Using Django 1.6.7, in the Admin if I change the name of an object (in
this case "substance") with 1:1 relationships and click [Save as new] I
get an integrity error[1]. This was working in Django 1.5.x.
Before I put in the effort to roll back to 1.5 for proof I thought I'd
check the docs and found this with a "Changed in Django 1.6" note ...
https://docs.djangoproject.com/en/1.6/ref/models/instances/#how-django-knows-to-update-vs-insert
Does anyone have a suggestion?
The interactive traceback indicates my save() method on one of the 1:1
models (in this case "gas") is triggering the problem. See below.
Thanks for any pointers
Mike
- - - - - - - - - - - -
[1] Environment:
Request Method: POST
Request URL: http://localhost:8000/admin/substance/substance/17/
Django Version: 1.6.7
Python Version: 2.7.6
Installed Applications:
(u'django.contrib.auth',
u'django.contrib.contenttypes',
u'django.contrib.sessions',
u'django.contrib.sites',
u'django.contrib.messages',
u'django.contrib.admin',
u'django.contrib.admindocs',
u'django.contrib.staticfiles',
u'common',
u'company',
u'refer',
u'substance',
u'workplace')
Installed Middleware:
(u'django.middleware.cache.UpdateCacheMiddleware',
u'django.contrib.sessions.middleware.SessionMiddleware',
u'django.middleware.locale.LocaleMiddleware',
u'django.middleware.common.CommonMiddleware',
u'django.middleware.transaction.TransactionMiddleware',
u'django.middleware.csrf.CsrfViewMiddleware',
u'django.contrib.auth.middleware.AuthenticationMiddleware',
u'django.contrib.messages.middleware.MessageMiddleware',
u'django.middleware.doc.XViewMiddleware',
u'django.middleware.clickjacking.XFrameOptionsMiddleware',
u'django.middleware.cache.FetchFromCacheMiddleware')
Traceback:
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\core\handlers\base.py"
in get_response
112. response = wrapped_callback(request,
*callback_args, **callback_kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\contrib\admin\options.py"
in wrapper
452. return self.admin_site.admin_view(view)(*args,
**kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\utils\decorators.py" in
_wrapped_view
99. response = view_func(request, *args, **kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\views\decorators\cache.py"
in _wrapped_view_func
52. response = view_func(request, *args, **kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\contrib\admin\sites.py"
in inner
198. return view(request, *args, **kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\utils\decorators.py" in
_wrapper
29. return bound_func(*args, **kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\utils\decorators.py" in
_wrapped_view
99. response = view_func(request, *args, **kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\utils\decorators.py" in
bound_func
25. return func(self, *args2, **kwargs2)
File "C:\Users\mike\env\xxdx\lib\site-packages\django\db\transaction.py"
in inner
371. return func(*args, **kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\contrib\admin\options.py"
in change_view
1224.
current_app=self.admin_site.name))
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\utils\decorators.py" in
_wrapper
29. return bound_func(*args, **kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\utils\decorators.py" in
_wrapped_view
99. response = view_func(request, *args, **kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\utils\decorators.py" in
bound_func
25. return func(self, *args2, **kwargs2)
File "C:\Users\mike\env\xxdx\lib\site-packages\django\db\transaction.py"
in inner
371. return func(*args, **kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\contrib\admin\options.py"
in add_view
1152. self.save_related(request, form, formsets, False)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\contrib\admin\options.py"
in save_related
904. self.save_formset(request, form, formset, change=change)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\contrib\admin\options.py"
in save_formset
892. formset.save()
File "C:\Users\mike\env\xxdx\lib\site-packages\django\forms\models.py"
in save
618. return self.save_existing_objects(commit) +
self.save_new_objects(commit)
File "C:\Users\mike\env\xxdx\lib\site-packages\django\forms\models.py"
in save_new_objects
747. self.new_objects.append(self.save_new(form,
commit=commit))
File "C:\Users\mike\env\xxdx\lib\site-packages\django\forms\models.py"
in save_new
877. obj.save()
File "C:\Users\mike\env\xxdx\ssds\substance\models\gas.py" in save
168. super(Gas, self).save(*args, **kwargs)
#########################################################
# here is the entire save method containing line 168 above
#
159 def save(self, *args, **kwargs):
160 self.get_oxidizing_comment()
161 if not self.n_equivalency:
162 casno = self.cas()
163 if casno:
164 try:
165 self.n_equivalency = N_EQUIVALENCY[casno]
166 except KeyError:
167 pass
168 super(Gas, self).save(*args, **kwargs)
169 if self.ozone:
170 sdsutils.insert_ozone_reg(self)
#
#########################################################
File "C:\Users\mike\env\xxdx\lib\site-packages\django\db\models\base.py"
in save
545. force_update=force_update,
update_fields=update_fields)
File "C:\Users\mike\env\xxdx\lib\site-packages\django\db\models\base.py"
in save_base
573. updated = self._save_table(raw, cls, force_insert,
force_update, using, update_fields)
File "C:\Users\mike\env\xxdx\lib\site-packages\django\db\models\base.py"
in _save_table
654. result = self._do_insert(cls._base_manager, using,
fields, update_pk, raw)
File "C:\Users\mike\env\xxdx\lib\site-packages\django\db\models\base.py"
in _do_insert
687. using=using, raw=raw)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\db\models\manager.py"
in _insert
232. return insert_query(self.model, objs, fields, **kwargs)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\db\models\query.py" in
insert_query
1514. return query.get_compiler(using=using).execute_sql(return_id)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\db\models\sql\compiler.py"
in execute_sql
903. cursor.execute(sql, params)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\db\backends\util.py" in
execute
69. return super(CursorDebugWrapper, self).execute(sql,
params)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\db\backends\util.py" in
execute
53. return self.cursor.execute(sql, params)
File "C:\Users\mike\env\xxdx\lib\site-packages\django\db\utils.py" in
__exit__
99. six.reraise(dj_exc_type, dj_exc_value, traceback)
File
"C:\Users\mike\env\xxdx\lib\site-packages\django\db\backends\util.py" in
execute
53. return self.cursor.execute(sql, params)
Exception Type: IntegrityError at /admin/substance/substance/17/
Exception Value: duplicate key value violates unique constraint
"substance_gas_substance_id_key"
DETAIL: Key (substance_id)=(22) already exists.
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