text: from django.core.exceptions import SuspiciousOperation
  
  
  class DisallowedModelAdminLookup(SuspiciousOperation):
      """Invalid filter was passed to admin view via URL querystring"""
  
      pass
  
  
  class DisallowedModelAdminToField(SuspiciousOperation):
      """Invalid to_field was passed to admin view via URL query string"""
  
      pass
  