jQGrid本地排序数据两列分组

Question

我们假设我在本地数据jqGrid中有两列，其中一列是name列，另一列是date列。 name列中可能存在重复项。我想要的是当我对名称列进行排序时，它会被排序，但对于重复项，日期列将进行二次排序。

例如，假设数据如下：

Date             Name
1/2/2013         EBC
1/3/2013         BBC
2/4/2013         EBC
3/2/2013         BBC
4/3/2013         ABC
4/2/2013         ABC

我希望它的排序方式如下：

Date             Name
4/2/2013         ABC
4/3/2013         ABC
1/3/2013         BBC
3/2/2013         BBC
1/2/2013         EBC
2/4/2013         EBC

您可以看到日期也已排序。相反，当我现在排序时，我看到的是这样的事情：

我的colModel很简单：

{
    name : 'ymd',
    index : 'ymd',
    width : 90,
    sorttype : "date",
    align : 'center',
    search : true
}, 
{
    name : 'placement_inv_code',
    index : 'placement_inv_code',
    width : 80,
    align : 'center',
    search : true
}

无论如何，当我使用本地数据进行初始化时，有一种简单的方法可以进行这种排序吗？

数据样本：

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Answer 1

如果使用本地数据类型，则可以使用简单而灵活的问题解决方案。您需要在第二个sorttype（'名称'）列中将placement_inv_code属性定义为。函数sorttype有两个参数。第二个参数（例如obj）允许您访问该行的所有其他列（如obj.ymd）。在排序期间，jqGrid将使用sorttype函数返回的值。您会找到此类实施的示例here，here，here以及其他旧答案。

更新：The demo对sorttype列使用以下placement_inv_code

sorttype: function (cellValue, item) {
    return cellValue + '_' + item.ymd;
}

结果是，如果用户点击placement_inv_code列，jqGrid使用item.placement_inv_code + '_' + item.ymd字符串来排序排序期间行的顺序。结果你会看到

顺便说一下，即使我们以另一种格式显示日期列，item.ymd的格式也会相同（如"2013-09-19"）。请参阅modified demo以证明这一点。如果在sorttype回调中设置断点，您仍会看到与输入数据中相同的ISO 8601日期格式的item.ymd。因此sorttype回调将帮助jqGrid以正确的方式对数据进行排序。

Answer 2

如果你在jqGrid版本4.5.0或更高版本，他们已经添加了多项（通过http://www.trirand.com/jqgridwiki/doku.php?id=wiki:change的更改日志）

我个人试图实现这个并且不是最成功的，所以最终通过服务器端逻辑实现它，但是使用localdata你可能会有更好的运气。

我能引用你的最多的是这个问题： http://www.trirand.com/blog/?page_id=393/bugs/cant-sortgrid-with-multiple-columns-when-multisorttrue/