Thanks, Karen. You were right - I had overridden it. If I delete the
__unicode__ method it works now. What's odd is that I can't seem to
catch any exception. If I try the code below, the admin still breaks.
And what's also odd is that I never see my models.py file in the stack
trace.
def __unicode__(self):
try:
return self.document.url
except:
return u'File deleted'
Thanks,
-Dave
On Sep 25, 10:36 am, Karen Tracey <[email protected]> wrote:
> On Fri, Sep 25, 2009 at 9:05 AM, DavidA <[email protected]> wrote:
>
> > I'm getting this error when I try to remove an inline model instance
> > in the Django admin:
>
> > Traceback:
> > File "C:\Python25\lib\site-packages\django\core\handlers\base.py"
> > in get_response
> > 92. response = callback(request, *callback_args,
> > **callback_kwargs)
> > File "C:\Python25\lib\site-packages\django\contrib\admin\sites.py"
> > in root
> > 490. return self.model_page(request, *url.split
> > ('/', 2))
> > File "C:\Python25\lib\site-packages\django\views\decorators
> > \cache.py" in _wrapped_view_func
> > 44. response = view_func(request, *args, **kwargs)
> > File "C:\Python25\lib\site-packages\django\contrib\admin\sites.py"
> > in model_page
> > 509. return admin_obj(request, rest_of_url)
> > File "C:\Python25\lib\site-packages\django\contrib\admin
> > \options.py" in __call__
> > 1098. return self.change_view(request, unquote(url))
> > File "C:\Python25\lib\site-packages\django\db\transaction.py" in
> > _commit_on_success
> > 240. res = func(*args, **kw)
> > File "C:\Python25\lib\site-packages\django\contrib\admin
> > \options.py" in change_view
> > 835. change_message =
> > self.construct_change_message(request, form, formsets)
> > File "C:\Python25\lib\site-packages\django\contrib\admin
> > \options.py" in construct_change_message
> > 535. 'object':
> > force_unicode(deleted_object)})
> > File "C:\Python25\Lib\site-packages\django\utils\encoding.py" in
> > force_unicode
> > 71. s = unicode(s)
> > File "C:\private\src\itweb\..\itweb\controls\models.py" in
> > __unicode__
> > 160. return self.document.url
>
> You don't include this __unicode__ method in the code below, but this is
> likely where the problem is. What the admin is trying to log is the unicode
> value of your deleted object. I think you need to change your model's
> unicode method so that it does not trigger an exception when it is called
> for an instance that has no associated file.
>
> Karen
>
>
>
> > File "C:\Python25\lib\site-packages\django\db\models\fields
> > \files.py" in _get_url
> > 68. self._require_file()
> > File "C:\Python25\lib\site-packages\django\db\models\fields
> > \files.py" in _require_file
> > 46. raise ValueError("The '%s' attribute has no file
> > associated with it." % self.field.name)
>
> > Exception Type: ValueError at /admin/controls/review/24/
> > Exception Value: The 'document' attribute has no file associated
> > with it.
>
> > I can see that the file is being deleted on disk, but then it looks
> > like this error is being thrown when the admin is trying to display a
> > summary message of what was done, and that triggers a _require_file()
> > call which raises an exception.
>
> > I have the following models:
>
> > class Review(models.Model):
> > name = models.CharField(max_length=80)
> > review_type = models.CharField(max_length=20,
> > choices=REVIEW_TYPE_CHOICES)
> > frequency = models.CharField(max_length=20,
> > choices=FREQUENCY_CHOICES,
> > null=True, blank=True)
> > description = models.TextField(null=True, blank=True)
>
> > class Evidence(models.Model):
> > review = models.ForeignKey(Review)
> > review_time = models.DateTimeField(null=True, blank=True)
> > reviewed_by = models.ForeignKey(User, null=True, blank=True)
> > document = models.FileField(upload_to='evidence/%Y/%m/%d')
>
> > And admin classes:
>
> > class EvidenceInline(admin.TabularInline):
> > model = Evidence
>
> > class ReviewAdmin(admin.ModelAdmin):
> > list_display = ['name', 'review_type', 'frequency',
> > 'description']
> > list_filter = ['review_type', 'frequency']
> > search_fields = ['name', 'description']
> > fieldsets = [
> > (None, {'fields':['name', 'review_type',
> > 'frequency']}),
> > ('Details', {'fields':['description']}),
> > ]
> > inlines = [EvidenceInline]
>
> > admin.site.register(Review, ReviewAdmin)
>
> > Am I doing something wrong?
>
> > Thanks,
> > -Dave
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