old_contents: from django.contrib import admin
  
  from .models import Station, Route, StationStop, StopTime
  
  class StationAdmin(admin.ModelAdmin):
      pass
  
  class RouteAdmin(admin.ModelAdmin):
      pass
  
  class StationStopAdmin(admin.ModelAdmin):
      list_display = ('station', 'order_nr')
  
  
  class StopTimeAdmin(admin.ModelAdmin):
      pass
  
  admin.site.register(Station, StationAdmin)
  admin.site.register(Route, RouteAdmin)
  admin.site.register(StationStop, StationStopAdmin)
  admin.site.register(StopTime, StopTimeAdmin)
  
new_contents: from django.contrib import admin
  
  from .models import Station, Route, StationStop, StopTime, GeoLocation
  
  class StationAdmin(admin.ModelAdmin):
      pass
  
  class GeoLocationAdmin(admin.ModelAdmin):
      pass
  
  class RouteAdmin(admin.ModelAdmin):
      pass
  
  class StationStopAdmin(admin.ModelAdmin):
      list_display = ('station', 'order_nr')
  
  class StopTimeAdmin(admin.ModelAdmin):
      pass
  
  
  admin.site.register(Station, StationAdmin)
  admin.site.register(Route, RouteAdmin)
  admin.site.register(StationStop, StationStopAdmin)
  admin.site.register(StopTime, StopTimeAdmin)
  admin.site.register(GeoLocation, GeoLocationAdmin)
  
subject: add GeoLocation to admin