Hello this post is now four days old. I would like to hear from other 

Something like:

 "I have no clue what you are talking about" or 
 "I understand your concerns, but I have no clue, too" or
 "Thank you about talking about this, this raised my awareness"

would make me happy.

Thank you.

Am Donnerstag, 3. August 2017 10:07:53 UTC+2 schrieb guettli:
> First I asked a similar question on the postgresql-general list. The 
> discussion[1] has settled there.
> Now I would love the hear what you think.
> I am thinking about rewriting an existing application which uses PostgreSQL 
> via Django.
> Up to now the permission checks are done at the application level.
> Up to now queries like: "Show all items which the current user is allowed to 
> modify" result in complicated SQL and
> this leads to slow queries.
> Up to now there is one db-user and the application does the filtering of rows 
> to prevent application users to see
> items which they are not allowed to see.
> I guess most web applications work like this.
> I would like to reduce the "ifing and elsing" in my python code (less 
> conditions, less bugs, more SQL, more performance)
> One important intention for me: I would like to avoid the redundancy. As soon 
> as I want to query for 
> "Show all items which the current user is allowed to modify" I need the 
> permission checking in a SQL WHERE condition.
> If I implement this. Then my code which might look like this is redundant:
> {{{
> def has_perm(obj, user):
>     if user.is_superuser:
>         return True
>     ...
> }}}
> Yes, I feel farewell pain. I love Python, but I guess I will use perm 
> checking via SQL WHERE for new projects in the future.
> What do you think?
>  Regards,
>    Thomas Güttler
> [1]: 
> https://www.postgresql.org/message-id/e662fd8a-6001-514c-71e8-01718444f338%40thomas-guettler.de

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