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<?xml version="1.0" encoding="utf-8"?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Basic Usage | Jinja Documentation</title>
<style text="text/css">
body {
font-family: 'Arial', sans-serif;
margin: 1em;
padding: 0;
}
#navigation {
float: right;
margin: -1em -1em 1em 1em;
padding: 1em 2em 0 2em;
border: 1px solid #bbb;
border-width: 0 0 1px 1px;
background-color: #f8f8f8;
}
#page {
width: 45em;
}
a {
color: #d00;
}
a:hover {
color: #d40;
}
h1 {
font-size: 2em;
color: #d00;
margin: 0.5em 0 0.5em 0;
padding: 0;
}
h2 {
font-size: 1.7em;
color: #bd2121;
margin: 1em 0 0.5em 0;
}
h3 {
font-size: 1.3em;
color: #8a2424;
margin: 0.5em 0 0 0;
}
p {
margin: 0.5em 1em 0.5em 1em;
}
pre {
margin: 1em 0 1em 2em;
padding: 0.5em;
border-top: 1px solid #ddd;
border-bottom: 1px solid #ddd;
background-color: #f2f2f2;
overflow: auto;
}
li {
line-height: 1.4em;
}
hr {
margin: 1em;
padding: 0;
height: 1px!important;
background-color: #ccc;
border: none!important;
}
div.admonition {
margin: 1em 0 1em 1.5em;
padding: 0.5em 0.5em 0.5em 2em;
background-color: #f6e3e3;
border: 1px solid #d50000;
border-left: none;
border-right: none;
}
div.admonition p.admonition-title {
font-size: 1.1em;
color: #d40;
font-weight: bold;
margin: 0 0 0.5em -1em;
}
table {
border-collapse: collapse;
margin: 1em 2em 1em 1.5em;
}
table td, table th {
text-align: left;
border: 1px solid #eee;
padding: 0.3em;
}
table th {
background-color: #d00000;
color: white;
border: 1px solid #d00000;
border-bottom: 1px solid #eee;
}
</style>
</head>
<body>
<div id="navigation">
<h3>Documentation</h3>
<ul>
<li><a href="index.html">back to index</a></li>
<li><a href="http://wsgiarea.pocoo.org/repos/jinja/trunk/docs/source/basics.txt">view source online</a></li>
</ul>
<h3>Table of Contents</h3>
<ul>
<li><a href="#how-does-it-look-like">How does it look like?</a></li>
<li><a href="#context">Context</a></li>
<li><a href="#applying-filters">Applying Filters</a></li>
</ul>
</div>
<h1>Basic Usage</h1>
<div id="page">
<p>The Jinja template language is designed to strike a balance between content
and application logic.</p>
<div class="section">
<h2><a id="how-does-it-look-like" name="how-does-it-look-like">How does it look like?</a></h2>
<p>Here is a small example template:</p>
<pre class="literal-block">
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>My Webpage</title>
</head
<body>
<ul id="navigation">
{% for item in navigation %}
<li><a href="{{ item.href }}">{{ item.caption|escapexml }}</a></li>
{% endfor %}
</ul>
<h1>My Webpage</h1>
{{ variable }}
</body>
</html>
</pre>
</div>
<div class="section">
<h2><a id="context" name="context">Context</a></h2>
<p>The application developer provides a list of variables called context. Normally
there should be a documentation but if you want to know the content of the current
context you can add this to your template:</p>
<pre class="literal-block">
<pre>{% debug %}</pre>
</pre>
<p>You can print a context variable using <tt class="docutils literal"><span class="pre">{%</span> <span class="pre">print</span> <span class="pre">var</span> <span class="pre">%}</span></tt> or the shortcut
form: <tt class="docutils literal"><span class="pre">{{</span> <span class="pre">var</span> <span class="pre">}}</span></tt>.</p>
<p>A context isn't flat which means that each variable can has subvariables, as long
as it is representable as python data structure.</p>
<p>You can access attributes, dictionary values... using a dot ".":</p>
<pre class="literal-block">
{{ userlist.0.username }}
--> context['userlist'][0]['username']
{{ object.attribute }}
--> context['object']['attribute']
{{ item.caption }}
--> context['item']['caption']
</pre>
</div>
<div class="section">
<h2><a id="applying-filters" name="applying-filters">Applying Filters</a></h2>
<p>Jinja provides a simple but powerful filter system, which works like piping on
UNIX systems. Here a small example:</p>
<pre class="literal-block">
{{ variable|replace "search", "replace"|escapexml }}
</pre>
<p>You can put Whitespaces between filters if you like:</p>
<pre class="literal-block">
{{ variable | repalce "search", "replace" | escapexml }}
</pre>
<p>This will look for a variable <tt class="docutils literal"><span class="pre">variable</span></tt>, passes it to the filter <tt class="docutils literal"><span class="pre">replace</span></tt>
with the arguments "search" and "replace", and passes the result to the filter
<tt class="docutils literal"><span class="pre">escapexml</span></tt>.</p>
<p>For a list of available filters have a look at the <a class="reference" href="./filters.html">filter list</a>.</p>
</div>
</div>
</body>
</html>
|
