On 2008-01-25 19:18:22 -0700, "Vance Dubberly" <[EMAIL PROTECTED]> said:
>
> ok so this ones got to be really simple and I've go to be really stupid.
>
> I want to update a model of something I already have in the database
> so I made a ModelForm that doesn't do anything special for it and I
> use that form to generate a form in a template using the normal
> form.as_table method. Everything prints out alright except for one
> thing, there is no id. "Hmm this'll be troublesome.", I think. "How
> am I gunna know what record to update when the post comes in?" So I
> figure I'm on crack and obviously don't know anything about http or
> databases any of that stuff. Maybe django has some magic foo that's
> over my head. So I print out the form, click the submit button, and
> now there are two copies of this object in the database. So having
> read all the docs and book I now come to ya'll. How am i supposed to
> do a simple update using newforms?
It sounds like you are not passing in the instance to the form in the
if request.method == "POST" condition. There is no need for an ID in
the form because you are probably POSTing to the same URL with ID
there. Check the following code:
def view(request, pk):
instance = get_object_or_404(MyModel, pk=pk)
if request.method == "POST":
form = MyModelForm(request.POST, request.FILES, instance=instance)
if form.is_valid():
form.save()
else:
form = MyModelForm(instance=instance)
return render_to_response("mytemplate.html", {
"form": form,
}, context_instance=RequestContext(request))
--
Brian Rosner
http://oebfare.com
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