Thank you! Solved. On Mon, Jun 28, 2010 at 4:14 PM, Jeff Green <jeffhg2...@gmail.com> wrote:
> You need to also state that null=True. Also, you want to have ensure that > the field defined in your db > allows null values. > > On Mon, Jun 28, 2010 at 3:19 PM, Jonathan Hayward < > christos.jonathan.hayw...@gmail.com> wrote: > >> I have a model with two foreign keys to itself: >> >> department = models.ForeignKey(u'self', blank = True, related_name = >> u'member') >> reports_to = models.ForeignKey(u'self', blank = True, related_name = >> u'subordinate') >> >> When I tried to save test data from the admin interface, leaving those >> items blank, I got a ValueError, pasted below. What do I need to be able to >> save test data? I'm willing to assign non-blank values to those fields for >> now, but there's a chicken-and-egg problem if the admin interface won't let >> me save any instances until I already have an instance saved. >> >> ValueError at /admin/directory/entity/add/ >> >> Cannot assign None: "Entity.department" does not allow null values. >> >> Request Method: POST Request URL: >> http://linux:8000/admin/directory/entity/add/ Exception Type: ValueError >> Exception >> Value: >> >> Cannot assign None: "Entity.department" does not allow null values. >> >> Exception Location: >> /usr/lib/pymodules/python2.6/django/db/models/fields/related.py >> in __set__, line 269 Python Executable: /usr/bin/python Python Version: >> 2.6.5 Python Path: ['/home/jonathan/directory', >> '/usr/local/lib/python2.6/dist-packages/pip-0.6.3-py2.6.egg', >> '/home/jonathan/store/src/satchmo/satchmo/apps', >> '/usr/local/lib/python2.6/dist-packages/django_threaded_multihost-1.3_3-py2.6.egg', >> '/usr/local/lib/python2.6/dist-packages/django_signals_ahoy-0.1_1-py2.6.egg', >> '/usr/local/lib/python2.6/dist-packages/django_tagging-0.3.1-py2.6.egg', >> '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', >> '/usr/lib/python2.6/lib-tk', '/usr/lib/python2.6/lib-old', >> '/usr/lib/python2.6/lib-dynload', '/usr/lib/python2.6/dist-packages', >> '/usr/lib/python2.6/dist-packages/PIL', >> '/usr/lib/python2.6/dist-packages/gst-0.10', '/usr/lib/pymodules/python2.6', >> '/usr/lib/python2.6/dist-packages/gtk-2.0', >> '/usr/lib/pymodules/python2.6/gtk-2.0', >> '/usr/local/lib/python2.6/dist-packages'] Server time: Mon, 28 Jun 2010 >> 15:13:53 -050 >> >> -- >> → Jonathan Hayward, christos.jonathan.hayw...@gmail.com >> → An Orthodox Christian author: theology, literature, et cetera. >> → My award-winning collection is available for free reading online: >> ☩ I invite you to visit my main site at >> http://JonathansCorner.com/<http://jonathanscorner.com/> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Django users" group. >> To post to this group, send email to django-us...@googlegroups.com. >> To unsubscribe from this group, send email to >> django-users+unsubscr...@googlegroups.com<django-users%2bunsubscr...@googlegroups.com> >> . >> For more options, visit this group at >> http://groups.google.com/group/django-users?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To post to this group, send email to django-us...@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com<django-users%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > -- → Jonathan Hayward, christos.jonathan.hayw...@gmail.com → An Orthodox Christian author: theology, literature, et cetera. → My award-winning collection is available for free reading online: ☩ I invite you to visit my main site at http://JonathansCorner.com/ -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
