views.py 文件源码

def post(self, request, *args, **kwargs):
        user = self.request.user
        filter_string = self.request.POST.get('string')
        delete = self.request.POST.get('delete', 'false')
        if delete == 'true':
            # even if the queryset is empty there are no problems
            Filter.objects.filter(user=user, queryset=filter_string).delete()
            return HttpResponseRedirect(self.get_success_url())

        if filter_string:
            name = self.request.POST.get('name')
            if not re.match("^[\w\s,.]+$", name) or len(name) > 99:
                messages.add_message(request,
                                     messages.WARNING,
                                     _("""Filter name can only contain letters, numbers, commas or periods.
                                       Maximum length is 99 characters""")
                                     )
                return HttpResponseRedirect(self.get_success_url()[:-10])

            typ = self.request.POST.get('typ')
            check = Filter.objects.filter(user=user, typ=typ, queryset=filter_string)
            if check.exists():
                messages.add_message(request,
                                     messages.WARNING,
                                     _("You already have a saved filter for that querystring") +
                                     ": " + check.first().name)
                return HttpResponseRedirect(self.get_success_url())
            if Filter.objects.filter(user=user, name=name, typ=typ).exists():
                messages.add_message(request, messages.WARNING,
                                     _("You already have a saved filter with the name") + ": " + name)
                return HttpResponseRedirect(self.get_success_url())

            Filter(user=user, queryset=filter_string, typ=typ, name=name).save()
        return HttpResponseRedirect(self.get_success_url())