问题描述
我正在测试我的flask应用程序以登录和注销。我也使用LDAPloginform登录ldap服务器中的用户。
当前，一旦用户输入用户名和密码并登录，我便能够对其进行身份验证，但是当我尝试注销用户时，会收到以下错误消息： >
File "C:\Users\e136320\AppData\Local\Programs\Python\python38\Lib\site-packages\sqlalchemy\util\compat.py",line 178,in raise_
raise exception
sqlalchemy.orm.exc.UnmappedInstanceError: Class 'werkzeug.local.LocalProxy' is not mapped
这是我的项目文件夹结构：
flask_app/
static/
- css/
- js/
templates/
- base.html
- home_page.html
- login.html
- run.py
这是我的run.py代码：
# Flask-sqlAlchemy settings
app.config["sqlALCHEMY_DATABASE_URI"] = BASE_CONfig["sql_URI"]
app.config['sqlALCHEMY_TRACK_MODIFICATIONS'] = False
login_manager = LoginManager(app) # Setup a Flask-Login Manager
ldap_manager = LDAP3LoginManager(app)
db = sqlAlchemy(app)
moment = Moment(app)
Bootstrap(app)
# Create a dictionary to store the users in when they authenticate
# This example stores users in memory.
users = {}
# Declare an Object Model for the user,and make it comply with the
# flask-login UserMixin mixin.
class User(UserMixin):
def __init__(self,dn,username,data):
self.dn = dn
self.username = username
self.data = data
def __repr__(self):
return self.dn
def get_id(self):
return self.dn
# Declare a User Loader for Flask-Login.
# Simply returns the User if it exists in our 'database',otherwise
# returns None.
@login_manager.user_loader
def load_user(id):
if id in users:
return users[id]
return None
# Declare The User Saver for Flask-Ldap3-Login
# This method is called whenever a LDAPLoginForm() successfully validates.
# Here you have to save the user,and return it so it can be used in the
# login controller.
@ldap_manager.save_user
def save_user(dn,data,memberships):
user = User(dn,data)
users[dn] = user
return user
# Declare some routes for usage to show the authentication process.
@app.route('/')
def home():
# Redirect users who are not logged in.
if not current_user or current_user.is_anonymous:
return redirect(url_for('login'))
# User is logged in,so show them a page with their cn and dn.
return render_template('home_page.html')
@app.route('/login',methods=['GET','POST'])
def login():
user = current_user
# Instantiate a LDAPLoginForm which has a validator to check if the user
# exists in LDAP.
form = LDAPLoginForm()
if form.validate_on_submit():
login_user(form.user,remember=True) # Tell flask-login to log them in
print(current_user.username)
return redirect('/') # Send them home
return render_template("login.html",form=form,user=user)
@app.route('/home')
@login_required
def home_page():
return render_template('home_page.html')
@app.route('/logout')
@login_required
def logout():
db.session.delete(current_user) # In order for this to work,I will have to ADD AND COMMIT A USER AS WELL,OTHERWISE GIVES ERROR
db.session.commit()
logout_user()
#flash('You have been logged out.')
return redirect('/')
if __name__ == '__main__':
app.run(host='0.0.0.0',port=5000,debug=True)
这是我的login.html文件（如果有帮助的话）：
{% extends "bootstrap/base.html" %}
{% block html_attribs %} lang="en"{% endblock %}
{% block title %} My_app{% endblock %}
{% block styles %}
{{super()}}
{{moment.include_moment()}}
{% endblock %}
{% block navbar %}
<div class="navbar navbar-default" role="navigation" >
<div class="containter">
<div class="navbar-header">
<button type="button" class="navbar-toggle"
data-toggle="collapse" data-target=".navbar-collapse">
<span class="sr-only">Toggle Navigation</span>
<span class="icon-bar">Toggle Navigation</span>
<span class="icon-bar">Toggle Navigation</span>
<span class="icon-bar">Toggle Navigation</span>
</button>
<a class="navbar-brand" href="{{ url_for('home_page')}}"><link rel="stylesheet" href="/static/bcbsm.jpg"></a>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li><a href="{{ url_for('home_page') }}"> Home </a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
{% if current_user.is_authenticated %}
<li><a href="{{ url_for('logout') }}">Log Out</a></li>
{%else%}
<li><a href="{{ url_for('login') }}">Log In</a></li>
{%endif%}
</ul>
</div>
</div>
</div>
{% endblock %}
我是flask和ldap登录的新手，因此任何信息或建议都将有所帮助。似乎我需要在登录功能中将用户添加到会话中，然后在注销功能中删除该用户。只是非常困惑。
解决方法
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