new_contents: from django.contrib import admin
  
  from travel.models import Travel, TravelPersonPosition
  
  
  class TravelModel(admin.ModelAdmin):
      list_display = (
          'id',
          'person',
          'destination',
          'purpose',
          'paid_by',
          'date_begin',
          'date_end',
      )
  
  
  class TravelPersonPositionModel(admin.ModelAdmin):
      list_display = (
          'id',
          'person',
          'party',
          'parliament_member',
          'date',
      )
  
  
  admin.site.register(Travel, TravelModel)
  admin.site.register(TravelPersonPosition, TravelPersonPositionModel)
  
subject: Add travel admin views