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
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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