Checks for a DEFAULT_ALPHABET attribute in the ModelAdmin class, and accepts a callable
Checks for a DEFAULT_ALPHABET attribute in the ModelAdmin class, and accepts a callable

affan2/django-alphabetfilter,bltravis/django-alphabetfilter,affan2/django-alphabetfilter,bltravis/django-alphabetfilter,bltravis/django-alphabetfilter,affan2/django-alphabetfilter