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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 328315 $ -->
<refentry xml:id="yaf-dispatcher.catchexception" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>Yaf_Dispatcher::catchException</refname>
<refpurpose>Switch on/off exception catching</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <type>Yaf_Dispatcher</type><methodname>Yaf_Dispatcher::catchException</methodname>
<methodparam choice="opt"><type>bool</type><parameter>flag</parameter></methodparam>
</methodsynopsis>
<para>
While the application.dispatcher.throwException is On(you can also calling
to <methodname>Yaf_Dispatcher::throwException(TRUE)</methodname> to enable it), Yaf will throw Exception whe
error occurrs instead of trigger error.
</para>
<para>
then if you enable <methodname>Yaf_Dispatcher::catchException</methodname>(also can enabled by set
<link linkend="configuration.yaf.dispatcher.catchexception">application.dispatcher.catchException</link>),
all uncaught Exceptions will be caught by ErrorController::error if you have defined one.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>flag</parameter></term>
<listitem>
<para>
bool
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title><function>Yaf_Dispatcher::catchException</function>example</title>
<programlisting role="php">
<![CDATA[
/* if you defined a ErrorController like following */
<?php
class ErrorController extends Yaf_Controller_Abstract {
/**
* you can also call to Yaf_Request_Abstract::getException to get the
* un-caught exception.
*/
public function errorAction($exception) {
/* error occurs */
switch ($exception->getCode()) {
case YAF_ERR_NOTFOUND_MODULE:
case YAF_ERR_NOTFOUND_CONTROLLER:
case YAF_ERR_NOTFOUND_ACTION:
case YAF_ERR_NOTFOUND_VIEW:
echo 404, ":", $exception->getMessage();
break;
default :
$message = $exception->getMessage();
echo 0, ":", $exception->getMessage();
break;
}
}
}
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
/* now if some error occur, assuming access a non-exists controller(or you can throw a exception yourself): */
404:Could not find controller script **/application/controllers/No-exists-controller.php
]]>
</screen>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><methodname>Yaf_Dispatcher::throwException</methodname></member>
<member><methodname>Yaf_Dispatcher::setErrorHandler</methodname></member>
</simplelist>
</refsect1>
</refentry>
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