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Fixed #3615: Added support for loading fixtures with forward references on database backends (such as MySQL/InnoDB) that do not support deferred constraint checking. Many thanks to jsdalton for coming up with a clever solution to this long-standing issue, and to jacob, ramiro, graham_king, and russellm for review/testing. (Apologies if I missed anyone else who helped here.)

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git-svn-id: http://code.djangoproject.com/svn/django/trunk@16590 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Karen Tracey
2011-08-07 00:43:26 +00:00
parent e3c89346d2
commit be87f0b0ec
16 changed files with 356 additions and 23 deletions
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24
django/core/management/commands/loaddata.py
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@@ -1,3 +1,7 @@
# This is necessary in Python 2.5 to enable the with statement, in 2.6
# and up it is no longer necessary.
from __future__ import with_statement
import sys
import os
import gzip
@@ -166,12 +170,20 @@ class Command(BaseCommand):
(format, fixture_name, humanize(fixture_dir)))
try:
objects = serializers.deserialize(format, fixture, using=using)
for obj in objects:
objects_in_fixture += 1
if router.allow_syncdb(using, obj.object.__class__):
loaded_objects_in_fixture += 1
models.add(obj.object.__class__)
obj.save(using=using)
with connection.constraint_checks_disabled():
for obj in objects:
objects_in_fixture += 1
if router.allow_syncdb(using, obj.object.__class__):
loaded_objects_in_fixture += 1
models.add(obj.object.__class__)
obj.save(using=using)
# Since we disabled constraint checks, we must manually check for
# any invalid keys that might have been added
table_names = [model._meta.db_table for model in models]
connection.check_constraints(table_names=table_names)
loaded_object_count += loaded_objects_in_fixture
fixture_object_count += objects_in_fixture
label_found = True