免费 JqGrid - 网格不刷新

我有一个组合框，当选择更改时，关联的网格将重新填充新数据。

<div class="container-fluid">
        <div class="row">
            <div class="col-md-4">
                <select id="Subcontractors"
                        data-bind="options: Subcontractors, optionsText: 'Subcontractor', optionsValue: 'ContractSubcontractorId', value: selectedSubcontractor, optionsCaption: '<-- Select Subcontractor -->', event:{ change: subcontractorChanged}"
                        class="form-control"></select>
            </div>
        </div>
    </div>
    <div id="containerGrid">
        <div id="divLoading" class="jqgrid-fluid-width divLoading has-error"></div>
        <table id="grid" class="grid"></table>
        <div id="pager"></div>
    </div>

网格定义如下；

var populateGrid = function (data, $form) {
    var grid = $("#grid");
    grid.jqGrid({
        data: data,
        colNames: ["Open Faults", "Address", "Fault No", "Description"],
        colModel: [
            { name: "numberOfOpenFaults", width: 50 },
            { name: "fullAddress", width: 400, align: "left" },
            { name: "faultNo", width: 50 },
            { name: "description", width: 400, align: "left" }
        ],
        prmNames: { id: "contractSubcontractorId" },
        localReader: { id: "contractSubcontractorId" },
        cmTemplate: { autoResizable: true },
        autoresize: true,
        rownumbers: true,
        viewrecords: true,
        iconSet: "fontAwesome",
        autoResizing: { compact: true },
        treeGrid: true,
        treeGridModel: "adjacency",
        ExpandColumn: "numberOfOpenFaults"
    }).jqGrid("gridResize");
    $(".divLoading").hide();
};

var getGrid = function (callback, selectedSubcontractorId) {
    var url = GetHiddenField("sir-get-open-faults-list-url").replace("#", selectedSubcontractorId);
    dataService.getList(url, callback);
};

var reloadGridWithUpdatedData = function (data) {
    var grid = $("#grid");
    var p = grid.jqGrid("getGridParam"); // get reference to all parameters
    p.data = data; // replace data parameter
    grid.trigger("reloadGrid");
};

所以当我想重新填充网格时，getGrid中的回调函数是reloadGridWithUpdatedData。否则，对于网格的初始填充，我使用函数 populateGrid。 这两个函数被正确调用，但是在函数 reloadGridWithUpdatedData 中，该行

var p = grid.jqGrid("getGridParam");

似乎没有被执行。它也不会抛出异常。难道就没有发现什么吗？

更新：首次加载数据时，数据将根据字段名称分为正确的列，正如您所期望的那样。重新加载数据时，数据列将按照它们在数据结构中的顺序排列，忽略列名称。我在网格的 p.data 属性中找到了这一点。 因此，我确保数据结构按照与列名相同的顺序重新组织，但这没有任何区别，网格无法重新加载。 那么为什么重新加载无法将新数据分配给数据列呢？

UPDATE2 - 最初网格是空的。每次选择组合框中的项目时，数据都会加载到网格中，因此数据布局是相同的。使用 Fiddler，我捕获了 2 个连续组合选择的数据；

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Date: Mon, 22 Oct 2018 07:12:09 GMT

