Javascript 如何检查 Kendo Grid 是否对其进行了更改？
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How do I check if a Kendo Grid has had changes made to it?
提问by muthucsm
How can I check if a Kendo Gridhas changes? I heard that there is a dirtyproperty, but I cant find it.
如何检查Kendo Grid是否有更改？我听说有一个dirty属性，但我找不到它。
采纳答案by carlg
Added rows will have the dirty property set to true and so will updated rows. But, deleted rows are stored elsewhere (in the _destroyed collection). Pass this function the datasource of your grid to see if it has changes.
添加的行会将脏属性设置为 true，更新的行也会如此。但是，删除的行存储在其他地方（在 _destroyed 集合中）。将此函数传递给网格的数据源以查看它是否有更改。
function doesDataSourceHaveChanges(ds)
{
var dirty = false;
$.each(ds._data, function ()
{
if (this.dirty == true)
{
dirty = true;
}
});
if (ds._destroyed.length > 0) dirty = true;
return dirty;
}
回答by Chris Pietschmann
You can use the 'hasChanges' method on the Grid's underlying DataSource:
您可以在网格的底层数据源上使用“hasChanges”方法：
grid.dataSource.hasChanges();
$('#divGrid').data('kendoGrid').dataSource.hasChanges();
回答by Petur Subev
You can get notified and use the change event of the dataSource which will occur wherever you page/sort/group/filter/create/read/update/delete record.
您可以获得通知并使用数据源的更改事件，该事件将在您页面/排序/组/过滤器/创建/读取/更新/删除记录的任何地方发生。
To attach a handler to it use:
要将处理程序附加到它，请使用：
$('#YourGrid').data().kendoGrid.dataSource.bind('change',function(e){
//the event argument here will indicate what action just happned
console.log(e.action)// could be => "itemchange","add" or "remove" if you made any changes to the items
})
Update: If the user has updated any of the models .hasChanges() method of the dataSource will return true.
更新：如果用户更新了任何模型，dataSource 的 .hasChanges() 方法将返回 true。
回答by Ricardo Bermudez
grid.dataSource.hasChanges will let you know if the datasource has changed
grid.dataSource.hasChanges 将让您知道数据源是否已更改
if (datasource.hasChanges() === true) {
alert('yes');
} else {
alert('no');
}
回答by Marco
The most convinient way to go is to use datasource.hasChanges(). However, this requires that the Idfield is defined in the schema.
最方便的方法是使用datasource.hasChanges(). 但是，这需要Id在架构中定义该字段。
From the docs:
从文档：
Checks if the data items have changed. Requires an [ID field] to be configured in schema.model.id, otherwise will always return true.
检查数据项是否已更改。需要在schema.model.id中配置[ID字段]，否则将始终返回true。
If you do not have an Id field defined, you can use one of the countless ways to iterate over the data itself.
如果您没有定义 Id 字段，您可以使用无数种方法中的一种来迭代数据本身。
var isDataSourceDirty = function (ds) {
var dirty = ds._data.filter(function(x){
return x.dirty === true;
});
return dirty.length > 0 || ds._destroyed.length;
};
回答by Ann B. G.
worth a try:
值得一试：
var hasDirtyRow = $.grep(gridDataSource.view(), function(e) { return e.dirty === true; });
if (hasDirtyRow.length != 0)
{
// grid has dirty row(s)
}
