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egg-i18n\n\n[![NPM version][npm-image]][npm-url]\n[![build status][travis-image]][travis-url]\n[![Test coverage][codecov-image]][codecov-url]\n[![David deps][david-image]][david-url]\n[![Known Vulnerabilities][snyk-image]][snyk-url]\n[![npm download][download-image]][download-url]\n\n[npm-image]: https://img.shields.io/npm/v/egg-i18n.svg?style=flat-square\n[npm-url]: https://npmjs.org/package/egg-i18n\n[travis-image]: https://img.shields.io/travis/eggjs/egg-i18n.svg?style=flat-square\n[travis-url]: https://travis-ci.org/eggjs/egg-i18n\n[codecov-image]: https://codecov.io/github/eggjs/egg-i18n/coverage.svg?branch=master\n[codecov-url]: https://codecov.io/github/eggjs/egg-i18n?branch=master\n[david-image]: https://img.shields.io/david/eggjs/egg-i18n.svg?style=flat-square\n[david-url]: https://david-dm.org/eggjs/egg-i18n\n[snyk-image]: https://snyk.io/test/npm/egg-i18n/badge.svg?style=flat-square\n[snyk-url]: https://snyk.io/test/npm/egg-i18n\n[download-image]: https://img.shields.io/npm/dm/egg-i18n.svg?style=flat-square\n[download-url]: https://npmjs.org/package/egg-i18n\n\n可以为你的应用提供多语言的特性\n\n## 功能\n\n- 支持多种语言独立配置，统一存放在 config/locale/\\*.js 下（ 兼容 `config/locales/*.js` ）；\n- 提供 Middleware 为 View 提供 `\\_\\_`, `gettext` 函数获取多语言文案；\n- 基于 URL 参数 `locale` 修改语言显示，同时会记录到 Cookie，下次请求会用 Cookie 里面的语言方案。\n\n## 配置\n\n默认处于关闭状态，你需要在 `config/plugin.js` 开启它：\n\n```js\n// config/plugin.js\nexports.i18n = {\n enable: true,\n package: 'egg-i18n',\n};\n```\n\n你可以修改 `config/config.default.js` 来设定 i18n 的配置项：\n\n```js\n// config/config.default.js\nexports.i18n = {\n // 默认语言，默认 \"en_US\"\n defaultLocale: 'zh-CN',\n // URL 参数，默认 \"locale\"\n queryField: 'locale',\n // Cookie 记录的 key, 默认：\"locale\"\n cookieField: 'locale',\n // Cookie 的 domain 配置，默认为空，代表当前域名有效\n cookieDomain: '',\n // Cookie 默认 `1y` 一年后过期， 如果设置为 Number，则单位为 ms\n cookieMaxAge: '1y',\n};\n```\n\n其实大部分时候，你只需要修改一下 `defaultLocale` 设定默认的语言。\n\n## 编写你的 I18n 多语言文件\n\n```js\n// config/locale/zh-CN.js\nmodule.exports = {\n \"Email\": \"邮箱\",\n \"Welcome back, %s!\": \"欢迎回来，%s!\",\n \"Hello %s, how are you today?\": \"你好 %s, 今天过得咋样？\",\n};\n```\n\n```js\n// config/locale/en-US.js\nmodule.exports = {\n \"Email\": \"Email\",\n};\n```\n\n或者也可以用 JSON 格式的文件：\n\n```json\n// config/locale/zh-CN.json\n{\n \"email\": \"邮箱\",\n \"login\": \"帐号\",\n \"createdAt\": \"注册时间\"\n}\n```\n\n## 使用 I18n 函数获取语言文本\n\nI18n 为你提供 `__` (Alias: `gettext`) 函数，让你可以轻松获得 locale 文件夹下面的多语言文本。\n\n> NOTE: __ 是两个下划线哦！\n\n- ctx.__ = function (key, value[, value2, ...]): 类似 util.format 接口\n- ctx.__ = function (key, values): 支持数组下标占位符方式，如\n\n```js\nctx.__('{0} {0} {1} {1}'), ['foo', 'bar'])\nctx.gettext('{0} {0} {1} {1}'), ['foo', 'bar'])\n=>\nfoo foo bar bar\n```\n\n### Controllers 下的使用示例\n\n```js\nmodule.exports = function* () {\n this.body = {\n message: this.__('Welcome back, %s!', this.user.name)\n // 或者使用 gettext，如果觉得 __ 不好看的话\n // message: this.gettext('Welcome back, %s!', this.user.name)\n user: this.user,\n };\n};\n```\n\n### View 文件下的使用示例\n\n```html\n
  • {{ __('Email') }}: {{ user.email }}
    • \n
  • \n {{ __('Hello %s, how are you today?', user.name) }}\n
    • \n
  • \n {{ __('{0} {0} {1} {1}'), ['foo', 'bar']) }}\n
    • \n```\n\n### 修改应用的默认语言\n\n你可以用下面几种方式修改应用的当前语言（修改或会记录到 Cookie)，下次请求直接用设定好的语言。\n\n优先级从上到下：\n\n- query: /?locale=en-US\n- cookie: locale=zh-TW\n- header: Accept-Language: zh-CN,zh;q=0.5\n","_attachments":{},"homepage":"https://github.com/eggjs/egg-i18n#readme","bugs":{"url":"https://github.com/eggjs/egg-i18n/issues"},"license":"MIT"}