This example demonstartes how we can control the error from the server.In this case we
point to not existing file on the server.
Response:
HTML
<![CDATA[
...
<b>Response:</b> <span id="rsperror" style="color:red"></span>
<br/>
<br/>
<table id="loaderr" class="scroll"></table>
<div id="ploaderr" class="scroll" style="text-align:center;"></div>
<script src="loaderror.js" type="text/javascript"> </script>
]]>
Java Scrpt code
<![CDATA[
...
jQuery("#loaderr").jqGrid({
url:'server_bad.php?q=1',
datatype: "xml",
colNames:['Inv No','Date', 'Client', 'Amount','Tax','Total','Notes'],
colModel:[
{name:'id',index:'id', width:55},
{name:'invdate',index:'invdate', width:90},
{name:'name',index:'name', width:100},
{name:'amount',index:'amount', width:80, align:"right"},
{name:'tax',index:'tax', width:80, align:"right"},
{name:'total',index:'total', width:80,align:"right"},
{name:'note',index:'note', width:150, sortable:false}
],
rowNum:10,
rowList:[10,20,30],
imgpath: gridimgpath,
pager: jQuery('#ploaderr'),
sortname: 'id',
viewrecords: true,
sortorder: "desc",
caption:"New Methods",
loadError : function(xhr,st,err) {
jQuery("#rsperror").html("Type: "+st+"; Response: "+ xhr.status + " "+xhr.statusText);
}
}).navGrid('#pmethod',{edit:false,add:false,del:false});
]]>
PHP with MySQL
<![CDATA[
...
$page = $_GET['page']; // get the requested page
$limit = $_GET['rows']; // get how many rows we want to have into the grid
$sidx = $_GET['sidx']; // get index row - i.e. user click to sort
$sord = $_GET['sord']; // get the direction
if(!$sidx) $sidx =1;
// connect to the database
$db = mysql_connect($dbhost, $dbuser, $dbpassword)
or die("Connection Error: " . mysql_error());
mysql_select_db($database) or die("Error conecting to db.");
$result = mysql_query("SELECT COUNT(*) AS count FROM invheader a, clients b WHERE a.client_id=b.client_id");
$row = mysql_fetch_array($result,MYSQL_ASSOC);
$count = $row['count'];
if( $count >0 ) {
$total_pages = ceil($count/$limit);
} else {
$total_pages = 0;
}
if ($page > $total_pages) $page=$total_pages;
$start = $limit*$page - $limit; // do not put $limit*($page - 1)
$SQL = "SELECT a.id, a.invdate, b.name, a.amount,a.tax,a.total,a.note FROM invheader a, clients b WHERE a.client_id=b.client_id ORDER BY $sidx $sord LIMIT $start , $limit";
$result = mysql_query( $SQL ) or die("Couldnt execute query.".mysql_error());
if ( stristr($_SERVER["HTTP_ACCEPT"],"application/xhtml+xml") ) {
header("Content-type: application/xhtml+xml;charset=utf-8"); } else {
header("Content-type: text/xml;charset=utf-8");
}
$et = ">";
echo "<?xml version='1.0' encoding='utf-8'?$et\n";
echo "<rows>";
echo "<page>".$page."</page>";
echo "<total>".$total_pages."</total>";
echo "<records>".$count."</records>";
// be sure to put text data in CDATA
while($row = mysql_fetch_array($result,MYSQL_ASSOC)) {
echo "<row id='". $row[id]."'>";
echo "<cell>". $row[id]."</cell>";
echo "<cell>". $row[invdate]."</cell>";
echo "<cell><![CDATA[". $row[name]."]]]]><![CDATA[></cell>";
echo "<cell>". $row[amount]."</cell>";
echo "<cell>". $row[tax]."</cell>";
echo "<cell>". $row[total]."</cell>";
echo "<cell><![CDATA[". $row[note]."]]]]><![CDATA[></cell>";
echo "</row>";
}
echo "</rows>";
...
]]>