id,summary,reporter,owner,description,type,status,component,version,severity,resolution,keywords,cc,stage,has_patch,needs_docs,needs_tests,needs_better_patch,easy,ui_ux 10544,Saving ModelForm to update exisitng record generates No {model} matches the given query.,mcwong644,nobody,"{{{ #!python #models.py class Publisher(models.Model): name = models.CharField(max_length=30) address = models.CharField(max_length=50) city = models.CharField(max_length=60) state_province = models.CharField(max_length=30) country = models.CharField(max_length=50) website = models.URLField() def __unicode__(self): return self.name class Meta: ordering = [""name""] class Author(models.Model): first_name = models.CharField(max_length=30) last_name = models.CharField(max_length=40) email = models.EmailField(blank=True, verbose_name='e-mail') objects = models.Manager() sel_objects=AuthorManager() def __unicode__(self): return self.first_name+' '+ self.last_name class Book(models.Model): title = models.CharField(max_length=100) authors = models.ManyToManyField(Author) publisher = models.ForeignKey(Publisher) publication_date = models.DateField(blank=True, null=True) num_pages = models.IntegerField(blank=True, null=True) objects = models.Manager() bookobjects = BookManager() wong = WongAuthor() class BookForm(ModelForm): class Meta: model = Book #view.py def authorcontactupd(request,id): if request.method == 'POST': a=Author.objects.get(pk=int(id)) form = AuthorForm(request.POST, instance=a) if form.is_valid(): form.save() return HttpResponseRedirect('/contact/created') else: a=Author.objects.get(pk=int(id)) form = AuthorForm(instance=a) return render_to_response('author_form.html', {'form': form}) }}} Produces this error {{{ Page not found (404) Request Method: POST Request URL: http://127.0.0.1:8000/books/bookupd/ No Publisher matches the given query. You're seeing this error because you have DEBUG = True in your Django settings file. Change that to False, and Django will display a standard 404 page. }}}",,closed,Uncategorized,1.0,,invalid,,,Unreviewed,0,0,0,0,0,0