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smarty/docs/en/designers/language-basic-syntax/language-escaping.xml
2005-06-16 17:14:40 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision$ -->
<sect1 id="language.escaping">
<title>Escaping Smarty Parsing</title>
<para>
It is sometimes desirable or even necessary to have Smarty ignore sections it
would otherwise parse. A classic example is embedding Javascript or CSS code in
a template. The problem arises as those languages use the { and } characters
which are also the default
<link linkend="language.function.ldelim">delimiters</link> for Smarty.
</para>
<para>
The simplest thing is to avoid the situation altogether by separating your Javascript
and CSS code into their own files and then using standard HTML methods to access them.
</para>
<para>
Including literal content is possible using <link
linkend="language.function.literal">{literal} .. {/literal}</link> blocks.
Similar to HTML entity usage, you can use <link
linkend="language.function.ldelim">{ldelim}</link>,<link
linkend="language.function.ldelim">{rdelim}</link> or <link
linkend="language.variables.smarty.ldelim">{$smarty.ldelim}</link>
to display the current delimiters.
</para>
<para>
It is often convenient to simply change Smarty's <link
linkend="variable.left.delimiter">$left_delimiter</link> and
<link linkend="variable.right.delimiter">$right_delimiter</link>.
</para>
<example>
<title>changing delimiters example</title>
<programlisting role="php">
<![CDATA[
<?php
$smarty = new Smarty;
$smarty->left_delimiter = '<!--{';
$smarty->right_delimiter = '}-->';
$smarty->assign('foo', 'bar');
$smarty->display('example.tpl');
?>
]]>
</programlisting>
<para>
Where example.tpl is:
</para>
<programlisting>
<![CDATA[
<script language="javascript">
var foo = <!--{$foo}-->;
function dosomething() {
alert("foo is " + foo);
}
dosomething();
</script>
]]>
</programlisting>
</example>
<para>
See also <link linkend="language.modifier.escape">escape modifier</link>
</para>
</sect1>
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