':
if current_user is user_logged_in: logout_user()
error = None
if request.method == 'POST':
user = get_user(request.form['username'])
if user is None:
error = 'Invalid username'
elif not check_password_hash(user.password, request.form['password']):
error = 'Invalid password'
else:
flash('You were logged in')
login_user(user)
return redirect(url_for('main'))
return render_template('login.html', error=error)
