Fixed #7565 -- Fixed a problem with PostgreSQL sequence resetting in loaddata.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@7789 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/backends/postgresql/operations.py

@@ -97,7 +97,7 @@ class DatabaseOperations(BaseDatabaseOperations):
             # Use `coalesce` to set the sequence for each model to the max pk value if there are records,
             # or 1 if there are none. Set the `is_called` property (the third argument to `setval`) to true
             # if there are records (as the max pk value is already in use), otherwise set it to false.
-            for f in model._meta.fields:
+            for f in model._meta.local_fields:
                 if isinstance(f, models.AutoField):
                     output.append("%s setval('%s', coalesce(max(%s), 1), max(%s) %s null) %s %s;" % \
                         (style.SQL_KEYWORD('SELECT'),

tests/regressiontests/fixtures_regress/fixtures/model-inheritance.json

@@ -0,0 +1,4 @@
+[
+    {"pk": 1, "model": "fixtures_regress.parent", "fields": {"name": "fred"}},
+    {"pk": 1, "model": "fixtures_regress.child", "fields": {"data": "apple"}}
+]

tests/regressiontests/fixtures_regress/models.py

@@ -20,7 +20,7 @@ class Plant(models.Model):
 class Stuff(models.Model):
     name = models.CharField(max_length=20, null=True)
     owner = models.ForeignKey(User, null=True)
-    
+
     def __unicode__(self):
         # Oracle doesn't distinguish between None and the empty string.
         # This hack makes the test case pass using Oracle.
@@ -38,13 +38,19 @@ class Absolute(models.Model):
         super(Absolute, self).__init__(*args, **kwargs)
         Absolute.load_count += 1
 
+class Parent(models.Model):
+    name = models.CharField(max_length=10)
+
+class Child(Parent):
+    data = models.CharField(max_length=10)
+
 
 __test__ = {'API_TESTS':"""
 >>> from django.core import management
 
 # Load a fixture that uses PK=1
 >>> management.call_command('loaddata', 'sequence', verbosity=0)
-        
+
 # Create a new animal. Without a sequence reset, this new object
 # will take a PK of 1 (on Postgres), and the save will fail.
 # This is a regression test for ticket #3790.
@@ -61,9 +67,9 @@ __test__ = {'API_TESTS':"""
 [<Stuff: None is owned by None>]
 
 ###############################################
-# Regression test for ticket #6436 -- 
+# Regression test for ticket #6436 --
 # os.path.join will throw away the initial parts of a path if it encounters
-# an absolute path. This means that if a fixture is specified as an absolute path, 
+# an absolute path. This means that if a fixture is specified as an absolute path,
 # we need to make sure we don't discover the absolute path in every fixture directory.
 
 >>> load_absolute_path = os.path.join(os.path.dirname(__file__), 'fixtures', 'absolute.json')
@@ -94,4 +100,11 @@ No fixture data found for 'bad_fixture2'. (File format may be invalid.)
 
 >>> sys.stderr = savestderr
 
+###############################################
+# Test for ticket #7565 -- PostgreSQL sequence resetting checks shouldn't
+# ascend to parent models when inheritance is used (since they are treated
+# individually).
+
+>>> management.call_command('loaddata', 'model-inheritance.json', verbosity=0)
+
 """}