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AttributeError: 'NoneType' object has no attribute 'password' #238

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jackmerrill opened this issue Nov 2, 2018 · 11 comments · May be fixed by #331
Closed

AttributeError: 'NoneType' object has no attribute 'password' #238

jackmerrill opened this issue Nov 2, 2018 · 11 comments · May be fixed by #331

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@jackmerrill
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Happens if I delete the DB file. Works if I leave it alone for a few.
Nothing with variables, this is all something with Flask-User
Full Traceback:

Traceback (most recent call last):
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/app.py", line 2309, in __call__
    return self.wsgi_app(environ, start_response)
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/app.py", line 2295, in wsgi_app
    response = self.handle_exception(e)
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/app.py", line 1741, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/_compat.py", line 35, in reraise
    raise value
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/app.py", line 2292, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/app.py", line 1815, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/app.py", line 1718, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/_compat.py", line 35, in reraise
    raise value
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/app.py", line 1813, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/app.py", line 1799, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/ec2-user/environment/AmusedGrape/ask/server.py", line 128, in home_page
    return render_template('index.html')
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/templating.py", line 133, in render_template
    ctx.app.update_template_context(context)
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask/app.py", line 792, in update_template_context
    context.update(func())
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask_login/utils.py", line 368, in _user_context_processor
    return dict(current_user=_get_user())
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask_login/utils.py", line 335, in _get_user
    current_app.login_manager._load_user()
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask_login/login_manager.py", line 359, in _load_user
    return self.reload_user()
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask_login/login_manager.py", line 321, in reload_user
    user = self.user_callback(user_id)
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask_user/user_manager.py", line 130, in load_user_by_user_token
    user = self.db_manager.UserClass.get_user_by_token(user_token)
  File "/home/ec2-user/environment/AmusedGrape/ask/flask/lib/python3.6/dist-packages/flask_user/user_mixin.py", line 52, in get_user_by_token
    user_password = '' if user_manager.USER_ENABLE_AUTH0 else user.password[-8:]
AttributeError: 'NoneType' object has no attribute 'password'
@jackmerrill
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Can confirm,This is an issue with Flask-User.

@jackmerrill
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Everything works if I remove the UserManager class from my code. It is an issue with Flask-User.

@lingthio
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lingthio commented Nov 3, 2018

I've been a bit swamped lately. Care to submit a fix as a pull request? -- Ling

@ghost
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ghost commented Nov 3, 2018 •
edited by ghost
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@yoshifan509 which Python version are you using? I have this problem with Python 3.7

@ghost
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ghost commented Nov 5, 2018 •
edited by ghost
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It also happens when you delete a single user from the database and then reload the url you are in or even the base url for the website. It works again if you delete the session cookie

@jackmerrill
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@saitam1 I am using 3.6.5.
I'll try to delete the session cookies.
I cleared the browser cookies and that seemed to fix it.

@ghost
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ghost commented Nov 29, 2018

@yoshifan509 Is deleting the cookie a good solution for this problem? Don't you think we should let the issue open until somebody fixes it inside the code?

@bkgoodman
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Deleting cookies worked for me - but really should be fixed for "real".

@papak69
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papak69 commented Jul 16, 2019

is there anyway i can "force" delete cookie for user if the user was deleted from db?

@rubenwardy rubenwardy mentioned this issue Jan 19, 2020
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@colaisr
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colaisr commented May 24, 2020

confirm it still happens ...when removing db.. but not everytime...first time a day after several deletes redos

@wenjie0909
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Hi,

I just change the code in user_mixin.py as following, and it seems works:

after: user_password = '' if user_manager.USER_ENABLE_AUTH0 or user == None else user.password[-8:]
before: user_password = '' if user_manager.USER_ENABLE_AUTH0 else user.password[-8:]

MichaelMa2014 added a commit to MichaelMa2014/Flask-User that referenced this issue Mar 8, 2021
@MichaelMa2014
Update user_mixin.py
da819fa 
Fixes lingthio#238 AttritbuteError: 'NoneType' object has no attribute 'password'
@MichaelMa2014 MichaelMa2014 mentioned this issue Mar 8, 2021
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6 participants
@bkgoodman @papak69 @lingthio @colaisr @jackmerrill @wenjie0909