flask-login的使用3

# coding=utf-8
import flask

app = flask.Flask(__name__)
app.secret_key = 'super secret string'

import flask_login

from flask_login import login_required

login_manager = flask_login.LoginManager()

login_manager.init_app(app)
users = {'foo@bar.tld': {'pw': 'secret'}}

class User(flask_login.UserMixin):
pass
@login_manager.user_loader
def user_loader(email):
if email not in users:
return

user = User()
user.id = email
return user

@login_manager.request_loader
def request_loader(request):
email = request.form.get('email')
if email not in users:
return

user = User()
user.id = email

print '123'
user.is_authenticated = request.form['pw'] == users[email]['pw']
return user

@app.route('/login', methods=['GET', 'POST'])
def login():
if flask.request.method == 'GET':
return '''
<form action='login' method='POST'>
<input type='text' name='email' id='email' placeholder='email'></input>
<input type='password' name='pw' id='pw' placeholder='password'></input>
<input type='submit' name='submit'></input>
</form>
'''
email = flask.request.form['email']

if email not in users:
print '不存在'

if email in users:
if flask.request.form['pw'] == users[email]['pw']:
user = User()
user.id = email
flask_login.login_user(user)
return flask.redirect(flask.url_for('protected'))

return 'Bad login'

@app.route('/protected')
@flask_login.login_required
def protected():
return 'Logged in as: ' + flask_login.current_user.id

@app.route('/logout')
def logout():
flask_login.logout_user()
return 'Logged out'

@login_manager.unauthorized_handler         # 未登录将会被执行这个函数
def unauthorized_handler():
return 'Unauthorized'

@app.route('/require')
@login_required
def require():
return 'require'

if __name__ == '__main__':

app.run(debug=True)