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<?xml version="1.0" encoding="UTF-8"?>
<!-- Reviewed: no -->
<sect1 id="zend.feed.modifying-feed">
<title>Modifying Feed and Entry structures</title>
<para>
<classname>Zend_Feed</classname>'s natural syntax extends to constructing and modifying
feeds and entries as well as reading them. You can easily turn your new or modified objects
back into well-formed <acronym>XML</acronym> for saving to a file or sending to a server.
</para>
<example id="zend.feed.modifying-feed.example.modifying">
<title>Modifying an Existing Feed Entry</title>
<programlisting language="php"><![CDATA[
$feed = new Zend_Feed_Atom('http://atom.example.com/feed/1');
$entry = $feed->current();
$entry->title = 'This is a new title';
$entry->author->email = 'my_email@example.com';
echo $entry->saveXML();
]]></programlisting>
<para>
This will output a full (includes <command><?xml ... ></command> prologue)
<acronym>XML</acronym> representation of the new entry, including any necessary
<acronym>XML</acronym> namespaces.
</para>
<para>
Note that the above will work even if the existing entry does not already have an author
tag. You can use as many levels of <command>-></command> access as you like before
getting to an assignment; all of the intervening levels will be created for you
automatically if necessary.
</para>
</example>
<para>
If you want to use a namespace other than <command>atom:</command>, <command>rss:</command>,
or <command>osrss:</command> in your entry, you need to register the namespace with
<classname>Zend_Feed</classname> using
<methodname>Zend_Feed::registerNamespace()</methodname>. When you are modifying an existing
element, it will always maintain its original namespace. When adding a new element, it will
go into the default namespace if you do not explicitly specify another namespace.
</para>
<example id="zend.feed.modifying-feed.example.creating">
<title>Creating an Atom Entry with Elements of Custom Namespaces</title>
<programlisting language="php"><![CDATA[
$entry = new Zend_Feed_Entry_Atom();
// id is always assigned by the server in Atom
$entry->title = 'my custom entry';
$entry->author->name = 'Example Author';
$entry->author->email = 'me@example.com';
// Now do the custom part.
Zend_Feed::registerNamespace('myns', 'http://www.example.com/myns/1.0');
$entry->{'myns:myelement_one'} = 'my first custom value';
$entry->{'myns:container_elt'}->part1 = 'first nested custom part';
$entry->{'myns:container_elt'}->part2 = 'second nested custom part';
echo $entry->saveXML();
]]></programlisting>
</example>
</sect1>
<!--
vim:se ts=4 sw=4 et:
-->
|
