old_contents: from django import forms
  from django.db.models.fields import DecimalField
  import logging
  from widgets import CurrencyWidget
  
  log = logging.getLogger('satchmo_utils.fields')
  
  class CurrencyField(DecimalField):
  
      def __init__(self, *args, **kwargs):
          self.places = kwargs.pop('display_decimal', 2)
          super(CurrencyField, self).__init__(*args, **kwargs)
  
      def formfield(self, **kwargs):
          defaults = {
              'max_digits': self.max_digits,
              'decimal_places': self.decimal_places,
              'form_class': forms.DecimalField,
              'widget': CurrencyWidget,
          }
          defaults.update(kwargs)
          return super(CurrencyField, self).formfield(**defaults)
  
new_contents: from django import forms
  from django.db.models.fields import DecimalField
  import logging
  from widgets import CurrencyWidget
  
  log = logging.getLogger('satchmo_utils.fields')
  
  class CurrencyField(DecimalField):
  
      def __init__(self, *args, **kwargs):
          self.places = kwargs.pop('display_decimal', 2)
          super(CurrencyField, self).__init__(*args, **kwargs)
  
      def formfield(self, **kwargs):
          defaults = {
              'max_digits': self.max_digits,
              'decimal_places': self.decimal_places,
              'form_class': forms.DecimalField,
              'widget': CurrencyWidget,
          }
          defaults.update(kwargs)
          return super(CurrencyField, self).formfield(**defaults)
  
  try:
      # South introspection rules for our custom field.
      from south.modelsinspector import add_introspection_rules
  
      add_introspection_rules([(
          (CurrencyField, ),
          [],
          {
              'display_decimal': ["places", {"default": 2}],
          },
      )], ['satchmo_utils\.fields'])
  except ImportError:
      pass
  
subject: add introspection rules for CurrenyField