我有一个不使用loadonce：true选项的jqGrid。服务器在发送每个查询时动态处理排序。唯一的事情是每个页面显示相同的数据。当我点击列标题时，数据会被正确排序，但我无法显示不同的页面。
这是处理排序的函数。它与http://www.trirand.com/jqgridwiki/doku.php?id=wiki:first_grid&s[]=sidx基本相同，除了使用postgres而不是mysql
function popGrid($conn){
$page = $_POST['page'];
$limit = $_POST['rows'];
$sidx = $_POST['sidx'];
$sord = $_POST['sord'];
$sqlCount = $_POST['sqlCount'];
$sqlSelect = $_POST['sqlSelect'];
$sqlSelect2 = $_POST['sqlSelect2'];
$sqlSelect3 = $_POST['sqlSelect3'];
$label1 = $_POST['label1'];
$label2 = $_POST['label2'];
$lbl1 = $_POST['lbl1'];
$lbl2 = $_POST['lbl2'];
$lbl3 = $_POST['lbl3'];
if(!$sidx){ $sidx = 1; }
$query = pg_query($conn,$sqlCount);
$row = pg_fetch_row($query);
$count = $row[0];
if($count > 0 && $limit > 0){ $total_pages = ceil($count/$limit); }
else{ $total_pages = 0; }
if($page > $total_pages){ $pages = $total_pages; }
$start = $limit*page - $limit;
if($start < 0){ $start = 0; }
header("Content-type: text/xml;charset=utf-8");
$s = "<?xml version='1.0' encoding='utf-8'?>
<rows>
<page>".$page."</page>
<total>".$total_pages."</total>
<records>".$count."</records>";
$sqlSelect .= " ORDER BY $sidx $sord LIMIT $limit OFFSET $start ";
$query = pg_query($conn,$sqlSelect);
while($row = pg_fetch_row($query)){
$s .= "<row id='".$row[0]."'>";
if($lbl1){ $s .= "<cell>$lbl1</cell>"; }
$s .= "<cell>".$row[0]."</cell>
<cell>".$row[1]."</cell>";
if($label1){ $s.= "<cell>$label1</cell>"; }
$s .= "<cell>".$row[2]."</cell>
<cell>".$row[3]."</cell>
<cell>".$row[4]."</cell>
<cell>".$row[5]."</cell>
<cell>".$row[6]."</cell>
<cell>".$row[7]."</cell>
<cell>".$row[8]."</cell>
<cell>".$row[9]."</cell>
<cell>".$row[10]."</cell>
<cell>".$row[11]."</cell>
<cell>".$row[12]."</cell>
<cell>".$row[13]."</cell>
<cell>".$row[14]."</cell>
<cell>".$row[15]."</cell>
</row>";
}
if($sqlSelect2){
$sqlSelect2 .= " ORDER BY $sidx $sord LIMIT $limit OFFSET $start ";
$query = pg_query($conn,$sqlSelect2);
while($row = pg_fetch_row($query)){
$s .= "<row id='".$row[0]."'>";
if($lbl2){ $s .= "<cell>$lbl2</cell>"; }
$s .= " <cell>".$row[0]."</cell>
<cell>".$row[1]."</cell>";
if($label2){ $s .= "<cell>$label2</cell>"; }
$s .= "<cell>".$row[2]."</cell>
<cell>".$row[3]."</cell>
<cell>".$row[4]."</cell>
<cell>".$row[5]."</cell>
<cell>".$row[6]."</cell>
<cell>".$row[7]."</cell>
<cell>".$row[8]."</cell>
<cell>".$row[9]."</cell>
</row>";
}
}
if($sqlSelect3){
$sqlSelect3 .= " ORDER BY $sidx $sord LIMIT $limit OFFSET $start ";
$query = pg_query($conn,$sqlSelect3);
while($row = pg_fetch_row($query)){
$s .= "<row id='".$row[0]."'>";
if($lbl3){ $s .= "<cell>$lbl3</cell>"; }
$s .= " <cell>".$row[0]."</cell>
<cell>".$row[1]."</cell>";
if($label2){ $s .= "<cell>$label2</cell>"; }
$s .= "<cell>".$row[2]."</cell>
<cell>".$row[3]."</cell>
<cell>".$row[4]."</cell>
<cell>".$row[5]."</cell>
<cell>".$row[6]."</cell>
<cell>".$row[7]."</cell>
</row>";
}
}
$s .= "</rows>";
echo $s;
}
这是网格，以防出现问题：
$('#lst_users').jqGrid({
url: 'hours_func.php',
dataType: 'xml',
mtype: 'POST',
postData: {
action: 'popGrid',
sqlCount: sqlCount,
sqlSelect: sqlSelect
},
colNames:['ID','LOGIN ID','PASSWORD','FIRST NAME','LAST NAME','EMAIL','ADMIN'],
colModel:[
{ name: 'id',
required: false,
editable: false,
},
{ name: 'login_id',
editoptions: {
maxlength: 4
}
},
{ name: 'password',
editoptions: {
maxlength: 30
}
},
{ name: 'fname',
editoptions: {
maxlength: 20
}
},
{ name: 'lname',
editoptions: {
maxlength: 30
}
},
{ name: 'email',
required: false,
editoptions:{
maxlength: 30
}
},
{ name: 'admin',
editoptions: {
dataInit: function(elem){
$(elem).mask("~");
}
}
},
],
cmTemplate:{
align: 'center',
colwidth: 80,
editable: true,
required: true,
},
caption: 'Users',
pager:'#pgr_users',
editurl: 'hours_func.php',
loadonce: false,
}).navGrid('#pgr_users',
//include all buttons
{ search: false,
},
//edit options
{ bSubmit: "Edit",
width: 350,
recreateForm: true,
recreateFilter: true,
closeOnEscape: true,
editData: {
action: 'grdUsers',
id: function(){
var id = $('#lst_users').jqGrid('getGridParam','selrow');
var val = $('#lst_users').jqGrid('getCell',id,'id');
return val;
}
},
},
//add options
{ bSubmit: "Add",
width: 350,
recreateForm: true,
recreateFilter: false,
closeOnEscape: true,
editData: { action: 'grdUsers' }
},
//delete options
{ recreateForm: false,
recreateFilter: false,
closeOnEscape: true,
delData: {
action: 'grdUsers',
id: function() {
var sel_id = $('#lst_users').jqGrid('getGridParam','selrow');
var value = $('#lst_users').jqGrid('getCell', sel_id, 'id');
return value;
}
}
},
//search options
{},
//view options
{}
);
答案 0 :(得分：2)
您的设置方式将在服务器端处理分页。如果您使用Firebug或类似的东西，您可以看到jqGrid将向控制器发送信息，允许您过滤到正确的页面。您的控制器已经在处理数据的排序，所以现在您只需要利用分页信息来获取正确的数据页面。
以下代码适用于C＃，但它将作为示例：
您的控制器将从页面请求中的jqGrid帖子中收到以下信息
GetGridData(string sidx, string sord, int page, int rows, bool _search, string filters)
{
....
然后，您可以使用此信息来过滤jqGrid请求的数据页面，就像我在此示例中所做的那样。
...
var pagedQuery = DataSet.OrderBy(sidx + " " + sord).Skip((page - 1) * rows).Take(rows).ToList();
...