Files
liquidjs/tutorials/use-in-expressjs.html
T

195 lines
19 KiB
HTML
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
<!DOCTYPE html>
<html lang="en">
<head prefix="og: https://ogp.me/ns#">
<meta charset="utf-8">
<title>Use in Express.js | LiquidJS</title>
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="LiquidJS is a simple, expressive and safe Shopify / GitHub Pages compatible template engine in pure JavaScript.">
<link rel="dns-prefetch" href="https://cdn.jsdelivr.net/">
<link rel="manifest" href="/manifest.json">
<!-- Canonical links -->
<link rel="canonical" href="https://liquidjs.com/tutorials/use-in-expressjs.html">
<!-- Alternative links -->
<link rel="alternative" hreflang="en" href="https://liquidjs.com/tutorials/use-in-expressjs">
<link rel="alternative" hreflang="zh-cn" href="https://liquidjs.com/zh-cn/tutorials/use-in-expressjs">
<!-- Icon -->
<link rel="apple-touch-icon" sizes="57x57" href="../icon/apple-touch-icon-57x57.png">
<link rel="apple-touch-icon" sizes="114x114" href="../icon/apple-touch-icon-114x114.png">
<link rel="apple-touch-icon" sizes="72x72" href="../icon/apple-touch-icon-72x72.png">
<link rel="apple-touch-icon" sizes="144x144" href="../icon/apple-touch-icon-144x144.png">
<link rel="apple-touch-icon" sizes="60x60" href="../icon/apple-touch-icon-60x60.png">
<link rel="apple-touch-icon" sizes="120x120" href="../icon/apple-touch-icon-120x120.png">
<link rel="apple-touch-icon" sizes="76x76" href="../icon/apple-touch-icon-76x76.png">
<link rel="apple-touch-icon" sizes="152x152" href="../icon/apple-touch-icon-152x152.png">
<link rel="icon" type="image/png" href="../icon/favicon-196x196.png" sizes="196x196">
<link rel="icon" type="image/png" href="../icon/favicon-160x160.png" sizes="160x160">
<link rel="icon" type="image/png" href="../icon/favicon-96x96.png" sizes="96x96">
<link rel="icon" type="image/png" href="../icon/favicon-16x16.png" sizes="16x16">
<link rel="icon" type="image/png" href="../icon/favicon-32x32.png" sizes="32x32">
<meta name="msapplication-TileColor" content="#2f83cd">
<meta name="msapplication-TileImage" content="../icon/mstile-144x144.png">
<link rel="stylesheet" href="../css/navy.css">
<link rel="alternate" href="../atom.xml" title="LiquidJS" type="application/atom+xml">
<meta name="generator" content="Hexo 7.3.0"></head>
<body>
<div id="container">
<header id="header" class="wrapper">
<div id="header-inner" class="inner">
<h1 id="logo-wrap">
<a href="../index.html" id="logo">LiquidJS</a>
</h1>
<nav id="main-nav">
<a href="../tutorials/intro-to-liquid.html" class="main-nav-link">Tutorials</a><a href="../tags/overview.html" class="main-nav-link">Tags</a><a href="../filters/overview.html" class="main-nav-link">Filters</a><a href="../playground.html" class="main-nav-link">Playground</a><a href="../api/classes/Liquid.html" class="main-nav-link">API</a>
<div id="search-input-wrap">
<i id="search-input-icon" class="icon-search"></i>
<input type="search" id="search-input" placeholder="Search...">
</div>
</nav>
<div class="main-nav-link icon-nav-link">
<label><i class="icon-network"></i> <span class="icon-nav-title">English</span></label>
<select id="lang-select" data-canonical="tutorials/use-in-expressjs.html">
<option value="en" selected>English</option>
<option value="zh-cn">简体中文</option>
</select>
</div>
<a target="_blank" rel="noopener external nofollow noreferrer" href="https://github.com/harttle/liquidjs" class="main-nav-link icon-nav-link"><i class="icon-github"></i> <span class="icon-nav-title">GitHub</span></a>
<a id="mobile-nav-toggle">
<span class="mobile-nav-toggle-bar"></span>
<span class="mobile-nav-toggle-bar"></span>
<span class="mobile-nav-toggle-bar"></span>
</a>
</div>
</header>
<div id="content-wrap">
<div id="content" class="wrapper">
<div id="content-inner">
<aside id="sidebar" role="navigation">
<div class="inner">
