docs: def save_model(self, request, obj, form, change):
          """
          Save model for every language so that field auto-population
          is done for every each of it.
          """
          super(DisplayableAdmin, self).save_model(request, obj, form, change)
          if settings.USE_MODELTRANSLATION:
              lang = get_language()
              for code in OrderedDict(settings.LANGUAGES):
                  if code != lang:  # Already done
                      try:
                          activate(code)
                      except:
                          pass
                      else:
                          obj.save()
              activate(lang)