gistfile1.html

<xh:html xmlns:xh="http://www.w3.org/1999/xhtml"
      xmlns:xf="http://www.w3.org/2002/xforms"
      xmlns:xxf="http://orbeon.org/oxf/xml/xforms"
      xmlns:ev="http://www.w3.org/2001/xml-events"
      xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xh:head>
        <xh:title>XForms Submission with Action URL</xh:title>
        <xf:model>
            <xf:instance>
                <response/>
            </xf:instance>
            <xf:insert ev:event="xforms-model-construct-done" nodeset="instance()" origin="xxf:get-request-attribute('response-instance')" />
            <xf:submission id="submit" method="post" ref="instance()" resource="{action}"/>
        </xf:model>
    </xh:head>
    <xh:body>
        <xf:submit submission="submit">
            <xf:label>Submit!</xf:label>
        </xf:submit>
    </xh:body>
</xh:html>