text: from django.db import models
  
  
  class IntegerRangeField(models.IntegerField):
      def __init__(self, verbose_name=None, name=None, min_value=None, max_value=None, **kwargs):
          self.min_value, self.max_value = min_value, max_value
          models.IntegerField.__init__(self, verbose_name, name, **kwargs)
      def formfield(self, **kwargs):
          defaults = {'min_value': self.min_value, 'max_value':self.max_value}
          defaults.update(kwargs)
          return super(IntegerRangeField, self).formfield(**defaults)