Fixed #24333 -- Fixed admin history view crash with non-integer slug.

from django.forms.widgets import CheckboxSelectMultiple, SelectMultiple

from django.http import Http404, HttpResponseRedirect

from django.http.response import HttpResponseBase

from django.shortcuts import get_object_or_404

from django.template.response import SimpleTemplateResponse, TemplateResponse

from django.utils import six

from django.utils.decorators import method_decorator

        from django.contrib.admin.models import LogEntry

        # First check if the user can see this history.

        model = self.model

        obj = get_object_or_404(self.get_queryset(request), pk=unquote(object_id))

        obj = self.get_object(request, unquote(object_id))

        if obj is None:

            raise Http404(_('%(name)s object with primary key %(key)r does not exist.') % {

                'name': force_text(model._meta.verbose_name),

                'key': escape(object_id),

            })

        if not self.has_change_permission(request, obj):

            raise PermissionDenied

            self.client.get(reverse('admin:logout'))

    def test_history_view_bad_url(self):

        self.client.post(reverse('admin:login'), self.changeuser_login)

        response = self.client.get(reverse('admin:admin_views_article_history', args=('foo',)))

        self.assertEqual(response.status_code, 404)

    def test_conditionally_show_add_section_link(self):

        """

        The foreign key widget should only show the "add related" button if the