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-rw-r--r--django/contrib/sites/management.py20
-rw-r--r--django/contrib/sites/tests.py6
2 files changed, 22 insertions, 4 deletions
diff --git a/django/contrib/sites/management.py b/django/contrib/sites/management.py
index daec3d9eec..1b76bf5411 100644
--- a/django/contrib/sites/management.py
+++ b/django/contrib/sites/management.py
@@ -3,22 +3,34 @@ Creates the default Site object.
"""
from django.db.models import signals
+from django.db import connections
from django.db import router
from django.contrib.sites.models import Site
from django.contrib.sites import models as site_app
+from django.core.management.color import no_style
def create_default_site(app, created_models, verbosity, db, **kwargs):
# Only create the default sites in databases where Django created the table
if Site in created_models and router.allow_syncdb(db, Site) :
- if verbosity >= 2:
- print "Creating example.com Site object"
# The default settings set SITE_ID = 1, and some tests in Django's test
# suite rely on this value. However, if database sequences are reused
# (e.g. in the test suite after flush/syncdb), it isn't guaranteed that
# the next id will be 1, so we coerce it. See #15573 and #16353. This
# can also crop up outside of tests - see #15346.
- s = Site(pk=1, domain="example.com", name="example.com")
- s.save(using=db)
+ if verbosity >= 2:
+ print "Creating example.com Site object"
+ Site(pk=1, domain="example.com", name="example.com").save(using=db)
+
+ # We set an explicit pk instead of relying on auto-incrementation,
+ # so we need to reset the database sequence. See #17415.
+ sequence_sql = connections[db].ops.sequence_reset_sql(no_style(), [Site])
+ if sequence_sql:
+ if verbosity >= 2:
+ print "Resetting sequence"
+ cursor = connections[db].cursor()
+ for command in sequence_sql:
+ cursor.execute(command)
+
Site.objects.clear_cache()
signals.post_syncdb.connect(create_default_site, sender=site_app)
diff --git a/django/contrib/sites/tests.py b/django/contrib/sites/tests.py
index 17ab1f2a7c..828badb386 100644
--- a/django/contrib/sites/tests.py
+++ b/django/contrib/sites/tests.py
@@ -15,6 +15,12 @@ class SitesFrameworkTests(TestCase):
def tearDown(self):
Site._meta.installed = self.old_Site_meta_installed
+ def test_save_another(self):
+ # Regression for #17415
+ # On some backends the sequence needs reset after save with explicit ID.
+ # Test that there is no sequence collisions by saving another site.
+ Site(domain="example2.com", name="example2.com").save()
+
def test_site_manager(self):
# Make sure that get_current() does not return a deleted Site object.
s = Site.objects.get_current()