0

我有以下网格:

 var gridMyTasks = $('#gridMyTasks').jqGrid({
    jsonReader: { root: 'rows', repeatitems: false, id: 'ID' },
    datatype: 'json',
    colNames: ['Task ID', 'Task Name', 'Project Name', 'Task Stage', 'Doc Type', 'Due Date'],
    colModel: [
          { name: 'ShortCode', width: 70, jsonmap: 'ShortCode', sortable: false },
          { name: 'TaskName', width: 200, jsonmap: 'TaskName', formatter: 'fmtTaskName', sortable: false },
          { name: 'ProjName', width: 200, jsonmap: 'ProjName', formatter: 'fmtName', sortable: false },
          { name: 'TaskStage', width: 100, jsonmap: 'TaskStage', sortable: false },
          { name: 'DocType', width: 130, jsonmap: 'DocType', sortable: false },
          { name: 'DueDate', width: 70, jsonmap: 'DueDate', sortable: false }
  ],
    rowNum: 0,
    height: 'auto',
    autowidth: true,
    forceFit: true,
    multiselect: false,
    caption: '',
    altclass: 'zebra',
    altRows: true,
    hoverrows: false,
    gridview: true,
    sortable: false,
    grouping: true,
    groupingView: { groupField: ['ProjName'], groupDataSorted: true }
 });

当我的页面加载时,我调用一个 Web 服务来获取前 15 行并将其添加到网格中:

 TPM.GetHomepageData(function (results) // AJAX web service to load data
 {
    gridMyTasks[0].addJSONData({ rows: results.Tasks });
    if (results.Tasks.length >= 15) $('#divTaskFooter').show(); // Enable "Show All" link

    gridMyTasks.show();
 }, null);

这很好用。但是,对于拥有超过15 行数据的用户,我有一个“全部显示...”链接。这将再次调用 Web 服务,但传入一个参数以指示我想要所有行。这连接如下:

var loadGrid = function (limit)
{
   TPM.GetMyTasks(limit, curSort, curDir, function (results)
   {
      grid.clearGridData(true); // should clear the existing rows first?
      grid[0].addJSONData({ rows: results }); // *all* rows, not sure new ones
      link.html(expanded ? 'Show less...' : 'Show all...');
   }, null);
};

moreLink.click(function (event) // When user clicks "Show All", load all the data
{
   expanded = !expanded;
   loadGrid(expanded ? null : 15);
   event.preventDefault();
});

在本例中,results是一个 18 行的数组,并且这个数据是正确的。然而,发生的事情是原来的 15 行仍然存在,添加了 18 行,然后我总共有 33 行。换句话说,网格没有被首先清除。

如果我注释掉这一addJSONData行:

grid.clearGridData(true);
//grid[0].addJSONData({ rows: results });

然后,网格将清除,我将看到零行。所以,就好像网格被清除了,然后旧数据像一堆不死僵尸行一样复活,重复的行被钉上去。我一定做错了什么。

更新:为 Oleg 添加 HTTP 流量捕获

初始负载:

POST http://oursite.com/TPM.svc/GetHomepageData HTTP/1.1
Accept: */*
Accept-Language: en-us
Referer: oursite.com
x-requested-with: XMLHttpRequest
Content-Type: application/json; charset=utf-8
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET CLR 1.1.4322; .NET4.0C; .NET4.0E)
Host: oursite.com
Content-Length: 0
Connection: Keep-Alive
Pragma: no-cache
Cookie: SMSESSION=Unimportant

回复:

HTTP/1.1 200 OK
Cache-Control: private
Content-Length: 893
Content-Type: application/json; charset=utf-8
Server: Microsoft-IIS/7.5
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Thu, 25 Jul 2013 16:57:43 GMT

{"d":{ ... A bunch of JSON here ...}}

全部显示 点击:

POST http://oursite.com/TPM.svc/GetMyTasks HTTP/1.1
Accept: */*
Accept-Language: en-us
Referer: oursite.com
x-requested-with: XMLHttpRequest
Content-Type: application/json; charset=utf-8
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET CLR 1.1.4322; .NET4.0C; .NET4.0E)
Host: oursite.com
Content-Length: 42
Connection: Keep-Alive
Pragma: no-cache
Cookie: SMSESSION=Unimportant

{"limit":null,"orderBy":null,"desc":false}

回复:

HTTP/1.1 200 OK
Cache-Control: private
Content-Length: 1762
Content-Type: application/json; charset=utf-8
Server: Microsoft-IIS/7.5
set-cookie: SMSESSION=...
Set-Cookie: SMSESSION=...
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Thu, 25 Jul 2013 17:01:55 GMT

{"d":{ ... A bunch of JSON here ...}}
4

1 回答 1

1

我希望,我正确理解你的问题。这个问题在我看来很容易。jqGrid 默认向服务器发送一些参数(pagerowssidxsord)。因为您实现了服务器端分页,所以您已经使用了参数。您写道,您在开始时加载了前 15 行。这意味着对服务器的请求包含page=1and rows=15。该值15rowNumjqGrid的参数值。

要加载所有行,您只需将rowNum参数的值更改为某个较大的值,例如 10000 并重新加载网格。对应的代码可以如下

$("#grid").jqGrid("setGridParam", {rowNum: 10000})
    .trigger("reloadGrid", [{page: 1, current: true}]);

参数见答案reloadGrid。我page: 1在上面使用以确保在单击“全部显示...”链接之前使用不会更改寻呼机中的当前页面。

于 2013-07-25T07:22:52.017 回答