Opened 15 years ago

Last modified 15 years ago

#10313 closed

TypeError coercing to Unicode on DateTime Field — at Initial Version

Reported by: pvickers Owned by: nobody
Component: Uncategorized Version: 1.0
Severity: Keywords:
Cc: Triage Stage: Unreviewed
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no

Description

The error I'm getting is
TypeError at /admin/dbasite/dbeventhistory/add/

coercing to Unicode: need string or buffer, datetime.datetime found

This occurs after doing a simple add using the automatically generated code by the Django admin interface.

I'm running Django 1.0, using cx_Oracle to connect to an Oracle database.
The cx_Oracle I have installed is version 5.0.1 but this exact same error also happens using version 4.4.
I have reproduced this error using Oracle 9i and Oracle 10g. On Oracle 10g, I tested using Oracle characterset WE8ISO8859P1 and UTF8 - the error still occurs.

I have a very simple model defined as:
class DBEventHistory(models.Model):

event_date = models.DateTimeField()
description = models.CharField(max_length=1024)
dba = models.ForeignKey(DBA)

def unicode(self):

return self.event_date

class Meta:

db_table = u'DB_EVENT_HISTORY'
verbose_name_plural = ('DB Event History')

The trace back I get is:
Environment:

Request Method: POST
Request URL: ​http://cls049:8000/admin/dbasite/dbeventhistory/add/
Django Version: 1.0-final-SVN-unknown
Python Version: 2.4.3
Installed Applications:
['django.contrib.auth',

'django.contrib.admin',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'dbinfo.dbasite']

Installed Middleware:
('django.middleware.common.CommonMiddleware',

'django.contrib.sessions.middleware.SessionMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware')

Traceback:
File "/usr/lib/python2.4/site-packages/django/core/handlers/base.py" in get_response

  1. response = callback(request, *callback_args, callback_kwargs)

File "/usr/lib/python2.4/site-packages/django/contrib/admin/sites.py" in root

  1. return self.model_page(request, *url.split('/', 2))

File "/usr/lib/python2.4/site-packages/django/views/decorators/cache.py" in _wrapped_view_func

  1. response = view_func(request, *args, kwargs)

File "/usr/lib/python2.4/site-packages/django/contrib/admin/sites.py" in model_page

  1. return admin_obj(request, rest_of_url)

File "/usr/lib/python2.4/site-packages/django/contrib/admin/options.py" in call

  1. return self.add_view(request)

File "/usr/lib/python2.4/site-packages/django/db/transaction.py" in _commit_on_success

  1. res = func(*args, kw)

File "/usr/lib/python2.4/site-packages/django/contrib/admin/options.py" in add_view

  1. self.log_addition(request, new_object)

File "/usr/lib/python2.4/site-packages/django/contrib/admin/options.py" in log_addition

  1. object_repr = force_unicode(object),

File "/usr/lib/python2.4/site-packages/django/utils/encoding.py" in force_unicode

  1. s = unicode(s)

Exception Type: TypeError at /admin/dbasite/dbeventhistory/add/
Exception Value: coercing to Unicode: need string or buffer, datetime.datetime found

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