Fixed #8292 -- Honor filter_horizontal and filter_vertical in inlines correctly. It now adds the right Javascript to handle them when they are the only ones on the page. Thanks dakrauth for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8392 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/admin/options.py

@@ -828,6 +828,8 @@ class InlineModelAdmin(BaseModelAdmin):
         js = []
         if self.prepopulated_fields:
             js.append('js/urlify.js')
+        if self.filter_vertical or self.filter_horizontal:
+            js.extend(['js/SelectBox.js' , 'js/SelectFilter2.js'])
         return forms.Media(js=['%s%s' % (settings.ADMIN_MEDIA_PREFIX, url) for url in js])
     media = property(_media)