400
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400
al Mechanical - Defect(s) Outstanding","id":70,"parent":4474,"level":1,"isLeaf":true,"expanded":false,"loaded":true},{"numberOfOpenFaults":"1","fullAddress":"8, ADMIRALS WALK, Tollers Estate COULSDON EAST, CR5 1BR","faultNo":"","description":"","id":4478,"parent":0,"level":0,"isLeaf":false,"expanded":false,"loaded":true},{"numberOfOpenFaults":"","fullAddress":"","faultNo":"3","description":"Ventilation - Grilles/air valves","id":105,"parent":4478,"level":1,"isLeaf":true,"expanded":false,"loaded":true},{"numberOfOpenFaults":"4","fullAddress":"14, ASHWOOD GARDENS, FIELDWAY, CR0 0SH","faultNo":"","description":"","id":4492,"parent":0,"level":0,"isLeaf":false,"expanded":false,"loaded":true},{"numberOfOpenFaults":"","fullAddress":"","faultNo":"4","description":"Certification Mechanical - Boiler Benchmark/Manual","id":79,"parent":4492,"level":1,"isLeaf":true,"expanded":false,"loaded":true},{"numberOfOpenFaults":"","fullAddress":"","faultNo":"6","description":"Unvented HWS Cylinder (UHC) - Pipework configuration","i
8c
d":81,"parent":4492,"level":1,"isLeaf":true,"expanded":false,"loaded":true},{"numberOfOpenFaults":"","fullAddress":"","faultNo":"7","descrip
374
tion":"Unvented HWS Cylinder (UHC) - Pipework configuration","id":86,"parent":4492,"level":1,"isLeaf":true,"expanded":false,"loaded":true},{"numberOfOpenFaults":"","fullAddress":"","faultNo":"8","description":"General Mechanical - Dry Risers","id":87,"parent":4492,"level":1,"isLeaf":true,"expanded":false,"loaded":true},{"numberOfOpenFaults":"2","fullAddress":"31, ASHWOOD GARDENS, FIELDWAY, CR0 0SH","faultNo":"","description":"","id":4498,"parent":0,"level":0,"isLeaf":false,"expanded":false,"loaded":true},{"numberOfOpenFaults":"","fullAddress":"","faultNo":"1","description":"General Mechanical - Waste","id":82,"parent":4498,"level":1,"isLeaf":true,"expanded":false,"loaded":true},{"numberOfOpenFaults":"","fullAddress":"","faultNo":"2","description":"General Mechanical - Thermostatic Mixing Valves","id":83,"parent":4498,"level":1,"isLeaf":true,"expanded":false,"loaded":true}
1
]
0

HTTP/1.1 200 OK
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Date: Mon, 22 Oct 2018 07:13:57 GMT

400
[{"numberOfOpenFaults":"2","fullAddress":"16, ACACIA ROAD, NORBURY, SW16 5PP","faultNo":"","description":"","id":4471,"parent":0,"level":0,"isLeaf":false,"expanded":false,"loaded":true},{"numberOfOpenFaults":"","fullAddress":"","faultNo":"23","description":"Accessories - Existing not replaced/removed","id":106,"parent":4471,"level":1,"isLeaf":true,"expanded":false,"loaded":true},{"numberOfOpenFaults":"","fullAddress":"","faultNo":"25","description":"Lighting - Emergency Lighting","id":123,"parent":4471,"level":1,"isLeaf":true,"expanded":false,"loaded":true},{"numberOfOpenFaults":"1","fullAddress":"85, ACADEMY GARDENS, ADDISCOMBE, CR0 6QL","faultNo":"","description":"","id":4473,"parent":0,"level":0,"isLeaf":false,"expanded":false,"loaded":true},{"numberOfOpenFaults":"","fullAddress":"","faultNo":"4","description":"Alarms - Location","id":85,"parent":4473,"level":1,"isLeaf":true,"expanded":false,"loaded":true},{"numberOfOpenFaults":"1","fullAddress":"137, ACADEMY GARDENS, ADDISCOMBE, CR0 6QN","faultNo":"","des
400
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0

首先，您使用的数据存在小但重要的问题。必须更换一个

"parent": 0

网格的所有根元素中的属性

"parent": null

它修复了 TreeGrid 中的排序问题。看旧答案 https://stackoverflow.com/a/7332627/315935更多细节。

要了解重新加载 TreeGrid 数据的问题，需要查看以下几行免费的 jqGrid 代码：

// fix to allow to load TreeGrid using datatype:"local", data:mydata instead of treeGrid: true
if (p.treeGrid && p.datatype === "local" && p.data != null && p.data.length > 0) {
    p.datatype = "jsonstring";
    p.datastr = p.data;
    p.data = [];
}

populate.call(ts);

see here https://github.com/free-jqgrid/jqGrid/blob/v4.15.5/js/grid.base.js#L6328-L6335。这意味着免费的jqGrid的代码允许使用datatype: "local" and data参数作为输入simplifyTreeGrid 的用法，但它仍然使用旧的 jqGrid 方法来加载 TreeGrid 数据。

由于 TreeGrid 数据的重新加载会有些不同，例如以下内容：

var reloadGridWithUpdatedData = function (data) {
    var grid = $("#grid"),
        p = grid.jqGrid("getGridParam");

    p.data = [];
    p.datatype = "jsonstring";
    p.datastr = data;

    grid[0].grid.populate.call(grid[0]);
};

请参阅此处相应的演示：https://jsfiddle.net/OlegKi/o1bhpLyu/ https://jsfiddle.net/OlegKi/o1bhpLyu/