Django Gets Transactions

Jacob Kaplan-Moss added transaction support to the magic-removal branch of Django just a few minutes ago. It’s one of the many changes to come out of the sprint. Usage will look something like this (based on Jacob’s docs and chatting with him in #django-sprint): 

 
from django.db import transaction
 
@transaction.commit_manually
def view(request):
    # you make changes to your objects, calling obj.save() on them as normal
 
    # when you commit, all changes to all objects will be commited to your database
    transaction.commit() 
 
    # an excellent idea would be to wrap in a try/except block
    try:
        # do your stuff
    except:
        transaction.rollback()
    else:
        transaction.commit()

I couldn’t find a good doc quick for Python decorators (that bit with the @ before the function declaration) for people who haven’t used them before, so if someone has a good one, please post it in the comments below.

Here’s a link to the full docs and for those interested in the nitty-gritty, here’s a link to the code checkin.

And before you ask, magic-removal is expected to be merged to trunk before the end of March.

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