old_contents: from django.contrib import admin
  
  from .models import Lobbyist
  
  
  class LobbyistAdmin(admin.ModelAdmin):
      readonly_fields = ('slug',)
  
  
  admin.site.register(Lobbyist)
  
new_contents: from django.contrib import admin
  
  from .models import Lobbyist
  
  
  class LobbyistAdmin(admin.ModelAdmin):
      readonly_fields = ('slug', 'source', 'raw_data')
  
  
  admin.site.register(Lobbyist, LobbyistAdmin)
  
subject: Tweak lobbyists admin