Nuxt.js hooks 属性
hooks 属性
- 类型: Objecthooks是Nuxt事件的监听器,这些事件通常在Nuxt模块中使用,但也可以在nuxt.config.js中使用。了解更多
例如 (nuxt.config.js):
import fs from 'fs'
import path from 'path'
export default {
hooks: {
build: {
done (builder) {
const extraFilePath = path.join(builder.nuxt.options.buildDir, 'extra-file')
fs.writeFileSync(extraFilePath, 'Something extra')
}
}
}
}
在内部,hooks遵循使用冒号的命名模式(例如,build:done)。为了便于配置,当使用nuxt.config.js(如上所示)设置自己的钩子时,可以将它们构造为分层对象。有关它们如何工作的更多详细信息,请参考Nuxt Internals。
hooks 列表
例子
不在root上时重定向到 router.base
Let´s say you want to serve pages as /portal instead of /. 假设您希望将页面作为 /portal 而不是 / 来提供。 这可能是一个边缘情况, _nuxt.config.js_’ router.base用于当Web服务器,服务Nuxt而不是域根目录时。
但是当在本地开发时,遇到 _localhost_,当router.base不是 / 返回404时。为了防止这种情况,你可以设置一个Hook。
也许重定向不是生产网站的最佳用例,但这将有助于您利用Hooks。
首先,你可以 改变 router.base;更新你的nuxt.config.js:
// nuxt.config.js
import hooks from './hooks'
export default {
router: {
base: '/portal'
}
hooks: hooks(this)
}
然后,创建一些文件;
- hooks/index.js, Hooks 模块
// file: hooks/index.js
import render from './render'
export default nuxtConfig => ({
render: render(nuxtConfig)
})
2. hooks/render.js
, 渲染 hook
// file: hooks/render.js
import redirectRootToPortal from './route-redirect-portal'
export default (nuxtConfig) => {
const router = Reflect.has(nuxtConfig, 'router') ? nuxtConfig.router : {}
const base = Reflect.has(router, 'base') ? router.base : '/portal'
return {
/**
* 'render:setupMiddleware'
* {@link node_modules/nuxt/lib/core/renderer.js}
*/
setupMiddleware (app) {
app.use('/', redirectRootToPortal(base))
}
}
}
3. hooks/route-redirect-portal.js
, 中间件本身
// file: hooks/route-redirect-portal.js
/**
* Nuxt middleware hook to redirect from / to /portal (or whatever we set in nuxt.config.js router.base)
*
* Should be the same version as connect
* {@link node_modules/connect/package.json}
*/
import parseurl from 'parseurl'
/**
* Connect middleware to handle redirecting to desired Web Applicatin Context Root.
*
* Notice that Nuxt docs lacks explaning how to use hooks.
* This is a sample router to help explain.
*
* See nice implementation for inspiration:
* - https://github.com/nuxt/nuxt.js/blob/dev/examples/with-cookies/plugins/cookies.js
* - https://github.com/yyx990803/launch-editor/blob/master/packages/launch-editor-middleware/index.js
*
* [http_class_http_clientrequest]: https://nodejs.org/api/http.html#http_class_http_clientrequest
* [http_class_http_serverresponse]: https://nodejs.org/api/http.html#http_class_http_serverresponse
*
* @param {http.ClientRequest} req Node.js internal client request object [http_class_http_clientrequest]
* @param {http.ServerResponse} res Node.js internal response [http_class_http_serverresponse]
* @param {Function} next middleware callback
*/
export default desiredContextRoot =>
function projectHooksRouteRedirectPortal (req, res, next) {
const desiredContextRootRegExp = new RegExp(`^${desiredContextRoot}`)
const _parsedUrl = Reflect.has(req, '_parsedUrl') ? req._parsedUrl : null
const url = _parsedUrl !== null ? _parsedUrl : parseurl(req)
const startsWithDesired = desiredContextRootRegExp.test(url.pathname)
const isNotProperContextRoot = desiredContextRoot !== url.pathname
if (isNotProperContextRoot && startsWithDesired === false) {
const pathname = url.pathname === null ? '' : url.pathname
const search = url.search === null ? '' : url.search
const Location = desiredContextRoot + pathname + search
res.writeHead(302, {
Location
})
res.end()
}
next()
}
然后,每当开发中的同事到达开发Web开发服务/时,发生了意外情况,Nuxt将自动重定向到/portal