api_check.code should be indexed

hc/api/migrations/0014_auto_20151019_2039.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0013_auto_20151001_2029'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='check',
+            name='code',
+            field=models.UUIDField(default=uuid.uuid4, db_index=True, editable=False),
+        ),
+    ]

hc/api/models.py

@@ -26,7 +26,7 @@ CHANNEL_KINDS = (("email", "Email"), ("webhook", "Webhook"),
 
 class Check(models.Model):
     name = models.CharField(max_length=100, blank=True)
-    code = models.UUIDField(default=uuid.uuid4, editable=False)
+    code = models.UUIDField(default=uuid.uuid4, editable=False, db_index=True)
     user = models.ForeignKey(User, blank=True, null=True)
     created = models.DateTimeField(auto_now_add=True)
     timeout = models.DurationField(default=DEFAULT_TIMEOUT)