old_contents: from django.contrib import admin
  from .models import (
  SuratIzinPenelitianMahasiswa,
  PetugasAdmininistrasi,
  StrukturManajemen,
  )
  
  # Register your models here.
  admin.site.register(SuratIzinPenelitianMahasiswa)
  admin.site.register(PetugasAdmininistrasi)
  admin.site.register(StrukturManajemen)
  
new_contents: from django.contrib import admin
  from .models import (
  SuratIzinPenelitianMahasiswa,
  PetugasAdmininistrasi,
  StrukturManajemen,
  )
  
  class SuratIzinPenelitianMahasiswaAdmin(admin.ModelAdmin):
     list_display = ('petugas', 'mahasiswa')
     search_fields = ['petugas']
  
  # Register your models here.
  admin.site.register(SuratIzinPenelitianMahasiswa, SuratIzinPenelitianMahasiswaAdmin)
  admin.site.register(PetugasAdmininistrasi)
  admin.site.register(StrukturManajemen)
  
subject: add filter petugas