On Sep 13, 9:32 pm, keynesiandreamer <keynesiandr...@gmail.com> wrote:
> Hi Daniel, thanks for looking at this!
>
> Here is my views.py code related to this:
>
> @login_required
> def wine_add_page(request):
> if request.method == 'POST':
> form = WineAddForm(request.POST)
> if form.is_valid():
> #create or get dummy wine
> wine, dummy = Wine.objects.get_or_create(
> wine_name=form.cleaned_data['wine_name']
> )
>
> #update wine_name
> winerater.wine_name = form.cleaned_data['title']
> #if the bookmark is being updated, clear old tag list
> if not created:
> winerater.tag_set.clear()
> #create new tage list
> tag_names = form.cleaned_data['tags'].split()
> for tag_name in tag_names:
> tag, dummy = Tag.objects.get_or_create(name=tag_name)
> wnerater.tag_set.add(tag)
> #save wine to DB
> winerater.save()
> return HttpResponseRedirect(
> '/user/%s/' % request.user.username
> )
> else:
> form = WineAddForm()
> variables = RequestContext(request, {
> 'form': form
> })
> return render_to_response('wine_add.html', variables)
>
> HTH
>
> -Ben
The immediate issue here is that your `get_or_create()` call only
passes a value for `wine_name` - if the wine doesn't exist, Django
will try and create it, but doesn't have any of the other fields,
hence the integrity error. You need to use the `defaults` argument to
provide the rest of the data. See the documentation:
http://docs.djangoproject.com/en/1.2/ref/models/querysets/#get-or-create-kwargs
There are a few other issues with this code, which you'll discover
once you've fixed that - eg you start off calling the new Wine object
`wine`, then swap to `winerater`, which will lead to an error.
Similarly you've used `dummy` as the second result from
`get_or_create` but then later refer to `created`.
--
DR.
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