<strong class="sidebar-title">Getting Started</strong><a href="intro-to-liquid.html" class="sidebar-link">Intro to Liquid</a><a href="setup.html" class="sidebar-link">Setup</a><a href="options.html" class="sidebar-link">Options</a><a href="render-file.html" class="sidebar-link">Render Files</a><a href="partials-and-layouts.html" class="sidebar-link">Includes and Layouts</a><a href="use-in-expressjs.html" class="sidebar-link current">Use in Express.js</a><strong class="sidebar-title">Advanced</strong><a href="caching.html" class="sidebar-link">Caching</a><a href="escaping.html" class="sidebar-link">Escaping</a><a href="register-filters-tags.html" class="sidebar-link">Register Filters/Tags</a><a href="access-scope-in-filters.html" class="sidebar-link">Access Scope in Filters</a><a href="parse-parameters.html" class="sidebar-link">Parse Parameters</a><a href="render-tag-content.html" class="sidebar-link">Render Tag Content</a><a href="drops.html" class="sidebar-link">Liquid Drops</a><a href="sync-and-async.html" class="sidebar-link">Sync and Async</a><a href="whitespace-control.html" class="sidebar-link">Whitespace Control</a><a href="plugins.html" class="sidebar-link">Plugins</a><a href="operators.html" class="sidebar-link">Operators</a><a href="truthy-and-falsy.html" class="sidebar-link">Truthy and Falsy</a><a href="dos.html" class="sidebar-link">DoS</a><strong class="sidebar-title">Miscellaneous</strong><a href="migrate-to-9.html" class="sidebar-link">Migrate to LiquidJS 9</a><a href="changelog.html" class="sidebar-link">Changelog</a><a href="differences.html" class="sidebar-link">Differences with Shopify/liquid</a><a href="contribution-guidelines.html" class="sidebar-link">Contribution Guidelines</a>
</div>
</aside>
<article class="article-container" itemscope itemtype="https://schema.org/Article">
<div class="article-inner">
<div class="article">
<div class="inner">
<header class="article-header">
<h1 class="article-title" itemprop="name">Use in Express.js</h1>
<a target="_blank" rel="noopener external nofollow noreferrer" href="https://github.com/harttle/liquidjs/edit/master/docs/source/tutorials/use-in-expressjs.md" class="article-edit-link" title="Improve this doc"><i class="icon-pencil"></i></a>
</header>
<div class="article-content" itemprop="articleBody">
<p>LiquidJS is compatible to the <a target="_blank" rel="noopener external nofollow noreferrer" href="https://expressjs.com/en/resources/template-engines.html">express template engines</a>. You can set liquidjs instance to the <a target="_blank" rel="noopener external nofollow noreferrer" href="https://expressjs.com/en/guide/using-template-engines.html">view engine</a> option:</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> &#123; <span class="title class_">Liquid</span> &#125; = <span class="built_in">require</span>(<span class="string">&#x27;liquidjs&#x27;</span>);</span><br><span class="line"><span class="keyword">var</span> engine = <span class="keyword">new</span> <span class="title class_">Liquid</span>();</span><br><span class="line"></span><br><span class="line"><span class="comment">// register liquid engine</span></span><br><span class="line">app.<span class="title function_">engine</span>(<span class="string">&#x27;liquid&#x27;</span>, engine.<span class="title function_">express</span>()); </span><br><span class="line">app.<span class="title function_">set</span>(<span class="string">&#x27;views&#x27;</span>, <span class="string">&#x27;./views&#x27;</span>); <span class="comment">// specify the views directory</span></span><br><span class="line">app.<span class="title function_">set</span>(<span class="string">&#x27;view engine&#x27;</span>, <span class="string">&#x27;liquid&#x27;</span>); <span class="comment">// set liquid to default</span></span><br></pre></td></tr></table></figure>
<blockquote class="note info"><strong class="note-title">Working Demo</strong><p>Heres a working demo for LiquidJS usage in Express.js: <a href="https://github.com/harttle/liquidjs/blob/master/demo/express/" rel="external nofollow noreferrer" target="_blank">liquidjs/demo/express/</a>.</p>
</blockquote>
<h2 id="Template-Lookup" class="article-heading"><a href="#Template-Lookup" class="headerlink" title="Template Lookup"></a>Template Lookup<a class="article-anchor" href="#Template-Lookup" aria-hidden="true"></a></h2><p>The <a href="/api/interfaces/LiquidOptions.html#root">root</a> option will continue to work as templates root, as you can see in <a href="./render-a-file.html">Render A Template File</a>. Additionally, the <a target="_blank" rel="noopener external nofollow noreferrer" href="https://expressjs.com/en/guide/using-template-engines.html"><code>views</code></a> option in express.js (as shown above) will also be respected. Say you have a template directory like:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">.</span><br><span class="line">├── views1/</span><br><span class="line">│ └── hello.liquid</span><br><span class="line">└── views2/</span><br><span class="line"> └── world.liquid</span><br></pre></td></tr></table></figure>
