Make looking up a package with many required by entries faster

We were doing a 2 queries for each 'Required By' entry- arch and repo as
usual. Add it to the original query so we don't waste time.

Noticed while looking at the glibc description page.

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/main/models.py b/main/models.py
index 8d5da3bc..570221bf 100644
--- a/main/models.py
+++ b/main/models.py
@@ -205,7 +205,7 @@ class Package(models.Model):
         """
         Returns a list of package objects.
         """
-        requiredby = Package.objects.filter(
+        requiredby = Package.objects.select_related('arch', 'repo').filter(
                 packagedepend__depname=self.pkgname,
                 arch__name__in=(self.arch.name, 'Any'))
         return requiredby.order_by('pkgname')