auth.user question

[Mark Finkelstein]

I have two lines of code that read as follows:

if auth.user:
    if db.auth_user[auth.user.id]['image']=='' or db.auth_user[auth.user.id]['image']==None:

Recently, while logged in, I dropped all the tables, refreshed the page and then got an Internal Error saying

 if db.auth_user[auth.user.id]['image']=='' or db.auth_user[auth.user.id]['image']==None:
TypeError: 'NoneType' object has no attribute '__getitem__'

I'm guessing it has to do with cookies saving the session, where the web2py side recognizes what seems to be a session and building auth.user based off of this, but I'm not quite sure why auth.user is built without a query check of the database? I was wondering why this is?

[Massimo Di Pierro]

If you are not logged in db.auth_user[auth.user.id] is None.

[Mark Finkelstein]

I get  the following error for trying that:

print db.auth_user[auth.user.id]
AttributeError: 'NoneType' object has no attribute 'id'

I thought `auth.user` is supposed to be used to check if the user is logged in?

[Anthony]

If the user is not logged in, auth.user will return None, so you can't do auth.user.id. Instead, you should use auth.user_id, which will return None if not logged in.

Anthony

[Mark Finkelstein]

Yes, I thought this was so, my issue is more with the fact that after dropping the databases, this seems to give an invalid value, as shown in my first post? I may be wrong.

[Anthony]

auth.user is stored in the session and is not refreshed from the database on every request, which would be inefficient. Presumably you don't typically drop your db tables in production.

Anthony

[Mark Finkelstein]

This makes sense. This was what I was wondering. Thanks for the answer!

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