<p>And youre setting template root for liquidjs to <code>views1</code> and expressjs to <code>views2</code>:</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> &#123; <span class="title class_">Liquid</span> &#125; = <span class="built_in">require</span>(<span class="string">&#x27;liquidjs&#x27;</span>);</span><br><span class="line"><span class="keyword">var</span> engine = <span class="keyword">new</span> <span class="title class_">Liquid</span>(&#123;</span><br><span class="line"> <span class="attr">root</span>: <span class="string">&#x27;./views1/&#x27;</span></span><br><span class="line">&#125;);</span><br><span class="line"></span><br><span class="line">app.<span class="title function_">engine</span>(<span class="string">&#x27;liquid&#x27;</span>, engine.<span class="title function_">express</span>()); </span><br><span class="line">app.<span class="title function_">set</span>(<span class="string">&#x27;views&#x27;</span>, <span class="string">&#x27;./views2&#x27;</span>); <span class="comment">// specify the views directory</span></span><br><span class="line">app.<span class="title function_">set</span>(<span class="string">&#x27;view engine&#x27;</span>, <span class="string">&#x27;liquid&#x27;</span>); <span class="comment">// set liquid to default</span></span><br></pre></td></tr></table></figure>
<p>Both of <code>hello.liquid</code> and <code>world.liquid</code> can be resolved and rendered:</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">res.<span class="title function_">render</span>(<span class="string">&#x27;hello&#x27;</span>)</span><br><span class="line">res.<span class="title function_">render</span>(<span class="string">&#x27;world&#x27;</span>)</span><br></pre></td></tr></table></figure>
<h2 id="Caching" class="article-heading"><a href="#Caching" class="headerlink" title="Caching"></a>Caching<a class="article-anchor" href="#Caching" aria-hidden="true"></a></h2><p>Simply setting the <a href="/api/interfaces/LiquidOptions.html#cache">cache option</a> to true will enable template caching, as explained in <a href="./caching.html">Caching</a>. Its recommended to enable cache in production environment, which can be done by:</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> &#123; <span class="title class_">Liquid</span> &#125; = <span class="built_in">require</span>(<span class="string">&#x27;liquidjs&#x27;</span>);</span><br><span class="line"><span class="keyword">var</span> engine = <span class="keyword">new</span> <span class="title class_">Liquid</span>(&#123;</span><br><span class="line"> <span class="attr">cache</span>: process.<span class="property">env</span>.<span class="property">NODE_ENV</span> === <span class="string">&#x27;production&#x27;</span></span><br><span class="line">&#125;);</span><br></pre></td></tr></table></figure>
</div>
<footer class="article-footer">
<time class="article-footer-updated" datetime="2024-08-18T05:44:37.719Z" itemprop="dateModified">Last updated: 2024-08-18</time>
<a href="partials-and-layouts.html" class="article-footer-prev" title="Includes and Layouts"><i class="icon-chevron-left"></i><span>Prev</span></a><a href="caching.html" class="article-footer-next" title="Caching"><span>Next</span><i class="icon-chevron-right"></i></a>
</footer>
</div>
</div>
<aside id="article-toc" role="navigation">
<div id="article-toc-inner">
<div id="article-toc-inner-list">
<strong class="sidebar-title">Contents</strong>
<ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#Template-Lookup"><span class="toc-text">Template Lookup</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#Caching"><span class="toc-text">Caching</span></a></li></ol>
</div>
<a href="#" id="article-toc-top">Back to Top</a>
</div>
</aside>
</div>
</article>
</div>
</div>
</div>
<footer id="footer" class="wrapper">
<div class="inner">
<div id="footer-copyright">
&copy; 2024 <a href="https://github.com/harttle/liquidjs/graphs/contributors" rel="external nofollow noreferrer" target="_blank">Harttle</a><br>
Documentation licensed under <a href="https://creativecommons.org/licenses/by/4.0/" rel="external nofollow noreferrer" target="_blank">CC BY 4.0</a>.
