I have a public-facing form where registered users can submit clubs.
Later, I access the data by slug, using a generic object_detail view.
My problem is that someone can input a club that's already there.
Besides polluting the database, it breaks when they try to access the
club's page (GET returns 2).
So, how can I have newforms check for a dupe before saving the form
and (hopefully) return an error message if there is a dupe? Here's the
newforms part I have:
if request.method == 'POST':
submission = request.POST.copy()
submission['slug'] = slugify(submission['name'])
form = ClubFormClass(submission)
if form.is_valid():
form.save()
return HttpResponseRedirect('/thankyou/')
else:
form = ClubFormClass()
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