JqGrid: Sorting does not follow the right order - sorting

Question

The column I am trying to sort looks like this;
When you look at the image above you see that sort does not follow the right order. Jan 24
should come before Jan 28.
Here's my client-side code :
$(function () {
$("#list").jqGrid({
url:"grid_accessLog.php",
datatype: "json",
mtype: "GET",
colNames:["ID","Ip Address","User Info","Time","Page","Referrer","Search","User Agent","Notes"],
colModel: [
{ name: "id",index:"id", width: 55,search:true},
{ name: "ip_address",index:"ip_address",search:true, width: 90 },
{ name: "user_info",index:"user_info",search:true, width: 100},
{ name: "time",index:"time",search:true,sorttype:"date",width: 90},
{ name: "page",index:"page",search:true, width: 120},
{ name: "referrer",index:"referrer",search:true, width: 90 },
{ name: "search",index:"search",search:true, width: 90 },
{ name: "user_agent",index:"user_agent",search:true, width: 120 },
{ name: "notes",index:"notes",search:true, width: 120 }
],
pager: "#pager",
rowNum: 30,
rowList: [10,20,30],
autowidth:true,
sortname: "id",
sortorder: "desc",
// loadonce: true,
viewrecords: true,
autoencode: true,
caption: "Access Log",
height: 'auto'
}).navGrid("#pager", {search:true, edit:false,add:false,del:false,searchtext:"Search",refreshtext:"Refresh"});
});//end ready
Here's my server-side code;
//Get the requested page
$page = $_GET['page'];
//Get how many rows we want to have into the grid
$limit = $_GET['rows'];
// get index row - i.e. user click to sort. At first time sortname parameter -
// after that the index from colModel
$sidx = $_GET['sidx'];
// sorting order - at first time sortorder
$sord = $_GET['sord'];
// if we not pass at first time index use the first column for the index or what you want
if(!$sidx) $sidx =1;
//array to translate the search type
$ops = array(
'eq'=>'=', //equal
'ne'=>'<>',//not equal
'lt'=>'<', //less than
'le'=>'<=',//less than or equal
'gt'=>'>', //greater than
'ge'=>'>=',//greater than or equal
'bw'=>'LIKE', //begins with
'bn'=>'NOT LIKE', //doesn't begin with
'in'=>'LIKE', //is in
'ni'=>'NOT LIKE', //is not in
'ew'=>'LIKE', //ends with
'en'=>'NOT LIKE', //doesn't end with
'cn'=>'LIKE', // contains
'nc'=>'NOT LIKE' //doesn't contain
);
function getWhereClause($col, $oper, $val){
global $ops;
if($oper == 'bw' || $oper == 'bn') $val .= '%';
if($oper == 'ew' || $oper == 'en' ) $val = '%'.$val;
if($oper == 'cn' || $oper == 'nc' || $oper == 'in' || $oper == 'ni') $val = '%'.$val.'%';
return " WHERE $col {$ops[$oper]} '$val' ";
}
$where = ""; //if there is no search request sent by jqgrid, $where should be empty
$searchField = isset($_GET['searchField']) ? $_GET['searchField'] : false;
$searchOper = isset($_GET['searchOper']) ? $_GET['searchOper']: false;
$searchString = isset($_GET['searchString']) ? $_GET['searchString'] : false;
if ($_GET['_search'] == 'true') {
$where = getWhereClause($searchField,$searchOper,$searchString);
}
mysql_query("SET NAMES 'utf8'");
// calculate the number of rows for the query. We need this for paging the result
$result = mysql_query("SELECT COUNT(*) AS count FROM renal_accessLog");
$row = mysql_fetch_array($result,MYSQL_ASSOC);
$count = $row['count'];
// calculate the total pages for the query
if( $count > 0 && $limit > 0) {
$total_pages = ceil($count/$limit);
} else {
$total_pages = 0;
}
// if for some reasons the requested page is greater than the total
// set the requested page to total page
if ($page > $total_pages) $page=$total_pages;
// calculate the starting position of the rows
$start = $limit*$page - $limit;
// if for some reasons start position is negative set it to 0
// typical case is that the user type 0 for the requested page
if($start <0) $start = 0;
// the actual query for the grid data
$SQL = "SELECT * FROM renal_accessLog ".$where." ORDER BY $sidx $sord LIMIT $start , $limit";
$result = mysql_query( $SQL ) or die("Couldn't execute query.".mysql_error());
$responce = new stdClass();
$responce->page = $page;
$responce->total = $total_pages;
$responce->records = $count;
$i=0;
while($row = mysql_fetch_array($result,MYSQL_ASSOC))
{
$responce->rows[$i]['id']=$row['id'];
$responce->rows[$i]['cell']=array($row['id'],$row['ip_address'],$row['user_info'],$row['time'],$row['page'],$row['referrer'],$row['search'],$row['user_agent'],$row['notes'] );
$i++;
}
echo json_encode($responce);
I have the same problem on sorting an address column on another grid. I hope that if I can get this one fixed, I can apply the same logic to the other grid. Thanks for you input!

Answer 1

Ok so what I did was since time does not sort in the right order, and time and id are corollaries, I added this piece of checking to my query.
//checking if time is the sort column clicked so that we can default sidx to id..
if($sidx =='time'){
$SQL = "SELECT * FROM renal_accessLog ".$where." ORDER BY id $sord LIMIT $start, $limit";
}else{
$SQL = "SELECT * FROM renal_accessLog ".$where." ORDER BY $sidx $sord LIMIT $start , $limit";
}
$result = mysql_query( $SQL ) or die("Couldn't execute query.".mysql_error());