</div>
<div id="footer-links">
<a href="https://twitter.com/harttleharttle" rel="external nofollow noreferrer" class="footer-link" target="_blank"><i class="icon-twitter"></i></a>
<a href="https://opencollective.com/liquidjs" rel="external nofollow noreferrer" class="footer-link" target="_blank"><i class="icon-opencollective"></i></a>
<a href="https://github.com/harttle/liquidjs" rel="external nofollow noreferrer" class="footer-link" target="_blank"><i class="icon-github"></i></a>
</div>
</div>
</footer>
</div>
<div id="mobile-nav-dimmer"></div>
<nav id="mobile-nav">
<div id="mobile-nav-inner">
<ul id="mobile-nav-list">
<a href="../tutorials/intro-to-liquid.html" class="mobile-nav-link">Tutorials</a><a href="../tags/overview.html" class="mobile-nav-link">Tags</a><a href="../filters/overview.html" class="mobile-nav-link">Filters</a><a href="../playground.html" class="mobile-nav-link">Playground</a><a href="../api/classes/Liquid.html" class="mobile-nav-link">API</a>
</ul>
<div class="mobile-sidebar-list">
<strong class="mobile-nav-title">Getting Started</strong><a href="intro-to-liquid.html" class="mobile-nav-link">Intro to Liquid</a><a href="setup.html" class="mobile-nav-link">Setup</a><a href="options.html" class="mobile-nav-link">Options</a><a href="render-file.html" class="mobile-nav-link">Render Files</a><a href="partials-and-layouts.html" class="mobile-nav-link">Includes and Layouts</a><a href="use-in-expressjs.html" class="mobile-nav-link current">Use in Express.js</a><strong class="mobile-nav-title">Advanced</strong><a href="caching.html" class="mobile-nav-link">Caching</a><a href="escaping.html" class="mobile-nav-link">Escaping</a><a href="register-filters-tags.html" class="mobile-nav-link">Register Filters/Tags</a><a href="access-scope-in-filters.html" class="mobile-nav-link">Access Scope in Filters</a><a href="parse-parameters.html" class="mobile-nav-link">Parse Parameters</a><a href="render-tag-content.html" class="mobile-nav-link">Render Tag Content</a><a href="drops.html" class="mobile-nav-link">Liquid Drops</a><a href="sync-and-async.html" class="mobile-nav-link">Sync and Async</a><a href="whitespace-control.html" class="mobile-nav-link">Whitespace Control</a><a href="plugins.html" class="mobile-nav-link">Plugins</a><a href="operators.html" class="mobile-nav-link">Operators</a><a href="truthy-and-falsy.html" class="mobile-nav-link">Truthy and Falsy</a><a href="dos.html" class="mobile-nav-link">DoS</a><strong class="mobile-nav-title">Miscellaneous</strong><a href="migrate-to-9.html" class="mobile-nav-link">Migrate to LiquidJS 9</a><a href="changelog.html" class="mobile-nav-link">Changelog</a><a href="differences.html" class="mobile-nav-link">Differences with Shopify/liquid</a><a href="contribution-guidelines.html" class="mobile-nav-link">Contribution Guidelines</a>
</div>
</div>
<div id="mobile-button-list">
<a href="https://github.com/harttle/liquidjs" class="mobile-nav-link" rel="external" target="_blank"><i class="icon-github"></i></a>
<a href="https://opencollective.com/liquidjs" class="mobile-nav-link" rel="external" target="_blank"><i class="icon-opencollective"></i></a>
<div id="mobile-lang-select-wrap" class="mobile-nav-link">
<label for="mobile-lang-select"><i class="icon-network"></i></label>
<select id="mobile-lang-select" data-canonical="tutorials/use-in-expressjs.html">
<option value="en" selected>English</option>
<option value="zh-cn">简体中文</option>
</select>
</div>
</div>
</nav>
<script src="../js/main.js"></script>
<script src="https://cdn.jsdelivr.net/npm/docsearch.js@2/dist/cdn/docsearch.min.js"></script>
<script>
document.getElementById('search-input-wrap').classList.add('on');
docsearch({
apiKey: '01f36cc168657a26a385308b9e721bc6',
indexName: 'liquidjs',
inputSelector: '#search-input',
debug: false
});
</script>
</body>
</html>