我有一个JQuery网格,我每次在服务器上发生某些事件时重新加载(即在数据集中更新)并在网格中显示最新的数据集。这个网格在它的第一列中也有复选框。正在发生的事情是,假设用户正在选择一些复选框,同时如果网格由于服务器上的数据更新而重新加载,我的网格会重新加载最新的数据集,但我以前的所有复选框都会丢失。如何在网格重新加载后再次标记这些选中的复选框?
请建议。
function PushData() {
// creates a proxy to the Alarm hub
var alarm = $.connection.alarmHub;
alarm.notification = function () {
$("#jqTable").trigger("reloadGrid",[{current:true}]);
};
// Start the connection and request current state
$.connection.hub.start(function () {
BindGrid();
});
}
function BindGrid() {
jqDataUrl = "Alarm/LoadjqData";
var selectedRowIds;
$("#jqTable").jqGrid({
url: jqDataUrl,
cache: false,
datatype: "json",
mtype: "POST",
multiselect: true ,
postData: {
sp: function () { return getPriority(); },
},
colNames: ["Id", "PointRef", "Value", "State", "Ack State", "Priority", "AlarmDate", "", ""],
colModel: [
//{ name: 'alarmId_Checkbox', index: 'chekbox', width: 100, formatter: "checkbox", formatoptions: { disabled: false }, editable: true, edittype: "checkbox" },
{ name: "AlarmId", index: "AlarmId", width: 70, align: "left" },
{ name: "PointRef", index: "PointRef", width: 200, align: "left" },
{ name: "Value", index: "Value", width: 120, align: "left" },
{ name: "AlarmStateName", index: "AlarmStateName", width: 150, align: "left" },
{ name: "AcknowledgementStateName", index: "AcknowledgementStateName", width: 200, align: "left" },
{ name: "Priority", index: "Priority", width: 130, align: "left" },
{ name: "AlarmDate", index: "AlarmDate", width: 250, align: "left" },
{ name: "TrendLink", index: "Trends", width: 100, align: "left" },
{ name: "MimicsLink", index: "Mimics", width: 100, align: "left" }
],
// Grid total width and height
width: 710,
height: 500,
hidegrid: false,
// Paging
toppager: false,
pager: $("#jqTablePager"),
rowNum: 20,
rowList: [5, 10, 20],
viewrecords: true, // "total number of records" is displayed
// Default sorting
sortname: "Priority",
sortorder: "asc",
// Grid caption
caption: "Telemetry Alarms",
onCellSelect: function (rowid, icol, cellcontent, e) {
var cm = jQuery("#jqTable").jqGrid('getGridParam', 'colModel');
var colName = cm[icol];
//alert(colName['index']);
if (colName['index'] == 'AlarmId') {
if ($("#AlarmDialog").dialog("isOpen")) {
$("#AlarmDialog").dialog("close");
}
AlarmDialogScript(rowid)
}
else if (colName['index'] == 'Trends') {
TrendDialogScript(rowid)
}
else if (colName['index'] == 'Mimics') {
MimicsDialogScript(rowid)
}
else {
$("#jqTable").setCell(rowid, "alarmId_Checkbox", true); //Selects checkbox while clicking any other column in the grid
}
},
recreateFilter: true,
emptyrecords: 'No Alarms to display',
loadComplete: function () {
var rowIDs = jQuery("#jqTable").getDataIDs();
for (var i = 0; i < rowIDs.length; i++) {
rowData = jQuery("#jqTable").getRowData(rowIDs[i]);
//change the style of hyperlink coloumns
$("#jqTable").jqGrid('setCell', rowIDs[i], "AlarmId", "", { 'text-decoration': 'underline', 'cursor': 'pointer' });
$("#jqTable").jqGrid('setCell', rowIDs[i], "TrendLink", "", { 'text-decoration': 'underline', 'cursor': 'pointer' });
$("#jqTable").jqGrid('setCell', rowIDs[i], "MimicsLink", "", { 'text-decoration': 'underline', 'cursor': 'pointer' });
if ($.trim(rowData.AcknowledgementStateName) == 'Active') {
$("#jqTable").jqGrid('setCell', rowIDs[i], "AcknowledgementStateName", "", { 'background-color': 'red', 'color': 'white' });
}
else if ($.trim(rowData.AcknowledgementStateName) == 'Acknowledged') {
$("#jqTable").jqGrid('setCell', rowIDs[i], "AcknowledgementStateName", "", { 'background-color': 'Navy', 'color': 'white' });
}
}
//$("#jqTable").jqGrid('hideCol', "AlarmId") //code for hiding a particular column
},
gridComplete: function () {
$('#jqTable input').bind('mouseover', function () {
var tr = $(this).closest('tr');
if ($("#AlarmDialog").dialog("isOpen")) {
$("#AlarmDialog").dialog("close");
}
AlarmDialogScript(tr[0].id);
}
);
}
}).navGrid("#jqTablePager",
{ refresh: true, add: false, edit: false, del: false },
{}, // settings for edit
{}, // settings for add
{}, // settings for delete
{sopt: ["cn"]} // Search options. Some options can be set on column level
)
.trigger('reloadGrid', [{page:1, current:true}]);
}
答案 0 :(得分:3)
如果我理解你的正确,你需要使用额外的参数i
$("#list").trigger("reloadGrid", [{current:true}]);
或
$("#list").trigger("reloadGrid", [{page: 1, current: true}]);
(见the answer)。它与Justin建议的几乎相同。
在重新加载网格时,根据你想要的确切含义,你需要的是保存网格状态,包括localStorage
中所选项目的列表,并在加载网格后重新加载状态。 This answer详细描述了实施。使用版本4.3.2中引入的新jqGrid事件可以简化答案中相应的demo。
答案 1 :(得分:2)
您可以在重新加载网格之前保存选择,例如在beforeRequest
事件中:
selectedRowIDs = jQuery('#myGrid').getGridParam('selarrrow');
然后,在重新加载网格后,您可以循环selectedRowIDs
并使用setSelection
重新选择每个网格。例如:
for (i = 0, count = selectedRowIDs.length; i < count; i++) {
jQuery('#myGrid').jqGrid('setSelection', selectedRowIDs[i], false);
}
您可以在loadComplete
事件中运行此代码。
答案 2 :(得分:0)
使用
recreateFilter: true
你应该完成