I think the 'core=true' option is used when you're defining a lookup field that is to be edited on another object's page.
In the model api docs it says that 'blank = True' is the option you want to use to make entry optional, otherwise field is required to be entered, i.e., non-blank: http://www.djangoproject.com/documentation/model_api/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users -~----------~----~----~----~------~----~------~--~---