# libre\_translate.rb 插件中的未定义变量 'target\_locale' - Discourse Translator

**URL:** <https://meta.discourse.org/t/undefined-variable-target-locale-in-libre-translate-rb-plugin-discourse-translator/355481>\
**Category:** Bug\
**Tags:** translator\
**Created:** [2025年三月3日 16:34 UTC](https://meta.discourse.org/t/undefined-variable-target-locale-in-libre-translate-rb-plugin-discourse-translator/355481 "2025-03-03T16:34:17Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![dorina](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/dorina/32/490279_2.png) [@dorina](https://meta.discourse.org/u/dorina)\
**Post date:** [2025年三月3日 16:34 UTC](https://meta.discourse.org/t/undefined-variable-target-locale-in-libre-translate-rb-plugin-discourse-translator/355481/1 "2025-03-03T16:34:17Z")

</div>

我安装了 Discourse Translator 并尝试将其与我自托管的 LibreTranslate 实例一起使用。它不起作用，并且出现了以下回溯：

```plaintext
NameError (未定义局部变量或方法 `target_locale' for class DiscourseTranslator::LibreTranslate)
app/controllers/application_controller.rb:427:in `block in with_resolved_locale'
app/controllers/application_controller.rb:427:in `with_resolved_locale'
lib/middleware/omniauth_bypass_middleware.rb:35:in `call'
lib/middleware/csp_script_nonce_injector.rb:12:in `call'
lib/middleware/anonymous_cache.rb:409:in `call'
lib/middleware/csp_script_nonce_injector.rb:12:in `call'
config/initializers/008-rack-cors.rb:14:in `call'
config/initializers/100-quiet_logger.rb:20:in `call'
config/initializers/100-silence_logger.rb:29:in `call'
lib/middleware/enforce_hostname.rb:24:in `call'
lib/middleware/processing_request.rb:12:in `call'
lib/middleware/request_tracker.rb:385:in `call'

Backtrace

plugins/discourse-translator/app/services/discourse_translator/libre_translate.rb:107:in `block in translate!'
plugins/discourse-translator/app/services/discourse_translator/base.rb:82:in `save_translation'
plugins/discourse-translator/app/services/discourse_translator/libre_translate.rb:101:in `translate!'
plugins/discourse-translator/app/services/discourse_translator/base.rb:51:in `translate'
plugins/discourse-translator/app/controllers/discourse_translator/translator_controller.rb:44:in `translate'
actionpack (7.2.2.1) lib/action_controller/metal/basic_implicit_render.rb:8:in `send_action'
actionpack (7.2.2.1) lib/abstract_controller/base.rb:226:in `process_action'
actionpack (7.2.2.1) lib/action_controller/metal/rendering.rb:193:in `process_action'
actionpack (7.2.2.1) lib/abstract_controller/callbacks.rb:261:in `block in process_action'
activesupport (7.2.2.1) lib/active_support/callbacks.rb:121:in `block in run_callbacks'
app/controllers/application_controller.rb:427:in `block in with_resolved_locale'
i18n (1.14.7) lib/i18n.rb:353:in `with_locale'

```

检查代码：

```plaintext
    def self.translate!(translatable, target_locale_sym = I18n.locale)
      detected_lang = detect(translatable)

      save_translation(translatable, target_locale_sym) do
        res =
          result(
            translate_uri,
            q: text_for_translation(translatable),
            source: detected_lang,
            target: SUPPORTED_LANG_MAPPING[target_locale],
            format: "html",
          )
        res["translatedText"]
      end
    end

```

特别是第 107 行：

```plaintext
target: SUPPORTED_LANG_MAPPING[target_locale]

```

→ 似乎应该是 ‘target\_locale\_sym’ 而不是 ‘target\_locale’，或者我错了？

我手动将其更改为：**target: SUPPORTED\_LANG\_MAPPING[target\_locale\_sym],** 保存并重新启动应用程序后，它就奏效了。

---

_[View the full topic](https://meta.discourse.org/t/undefined-variable-target-locale-in-libre-translate-rb-plugin-discourse-translator/355481)._