React Helmet Not Updating Meta Tags
I have my index.html page in react project as following: Bucard | Digital</div><h2 id="solution_1">Solution 1:
</h2><div class="answer-desc"><p>For an SPA without SSR (server side rendering), from a bot's point of view, your head tags are in your static index.html file in your dist/public folder. To add the ability to serve dynamic elements from head tag to bots you can:</p><ul><li>Use a pre-render service</li><li>Alternatively use next.js to render your pages (or parts of the page) on the server so bots can crawl this</li><li>Look into other solutions for SSR</li></ul><p>You may read - <a rel="nofollow noreferrer noopener" href="https://github.com/nfl/react-helmet/issues/489">https://github.com/nfl/react-helmet/issues/489</a></p><p>An approach that worked for me:</p><a name='more'></a><ol><li><p>Direct your traffic to a node server</p></li><li><p>From this node server return your index.html file and also pass head tags.</p><pre><code id="code_0" class="hljs language-kotlin"><span class="hljs-keyword">return</span> res.render(<span class="hljs-string">'index'</span>, {
headTags: ReactDOMServer.renderToStaticMarkup(tags),
})
</code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_0')">Copy</button></pre></li></ol><p>Here, <strong>tags</strong> is an array of HTML elements like <code><meta/>, <title/></code> etc.</p><p>Bonus: You can import the same <strong>tags</strong> module on frontend to get the head tags for <strong>Helmet</strong>.</p><ol start="3"><li><p>In your index.html you can use handlebars to read the head tags that are passed from node server and print the head tags in head section.</p><pre><code id="code_2" class="hljs language-bash"><<span class="hljs-built_in">head</span>>
{{{
headTags
}}}
...
</head>
</code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_2')">Copy</button></pre></li></ol><p>and to use handlebar as an engine, add this to your node sever</p><p><code>app.engine('html', handlebars.engine);</code></p></div><h2 id="solution_2">Solution 2:
</h2><div class="answer-desc"><p>I faced the same issue. And solved it as below.</p><p>In your server file (say server/index.js), add
const helmet = Helmet.renderStatic() after ReactDOMServer.renderToString. My code looks like:</p><pre><code id="code_4" class="hljs language-javascript"><span class="hljs-keyword">const</span> app = <span class="hljs-title class_">React</span>DOMServer.<span class="hljs-title function_">renderToString</span>(<span class="language-xml"><span class="hljs-tag"><<span class="hljs-name">App</span> /></span></span>);
<span class="hljs-keyword">const</span> helmet = <span class="hljs-title class_">Helmet</span>.<span class="hljs-title function_">renderStatic</span>()
<span class="hljs-keyword">const</span> indexFile = path.<span class="hljs-title function_">resolve</span>(<span class="hljs-string">'./build/index.html'</span>);
fs.<span class="hljs-title function_">readFile</span>(indexFile, <span class="hljs-string">'utf8'</span>, <span class="hljs-function">(<span class="hljs-params">err, data</span>) =></span> {
<span class="hljs-keyword">let</span> updated = data.<span class="hljs-title function_">replace</span>(<span class="hljs-string">'<div id="root"></div>'</span>, <span class="hljs-string">`<div id="root"><span class="hljs-subst">${app}</span></div>`</span>);
<span class="hljs-keyword">return</span> res.<span class="hljs-title function_">send</span>(<span class="hljs-title function_">updateHtmlContent</span>(updated, helmet));
}
</code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_4')">Copy</button></pre><p>and add the following function. This is to update html content with helmet tags.</p><pre><code id="code_5" class="hljs language-xml">function updateHtmlContent(app, helmet) {
return `
<span class="hljs-meta"><!DOCTYPE <span class="hljs-keyword">html</span>></span><span class="hljs-tag"><<span class="hljs-name">html</span><span class="hljs-attr">lang</span>=<span class="hljs-string">"en"</span>></span><span class="hljs-tag"><<span class="hljs-name">head</span>></span>
${helmet.title.toString()}
${helmet.meta.toString()}
<span class="hljs-tag"></<span class="hljs-name">head</span>></span><span class="hljs-tag"><<span class="hljs-name">body</span>></span><span class="hljs-tag"><<span class="hljs-name">div</span><span class="hljs-attr">id</span>=<span class="hljs-string">"root"</span>></span>
${app}
<span class="hljs-tag"></<span class="hljs-name">div</span>></span><span class="hljs-tag"></<span class="hljs-name">body</span>></span><span class="hljs-tag"></<span class="hljs-name">html</span>></span>
`
}
</code><button class="copy-btn btn btn-secondary btn-sm" onclick="copyCode(this,'code_5')">Copy</button></pre><p>This may help you :)</p></div>
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