Python-сообщество

class BookMark(models.Model):
    category = models.ForeignKey(BookMarkCategory, verbose_name=('Category'))
    description = models.TextField(_('Description'), blank=True)
    link = models.CharField(_('Link'), unique=True, max_length=150) # вот это поле
    priority = models.IntegerField(_('Priority'))
    looked_through = models.BooleanField(_('Looked trough'))
    publick = models.BooleanField(_('Public'))

def edit_bookmark(request, id):
    bookmark_obj = BookMark.objects.get(pk=id)
    if request.POST:
        form = BookMarkForm(request.POST, instance=bookmark_obj) # вот вставил экземпляр
        if form.is_valid():                                       # а обновлять не желает
            form.save()
            return redirect('show_bookmarks_list')
    else:
        form = BookMarkForm()
        form.initial = bookmark_obj.get_fields_dict()
    return render(request, 'mybookmark/create_bookmark.html', dict(form=form))

def edit_bookmark(request, id):
    bookmark_obj = BookMark.objects.get(pk=id)
    if request.POST:
        form = BookMarkForm(request.POST, instance=bookmark_obj) # вот вставил экземпляр
        if form.is_valid():                                       # а обновлять не желает
            form.save()
            return redirect('show_bookmarks_list')
    else:
        form = BookMarkForm(instance=bookmark_obj)
    return render(request, 'mybookmark/create_bookmark.html', dict(form=form))

form = BookMarkForm()
form.initial = bookmark_obj.get_fields_dict()

form = BookMarkForm(instance=bookmark_obj)