Fixed resource_url to work with non-id models (#147)

* Fixed resource_url to work with non-id models

* Add tests for auditlog admin

src/auditlog/mixins.py

@@ -34,7 +34,8 @@ class LogEntryAdminMixin(object):
         app_label, model = obj.content_type.app_label, obj.content_type.model
         viewname = 'admin:%s_%s_change' % (app_label, model)
         try:
-            link = urlresolvers.reverse(viewname, args=[obj.object_id])
+            args = [obj.object_pk] if obj.object_id is None else [obj.object_id]
+            link = urlresolvers.reverse(viewname, args=args)
         except NoReverseMatch:
             return obj.object_repr
         else:

src/auditlog_tests/test_settings.py

@@ -1,6 +1,7 @@
 """
 Settings file for the Auditlog test suite.
 """
+import os
 import django
 
 SECRET_KEY = 'test'
@@ -8,18 +9,27 @@ SECRET_KEY = 'test'
 INSTALLED_APPS = [
     'django.contrib.auth',
     'django.contrib.contenttypes',
+    'django.contrib.messages',
     'django.contrib.sessions',
+    'django.contrib.admin',
     'auditlog',
     'auditlog_tests',
     'multiselectfield',
 ]
 
-MIDDLEWARE_CLASSES = (
+middlewares = (
     'django.middleware.common.CommonMiddleware',
-    'django.contrib.sessions.middleware.SessionMiddleware'
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
     'auditlog.middleware.AuditlogMiddleware',
 )
 
+if django.VERSION < (1, 10):
+    MIDDLEWARE_CLASSES = middlewares
+else:
+    MIDDLEWARE = middlewares
+
 if django.VERSION <= (1, 9):
     POSTGRES_DRIVER = 'django.db.backends.postgresql_psycopg2'
 else:
@@ -42,6 +52,20 @@ DATABASES = {
     }
 }
 
-ROOT_URLCONF = []
+TEMPLATES = [
+    {
+        'APP_DIRS': True,
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'OPTIONS': {
+            'context_processors': [
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ]
+        },
+    },
+]
+
+ROOT_URLCONF = 'auditlog_tests.urls'
 
 USE_TZ = True

src/auditlog_tests/tests.py

@@ -619,3 +619,31 @@ class CompatibilityTest(TestCase):
         else:
             assert not self.user.is_anonymous
         assert compat.is_authenticated(self.user)
+
+
+class AdminPanelTest(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.username = "test_admin"
+        cls.password = User.objects.make_random_password()
+        cls.user, created = User.objects.get_or_create(username=cls.username)
+        cls.user.set_password(cls.password)
+        cls.user.is_staff = True
+        cls.user.is_superuser = True
+        cls.user.is_active = True
+        cls.user.save()
+        cls.obj = SimpleModel.objects.create(text='For admin logentry test')
+
+    def test_auditlog_admin(self):
+        self.client.login(username=self.username, password=self.password)
+        log_pk = self.obj.history.latest().pk
+        res = self.client.get("/admin/auditlog/logentry/")
+        assert res.status_code == 200
+        res = self.client.get("/admin/auditlog/logentry/add/")
+        assert res.status_code == 200
+        res = self.client.get("/admin/auditlog/logentry/{}/".format(log_pk), follow=True)
+        assert res.status_code == 200
+        res = self.client.get("/admin/auditlog/logentry/{}/delete/".format(log_pk))
+        assert res.status_code == 200
+        res = self.client.get("/admin/auditlog/logentry/{}/history/".format(log_pk))
+        assert res.status_code == 200

src/auditlog_tests/urls.py

@@ -0,0 +1,13 @@
+import django
+from django.conf.urls import include, url
+from django.contrib import admin
+
+
+if django.VERSION < (1, 9):
+    admin_urls = include(admin.site.urls)
+else:
+    admin_urls = admin.site.urls
+
+urlpatterns = [
+    url(r'^admin/', admin_urls),
+]