Fixed #757: manually set AutoField values are now respected; also added unit test to verify the correct behavior. Thanks, cygnus.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@1511 bcc190cf-cafb-0310-a4f2-bffc1f526a37

AUTHORS

@@ -87,7 +87,6 @@ answer newbie questions, and generally made Django that much better:
     wojtek
     ye7cakf02@sneakemail.com
 
-
 A big THANK YOU goes to:
 
     Rob Curley and Ralph Gage for letting us open-source Django.

django/core/meta/__init__.py

@@ -1009,8 +1009,12 @@ def method_save(opts, self):
             record_exists = False
     if not pk_set or not record_exists:
         field_names = [db.db.quote_name(f.column) for f in opts.fields if not isinstance(f, AutoField)]
-        placeholders = ['%s'] * len(field_names)
         db_values = [f.get_db_prep_save(f.pre_save(getattr(self, f.attname), True)) for f in opts.fields if not isinstance(f, AutoField)]
+        # If the PK has been manually set we must respect that
+        if pk_set:
+            field_names += [f.column for f in opts.fields if isinstance(f, AutoField)]
+            db_values += [f.get_db_prep_save(f.pre_save(getattr(self, f.column), True)) for f in opts.fields if isinstance(f, AutoField)]
+        placeholders = ['%s'] * len(field_names)
         if opts.order_with_respect_to:
             field_names.append(db.db.quote_name('_order'))
             # TODO: This assumes the database supports subqueries.
@@ -1020,7 +1024,7 @@ def method_save(opts, self):
         cursor.execute("INSERT INTO %s (%s) VALUES (%s)" % \
             (db.db.quote_name(opts.db_table), ','.join(field_names),
             ','.join(placeholders)), db_values)
-        if opts.has_auto_field:
+        if opts.has_auto_field and not pk_set:
             setattr(self, opts.pk.attname, db.get_last_insert_id(cursor, opts.db_table, opts.pk.column))
     db.db.commit()
     # Run any post-save hooks.

tests/testapp/models/basic.py

@@ -157,6 +157,14 @@ datetime.datetime(2005, 7, 31, 12, 30, 45)
 >>> a8.save()
 >>> a8.id
 8L
+
+# You can manually specify the primary key when creating a new objet
+>>> a101 = articles.Article(id=101, headline='Article 101', pub_date=datetime(2005, 7, 31, 12, 30, 45))
+>>> a101.save()
+>>> a101 = articles.get_object(pk=101)
+>>> a101.headline
+'Article 101'
+
 """
 
 from django.conf import settings