docusaurus/lib/core/Head.js
Fabrizio Ruggeri 976ae770b5 Allow Google Analytics to use gtag.js (#601)
* Moved google analytics script to head

The code now uses the new gtag script to track the website on google analytics.
The migration is explained [here](https://developers.google.com/analytics/devguides/collection/gtagjs/migration).
This will help to solve issues such as #375.
As indicated at https://support.google.com/analytics/answer/1008080
the analytics code must be placed in the head tag, so it is moved there.

* Add a boolean to use the new gtag library

* Update api-site-config.md
2018-04-29 10:44:11 -07:00

165 lines
5.2 KiB
JavaScript

/**
* Copyright (c) 2017-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
const React = require('react');
// html head for each page
class Head extends React.Component {
render() {
const links = this.props.config.headerLinks;
let hasBlog = false;
links.map(link => {
if (link.blog) hasBlog = true;
});
let highlight = {
version: '9.12.0',
theme: 'default',
...this.props.config.highlight,
};
// Use user-provided themeUrl if it exists, else construct one from version and theme.
let highlightThemeURL = highlight.themeUrl
? highlight.themeUrl
: `//cdnjs.cloudflare.com/ajax/libs/highlight.js/${
highlight.version
}/styles/${highlight.theme}.min.css`;
return (
<head>
<meta charSet="utf-8" />
<meta httpEquiv="X-UA-Compatible" content="IE=edge" />
<title>{this.props.title}</title>
<meta name="viewport" content="width=device-width" />
<meta name="generator" content="Docusaurus" />
<meta property="og:title" content={this.props.title} />
<meta property="og:type" content="website" />
<meta property="og:url" content={this.props.url} />
<meta property="og:description" content={this.props.description} />
{this.props.config.ogImage && (
<meta
property="og:image"
content={
this.props.config.url +
this.props.config.baseUrl +
this.props.config.ogImage
}
/>
)}
<meta name="twitter:card" content="summary" />
{this.props.config.twitterImage && (
<meta
name="twitter:image"
content={
this.props.config.url +
this.props.config.baseUrl +
this.props.config.twitterImage
}
/>
)}
{this.props.config.noIndex && <meta name="robots" content="noindex" />}
{this.props.redirect && (
<meta
http-equiv="refresh"
content={'0; URL=' + this.props.redirect}
/>
)}
<link
rel="shortcut icon"
href={this.props.config.baseUrl + this.props.config.favicon}
/>
{this.props.config.algolia && (
<link
rel="stylesheet"
href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"
/>
)}
<link rel="stylesheet" href={highlightThemeURL} />
{hasBlog && (
<link
rel="alternate"
type="application/atom+xml"
href={this.props.config.url + '/blog/atom.xml'}
title={this.props.config.title + ' Blog ATOM Feed'}
/>
)}
{hasBlog && (
<link
rel="alternate"
type="application/rss+xml"
href={this.props.config.url + '/blog/feed.xml'}
title={this.props.config.title + ' Blog RSS Feed'}
/>
)}
{this.props.config.gaTrackingId &&
this.props.config.gaGtag && (
<script
async
src={`https://www.googletagmanager.com/gtag/js?id=${
this.props.config.gaTrackingId
}`}
/>
)}
{this.props.config.gaTrackingId &&
this.props.config.gaGtag && (
<script
dangerouslySetInnerHTML={{
__html: `
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', '${this.props.config.gaTrackingId}');
`,
}}
/>
)}
{this.props.config.gaTrackingId &&
!this.props.config.gaGtag && (
<script
dangerouslySetInnerHTML={{
__html: `
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
ga('create', '${this.props.config.gaTrackingId}', 'auto');
ga('send', 'pageview');
`,
}}
/>
)}
{/* External resources */}
{this.props.config.stylesheets &&
this.props.config.stylesheets.map(function(source, idx) {
return (
<link rel="stylesheet" key={'stylesheet' + idx} href={source} />
);
})}
{this.props.config.scripts &&
this.props.config.scripts.map(function(source, idx) {
return (
<script
type="text/javascript"
key={'script' + idx}
src={source}
/>
);
})}
{/* Site defined code. Keep these at the end to avoid overriding. */}
<link
rel="stylesheet"
href={this.props.config.baseUrl + 'css/main.css'}
/>
</head>
);
}
}
module.exports = Head;