mirror of
https://github.com/smarty-php/smarty.git
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157 lines
3.9 KiB
XML
157 lines
3.9 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision$ -->
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<sect1 id="language.function.assign">
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<title>{assign}</title>
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<para>
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{assign} is used for assigning template variables
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<emphasis role="bold">during the execution
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of a template</emphasis>.
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</para>
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<informaltable frame="all">
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<tgroup cols="5">
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<colspec colname="param" align="center" />
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<colspec colname="type" align="center" />
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<colspec colname="required" align="center" />
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<colspec colname="default" align="center" />
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<colspec colname="desc" />
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<thead>
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<row>
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<entry>Attribute Name</entry>
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<entry>Type</entry>
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<entry>Required</entry>
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<entry>Default</entry>
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<entry>Description</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>var</entry>
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<entry>string</entry>
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<entry>Yes</entry>
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<entry><emphasis>n/a</emphasis></entry>
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<entry>The name of the variable being assigned</entry>
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</row>
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<row>
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<entry>value</entry>
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<entry>string</entry>
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<entry>Yes</entry>
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<entry><emphasis>n/a</emphasis></entry>
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<entry>The value being assigned</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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<example>
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<title>{assign}</title>
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<programlisting>
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<![CDATA[
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{assign var="name" value="Bob"}
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The value of $name is {$name}.
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]]>
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</programlisting>
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<para>
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The above example will output:
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</para>
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<screen>
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<![CDATA[
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The value of $name is Bob.
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]]>
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</screen>
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</example>
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<example>
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<title>{assign} with some maths</title>
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<para>This complex example must have the variables in backticks</para>
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<programlisting>
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<![CDATA[
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{assign var=running_total value=`$running_total+$some_array[loop].some_value`}
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]]>
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</programlisting>
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</example>
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<example>
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<title>Accessing {assign} variables from a PHP script.</title>
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<para>
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To access {assign} variables from the php script use
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<link linkend="api.get.template.vars">get_template_vars()</link>.
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However, the variables are only available after/during template execution
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as in the following example
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</para>
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<programlisting>
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<![CDATA[
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{* index.tpl *}
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{assign var="foo" value="Smarty"}
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]]>
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</programlisting>
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<programlisting role="php">
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<![CDATA[
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<?php
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// this will output nothing as the template has not been executed
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echo $smarty->get_template_vars('foo');
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// fetch the template to a dead variable
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$dead = $smarty->fetch('index.tpl');
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// this will output 'smarty' as the template has been executed
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echo $smarty->get_template_vars('foo');
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$smarty->assign('foo','Even smarter');
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// this will output 'Even smarter'
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echo $smarty->get_template_vars('foo');
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?>
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]]>
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</programlisting>
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</example>
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<para>
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The following functions can also <emphasis>optionally</emphasis> assign
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template variables.
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</para>
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<para>
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<link linkend="language.function.capture">{capture}</link>,
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<link linkend="language.function.include">{include}</link>,
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<link linkend="language.function.include.php">{include_php}</link>,
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<link linkend="language.function.insert">{insert}</link>,
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<link linkend="language.function.counter">{counter}</link>,
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<link linkend="language.function.cycle">{cycle}</link>,
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<link linkend="language.function.eval">{eval}</link>,
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<link linkend="language.function.fetch">{fetch}</link>,
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<link linkend="language.function.math">{math}</link>,
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<link linkend="language.function.textformat">{textformat}</link>
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</para>
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<para>
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See also <link linkend="api.assign">assign()</link>
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and
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<link linkend="api.get.template.vars">get_template_vars()</link>.
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</para>
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</sect1>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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--> |