mirror of
https://github.com/terribleplan/next.js.git
synced 2024-01-19 02:48:18 +00:00
47 lines
1.3 KiB
JavaScript
47 lines
1.3 KiB
JavaScript
import Document, { Head, Main, NextScript } from 'next/document'
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import Helmet from 'react-helmet'
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export default class extends Document {
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static async getInitialProps (...args) {
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const documentProps = await super.getInitialProps(...args)
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// see https://github.com/nfl/react-helmet#server-usage for more information
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// 'head' was occupied by 'renderPage().head', we cannot use it
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return { ...documentProps, helmet: Helmet.rewind() }
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}
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// should render on <html>
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get helmetHtmlAttrComponents () {
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return this.props.helmet.htmlAttributes.toComponent()
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}
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// should render on <head>
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get helmetHeadComponents () {
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return Object.keys(this.props.helmet)
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.filter(el => el !== 'htmlAttributes') // remove htmlAttributes which is not for <head> but for <html>
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.map(el => this.props.helmet[el].toComponent())
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}
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get helmetJsx () {
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return (<Helmet
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htmlAttributes={{lang: 'en'}}
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title='Hello next.js!'
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meta={[
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{ name: 'viewport', content: 'width=device-width, initial-scale=1' }
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]}
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/>)
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}
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render () {
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return (<html {...this.helmetHtmlAttrComponents}>
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<Head>
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{ this.helmetJsx }
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{ this.helmetHeadComponents }
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</Head>
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<body>
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<Main />
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<NextScript />
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</body>
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</html>)
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}
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}
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