Re: Accessing Django models using DJANGO_SETTINGS_MODULE

On Sun, Mar 8, 2015 at 5:21 AM, Dheerendra Rathor
<dheeru.rathor14@gmail.com> wrote:
> I've a django project and I've few models like ChatRoom and Chat etc
>
> I'm accessing the ChatRooms from commandline using ipython as follow
> In [1]: import os
>
> In [2]: os.environ['DJANGO_SETTINGS_MODULE'] = 'chat_project.settings'
>
> In [3]: from chat.models import Chat, ChatRoom
>
> In [4]: ChatRoom.objects.all()
> Out[4]: [<ChatRoom: Lab 01>, <ChatRoom: Lab 02>, <ChatRoom: Lab 03>,
> <ChatRoom: Lab 04>, <ChatRoom: Lab 05>, <ChatRoom: Lab 06>, <ChatRoom: Lab
> 07>, <ChatRoom: Lab 10>, <ChatRoom: Lab 13>, <ChatRoom: Lab 14>, <ChatRoom:
> Lab 15>, <ChatRoom: Lab 16>]
>
> Now, I'm adding more ChatRooms through web interface - Lab 17, Lab 18 and
> deleting Lab 10
> Now the new output of
> In [5]: ChatRoom.objects.all()
>
> The output is still the same
> Out[5]: [<ChatRoom: Lab 01>, <ChatRoom: Lab 02>, <ChatRoom: Lab 03>,
> <ChatRoom: Lab 04>, <ChatRoom: Lab 05>, <ChatRoom: Lab 06>, <ChatRoom: Lab
> 07>, <ChatRoom: Lab 10>, <ChatRoom: Lab 13>, <ChatRoom: Lab 14>, <ChatRoom:
> Lab 15>, <ChatRoom: Lab 16>]
>
> the webinterface is running as wsgi application on gunicorn server.
>
> I think the output on command line is not changed because the django default
> model manager is accessing the objects from cache and not from database
> itself.

I don't think that is likely. What version of django do you use, what
database engine do you use, what options have you configured it to
use? Django version matters a lot in this case.

It sounds like the shell is running within a transaction, so that
reads are repeatable within it - doing the same query will always
return the same results. This is the purpose of transactions, nothing
changes in the database until you commit your transaction.

Cheers

Tom

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