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  <pre class="prettyprint lang-js"><span id='Ext-data-writer-Xml'>/**
</span> * @author Ed Spencer
 * @class Ext.data.writer.Xml

This class is used to write {@link Ext.data.Model} data to the server in an XML format.
The {@link #documentRoot} property is used to specify the root element in the XML document.
The {@link #record} option is used to specify the element name for each record that will make
up the XML document.

 * @markdown
 */
Ext.define('Ext.data.writer.Xml', {
    
    /* Begin Definitions */
    
    extend: 'Ext.data.writer.Writer',
    alternateClassName: 'Ext.data.XmlWriter',
    
    alias: 'writer.xml',
    
    /* End Definitions */
    
<span id='Ext-data-writer-Xml-cfg-documentRoot'>    /**
</span>     * @cfg {String} documentRoot The name of the root element of the document. Defaults to &lt;tt&gt;'xmlData'&lt;/tt&gt;.
     * If there is more than 1 record and the root is not specified, the default document root will still be used
     * to ensure a valid XML document is created.
     */
    documentRoot: 'xmlData',
    
<span id='Ext-data-writer-Xml-cfg-defaultDocumentRoot'>    /**
</span>     * @cfg {String} defaultDocumentRoot The root to be used if {@link #documentRoot} is empty and a root is required
     * to form a valid XML document.
     */
    defaultDocumentRoot: 'xmlData',

<span id='Ext-data-writer-Xml-cfg-header'>    /**
</span>     * @cfg {String} header A header to use in the XML document (such as setting the encoding or version).
     * Defaults to &lt;tt&gt;''&lt;/tt&gt;.
     */
    header: '',

<span id='Ext-data-writer-Xml-cfg-record'>    /**
</span>     * @cfg {String} record The name of the node to use for each record. Defaults to &lt;tt&gt;'record'&lt;/tt&gt;.
     */
    record: 'record',

    //inherit docs
    writeRecords: function(request, data) {
        var me = this,
            xml = [],
            i = 0,
            len = data.length,
            root = me.documentRoot,
            record = me.record,
            needsRoot = data.length !== 1,
            item,
            key;
            
        // may not exist
        xml.push(me.header || '');
        
        if (!root &amp;&amp; needsRoot) {
            root = me.defaultDocumentRoot;
        }
        
        if (root) {
            xml.push('&lt;', root, '&gt;');
        }
            
        for (; i &lt; len; ++i) {
            item = data[i];
            xml.push('&lt;', record, '&gt;');
            for (key in item) {
                if (item.hasOwnProperty(key)) {
                    xml.push('&lt;', key, '&gt;', item[key], '&lt;/', key, '&gt;');
                }
            }
            xml.push('&lt;/', record, '&gt;');
        }
        
        if (root) {
            xml.push('&lt;/', root, '&gt;');
        }
            
        request.xmlData = xml.join('');
        return request;
    }
});
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