old_contents: # coding=utf-8
  # Copyright 2015 Brave Labs sp. z o.o.
  # All rights reserved.
  #
  # This source code and all resulting intermediate files are CONFIDENTIAL and
  # PROPRIETY TRADE SECRETS of Brave Labs sp. z o.o.
  # Use is subject to license terms. See NOTICE file of this project for details.
  from django.db import models
  from localflavor.pl import forms
  from django.utils.translation import ugettext as __, ugettext_lazy as _
  
  
  class PlRegonField(models.CharField):
      def __init__(self, *args, **kwargs):
          verbose_name = kwargs.pop('verbose_name', _("numer identyfikacyjny REGON"))
          max_length = kwargs.pop('max_length', 14)
          super().__init__(verbose_name=verbose_name, max_length=max_length, *args, **kwargs)
  
      def formfield(self, **kwargs):
          return super().formfield(form_class=forms.PLREGONField, **kwargs)
  
  
  class PlNipField(models.CharField):
      def __init__(self, *args, **kwargs):
          verbose_name = kwargs.pop('verbose_name', _("numer identyfikacji podatkowej"))
          max_length = kwargs.pop('max_length', 13)
          super().__init__(verbose_name=verbose_name, max_length=max_length, *args, **kwargs)
  
      def formfield(self, **kwargs):
          return super().formfield(form_class=forms.PLNIPField, **kwargs)
  
new_contents: # coding=utf-8
  # Copyright 2015 Brave Labs sp. z o.o.
  # All rights reserved.
  #
  # This source code and all resulting intermediate files are CONFIDENTIAL and
  # PROPRIETY TRADE SECRETS of Brave Labs sp. z o.o.
  # Use is subject to license terms. See NOTICE file of this project for details.
  from django.db import models
  from localflavor.pl import forms
  from django.utils.translation import ugettext as __, ugettext_lazy as _
  
  
  class PlRegonField(models.CharField):
      def __init__(self, *args, **kwargs):
          verbose_name = kwargs.pop('verbose_name', _("numer identyfikacyjny REGON"))
          max_length = kwargs.pop('max_length', 14)
          super().__init__(verbose_name=verbose_name, max_length=max_length, *args, **kwargs)
  
      def formfield(self, **kwargs):
          return super().formfield(form_class=forms.PLREGONField, **kwargs)
  
      def clean(self, value, model_instance):
          value = super().clean(value, model_instance)
          return value or None
  
  
  class PlNipField(models.CharField):
      def __init__(self, *args, **kwargs):
          verbose_name = kwargs.pop('verbose_name', _("numer identyfikacji podatkowej"))
          max_length = kwargs.pop('max_length', 13)
          super().__init__(verbose_name=verbose_name, max_length=max_length, *args, **kwargs)
  
      def formfield(self, **kwargs):
          return super().formfield(form_class=forms.PLNIPField, **kwargs)
  
      def clean(self, value, model_instance):
          value = super().clean(value, model_instance)
          return value or None
  
  
subject: clean '' into None