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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="solrquery.addgroupsortfield" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>SolrQuery::addGroupSortField</refname>
<refpurpose>Add a group sort field (group.sort parameter)</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <type>SolrQuery</type><methodname>SolrQuery::addGroupSortField</methodname>
<methodparam><type>string</type><parameter>field</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>order</parameter></methodparam>
</methodsynopsis>
<para>
Allow sorting group documents, using group sort field (group.sort parameter).
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>field</parameter></term>
<listitem>
<para>
Field name
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>order</parameter></term>
<listitem>
<para>
Order ASC/DESC, utilizes SolrQuery::ORDER_* constants
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title><function>SolrQuery::addGroupSortField</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$solrQuery = new SolrQuery('*:*');
$solrQuery
->setGroup(true)
->addGroupSortField('price', SolrQuery::ORDER_ASC);
echo $solrQuery;
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
q=*:*&group=true&group.sort=price asc
]]>
</screen>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><methodname>SolrQuery::setGroup</methodname></member>
<member><methodname>SolrQuery::addGroupField</methodname></member>
<member><methodname>SolrQuery::addGroupFunction</methodname></member>
<member><methodname>SolrQuery::addGroupQuery</methodname></member>
<member><methodname>SolrQuery::setGroupFacet</methodname></member>
<member><methodname>SolrQuery::setGroupOffset</methodname></member>
<member><methodname>SolrQuery::setGroupLimit</methodname></member>
<member><methodname>SolrQuery::setGroupMain</methodname></member>
<member><methodname>SolrQuery::setGroupNGroups</methodname></member>
<member><methodname>SolrQuery::setGroupTruncate</methodname></member>
<member><methodname>SolrQuery::setGroupFormat</methodname></member>
<member><methodname>SolrQuery::setGroupCachePercent</methodname></member>
</simplelist>
</refsect1>
</refentry>
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