code: def get_value(self, context, obj, field_name):
          
          try:
              language = get_language()
              value = self.get_translated_value(obj, field_name, language)
              if value:
                  return value
              if self.FALLBACK:
                  for lang, lang_name in settings.LANGUAGES:
                      if lang == language:
                          # already tried this one...
                          continue
                      value = self.get_translated_value(obj, field_name, lang)
                      if value:
                          return value
              untranslated = getattr(obj, field_name)
              if self._is_truthy(untranslated):
                  return untranslated
              else:
                  return self.EMPTY_VALUE
          except Exception:
              if settings.TEMPLATE_DEBUG:
                  raise
              return self.EMPTY_VALUE
docs: gets the translated value of field name. If `FALLBACK`evaluates to `True` and the field
          has no translation for the current language, it tries to find a fallback value, using
          the languages defined in `settings.LANGUAGES`.