old_contents: # -*- coding: utf-8 -*-
  # This software is distributed under the two-clause BSD license.
  # Copyright (c) The django-ldapdb project
  
  from django.contrib import admin
  from examples.models import LdapGroup, LdapUser
  
  
  class LdapGroupAdmin(admin.ModelAdmin):
      exclude = ['dn', 'usernames', 'member']
      list_display = ['name', 'gid']
      search_fields = ['name']
  
  
  class LdapUserAdmin(admin.ModelAdmin):
      exclude = ['dn', 'password', 'photo']
      list_display = ['username', 'first_name', 'last_name', 'email', 'uid']
      search_fields = ['first_name', 'last_name', 'full_name', 'username']
  
  
  admin.site.register(LdapGroup, LdapGroupAdmin)
  admin.site.register(LdapUser, LdapUserAdmin)
  
new_contents: # -*- coding: utf-8 -*-
  # This software is distributed under the two-clause BSD license.
  # Copyright (c) The django-ldapdb project
  
  from django.contrib import admin
  from django import forms
  from django.contrib.admin.widgets import FilteredSelectMultiple
  from examples.models import LdapGroup, LdapUser
  
  
  class LdapUserAdmin(admin.ModelAdmin):
      exclude = ['dn', 'password', 'photo']
      list_display = ['username', 'first_name', 'last_name', 'email', 'uid']
      search_fields = ['first_name', 'last_name', 'full_name', 'username']
  
  
  class LdapGroupForm(forms.ModelForm):
      usernames = forms.ModelMultipleChoiceField(queryset=LdapUser.objects.all(), 
                                                 widget=FilteredSelectMultiple('Users', is_stacked=False),
                                                 required=False)
  
      class Meta:
          exclude = []
          model = LdapGroup
  
      def clean_usernames(self):
          data = self.cleaned_data['usernames']
          if not data:
              return []
          return list(data.values_list('username', flat=True))
  
  
  class LdapGroupAdmin(admin.ModelAdmin):
      form = LdapGroupForm 
      exclude = ['dn', 'usernames', 'member']
      list_display = ['name', 'gid']
      search_fields = ['name']
  
  
  admin.site.register(LdapGroup, LdapGroupAdmin)
  admin.site.register(LdapUser, LdapUserAdmin)
  
subject: improve example