Hello together,
I have overriden the models.Model.save method and added a parameter
called 'user', so that each save-call of an object will store the
creation date/author and update date/user:
class Model(models.Model):
class Meta:
abstract = True
def save(self, user, force_insert=False, force_update=False):
now = datetime.datetime.now()
if not self.id:
self.created = now
self.created_by = user
self.updated = now
self.updated_by = user
super(Model, self).save(user)
In our projects, we always have these four timestamp fields, and I
want them to be filled out automatically. That works fine so far, but
when I use a TabularInline view for an object's ModelAdmin, a save
causes the following traceback:
File "/storage/virtualenvs/teagarden/lib/python2.6/site-packages/
Django-1.1.1-py2.6.egg/django/core/handlers/base.py" in get_response
92. response = callback(request, *callback_args,
**callback_kwargs)
File "/storage/virtualenvs/teagarden/lib/python2.6/site-packages/
Django-1.1.1-py2.6.egg/django/contrib/admin/options.py" in wrapper
226. return self.admin_site.admin_view(view)(*args,
**kwargs)
File "/storage/virtualenvs/teagarden/lib/python2.6/site-packages/
Django-1.1.1-py2.6.egg/django/views/decorators/cache.py" in
_wrapped_view_func
44. response = view_func(request, *args, **kwargs)
File "/storage/virtualenvs/teagarden/lib/python2.6/site-packages/
Django-1.1.1-py2.6.egg/django/contrib/admin/sites.py" in inner
186. return view(request, *args, **kwargs)
File "/storage/virtualenvs/teagarden/lib/python2.6/site-packages/
Django-1.1.1-py2.6.egg/django/db/transaction.py" in _commit_on_success
240. res = func(*args, **kw)
File "/storage/virtualenvs/teagarden/lib/python2.6/site-packages/
Django-1.1.1-py2.6.egg/django/contrib/admin/options.py" in add_view
737. self.save_formset(request, form, formset,
change=False)
File "/storage/virtualenvs/teagarden/lib/python2.6/site-packages/
Django-1.1.1-py2.6.egg/django/contrib/admin/options.py" in
save_formset
563. formset.save()
File "/storage/virtualenvs/teagarden/lib/python2.6/site-packages/
Django-1.1.1-py2.6.egg/django/forms/models.py" in save
522. return self.save_existing_objects(commit) +
self.save_new_objects(commit)
File "/storage/virtualenvs/teagarden/lib/python2.6/site-packages/
Django-1.1.1-py2.6.egg/django/forms/models.py" in save_new_objects
657. self.new_objects.append(self.save_new(form,
commit=commit))
File "/storage/virtualenvs/teagarden/lib/python2.6/site-packages/
Django-1.1.1-py2.6.egg/django/forms/models.py" in save_new
760. obj.save()
Exception Type: TypeError at /admin/teagarden/group/add/
Exception Value: save() takes at least 2 arguments (1 given)
Well that's quite clear: the TabularInline model calls a save_formset
method which itself triggers save_new, which I cannot override or at
last, will not be overriden by my models.Model abstract class. I guess
I should'nt alter the methods header by adding parameters, so is there
another way to automatically save such timestap fields? I searched a
long time for other solutions, but most of them use similar mechanisms
as far as I can see it.
Thanks in advance,
Henning
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