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---
title: 翻译
description: 以多种语言发布你的应用——通过一个 locales 目录翻译 manifest 标签和 UI 字符串。
icon: language
---
Twenty 应用均以**英文**编写:你的源码和 manifest 中的字符串
是英文源文本,`en` 是你进行翻译时的源语言环境,任何未被翻译的语言环境都会回退到它。
你的应用有两类可翻译文本,并且它们都通过同一个
`locales/` 目录:
* **Manifest labels** —— 对象和字段名称、视图标题、菜单项,以及
在应用元数据中声明的其他字符串。
* **前端组件字符串** —— 你的 React 前端组件渲染的 UI 文本。
你标记可翻译字符串,将它们提取到按语言环境划分的目录中,翻译这些目录,然后构建过程会为当前用户提供正确的语言——无需额外配置。
## 标记前端组件字符串
从 `twenty-sdk/front-component` 中导入翻译辅助函数:
```tsx
import { Trans, t, msg, useTranslate } from 'twenty-sdk/front-component';
const STATUSES = [
{ id: 'draft', label: msg('Draft') },
{ id: 'sent', label: msg('Sent') },
];
const Card = ({ count, name }: { count: number; name: string }) => {
const { t } = useTranslate();
return (
<section>
{/* Static text — reactive to the user's locale */}
<Trans>Loading postcard…</Trans>
{/* Disambiguate identical sources with a context */}
<Trans context="card-title">Untitled</Trans>
{/* Interpolation: pass values explicitly */}
<p>{t('Hi {name}', { name })}</p>
<p>{t('Saved {count} cards', { count })}</p>
{/* Resolve a lazily-declared descriptor */}
<ul>{STATUSES.map((s) => <li key={s.id}>{t(s.label)}</li>)}</ul>
</section>
);
};
```
### 何时使用哪一种
* **`Trans`** —— JSX 中的静态文本。 使用 `message` 和 `values` 属性进行插值,如 `Trans message="Hi {name}" values={{ name }}`;直接在子节点中插值无法被静态提取。
* **`useTranslate().t`** —— 组件内部的动态字符串。 当用户切换语言时会重新渲染。 在渲染逻辑中优先使用这个。
* **`t(...)`**(直接导入)—— 可在**任何地方**使用的即时翻译,包括事件处理函数、辅助函数和模块作用域——不仅仅在渲染逻辑中。
* **`msg(...)`** —— 以数据形式(常量、配置)声明字符串的惰性描述符。 在之后通过 `t(descriptor)` 来解析它。
### 上下文
传入 `context` 以区分那些源字符串相同但译法不同的情况:
```tsx
t({ message: 'Open', context: 'door' });
t({ message: 'Open', context: 'window' });
<Trans context="card-title">Untitled</Trans>
```
在区域设置目录中,上下文字符串会作为一组内容出现,其键为对应的上下文:`"\<context>": { "\<message>": "\<translation>" }`。 清单(Manifest)标签在结构上就是带有上下文的——每个标签都携带其所扮演的元数据角色(`objectMetadata.labelSingular`、`fieldMetadata.label`、`view.name` 等),因此同一个词在作为对象名称和作为视图名称时,可以有不同的翻译。
## 提取和翻译
在你的应用目录中运行提取命令:
```bash
twenty dev:translations-extract # collect strings into locales/en.json
twenty dev:translations-extract --locale fr-FR # also scaffold a target locale
```
提取会收集你的 manifest 标签以及前端组件源码中的 `t()`/`msg()`/`Trans` 字符串,并将它们放入 `locales/\<locale>.json` 中,以源字符串作为键。 填写翻译:
```json
// locales/fr-FR.json
{
"Loading postcard…": "Chargement de la carte…",
"Hi {name}": "Bonjour {name}",
"Saved {count} cards": "{count} cartes enregistrées",
"door": {
"Open": "Ouvrir"
},
"objectMetadata.labelSingular": {
"Postcard": "Carte postale"
}
}
```
无上下文字符串是扁平条目;有上下文字符串——包括每个清单标签——都嵌套在其上下文键下。
像 `{name}` 这样的占位符会在运行时被替换——请在翻译中保留它们。 任何留空的字符串都会回退到源文本。
## 运行方式
`twenty dev:build` 会编译目录并为当前用户提供正确的语言:manifest 标签在服务端解析,前端组件目录被打包进每个组件 bundle 中。 在运行时,组件会从其执行上下文(宿主的当前语言)中读取语言环境,并将每个字符串在其目录中解析,当翻译缺失时回退到源文本。 在宿主中切换语言会实时重新渲染 `Trans` 和 `useTranslate().t` 的字符串。
清单标签会在每次同步时编译——`twenty dev:build`、`twenty apply`
以及持续监视的 `twenty dev` 都是如此——因此,编辑区域设置文件并
同步即可看到新文本。 Front 组件目录会在构建时被嵌入到
每个组件包中,因此更改其中之一仍意味着
需要重新运行 `twenty dev:build`(并重新部署)。
`Trans` 的文本子节点可以跨多行——空白会以与 JSX 相同的方式被折叠,因此这两种写法都会被提取为键 `Welcome back`:
```tsx
<Trans>Welcome back</Trans>
<Trans>
Welcome
back
</Trans>
```