id,summary,reporter,owner,description,type,status,component,version,severity,resolution,keywords,cc,stage,has_patch,needs_docs,needs_tests,needs_better_patch,easy,ui_ux 21531,Django 1.6 forms.SlugField validation error,20tab,nobody,"Hi, I have a problem with SlugField. In my model I have this field: slug = models.SlugField(_(u'Slug'), blank=True, null=True) Adding an item through admin, django catches this error: Django Version: 1.6 Exception Type: AttributeError Exception Value: 'NoneType' object has no attribute 'strip' Exception Location: myvirtualenv/lib/python2.7/site-packages/django/forms/fields.py in clean, line 1142 Is this a bug or my fault? I tried the same code with django 1.5.5 and it works. Thanks",Bug,closed,Forms,1.6,Normal,invalid,,,Accepted,0,0,0,0,0,0