[英]Set datasouce of child grid using datasource of parent grid in Kendo UI
我有這個表格:
@*Some form fields here that accept startDate and endDate*@
<div>
<button id="searchButton">Search</button>
</div>
<div class="col-md-12 row">
@(Html.Kendo()
.Grid<ProjectName.DataModels.Models.Customer>()
.Name("CustomerGrid")
.Columns(columns =>
{
columns.Bound(e => e.CustomerId);
columns.Bound(e => e.SomeCustomerColumn);
})
.ClientDetailTemplateId("OrderDetails")
.AutoBind(false) // Don't load the data yet because I'll need to supply parameters for the fetch
.DataSource(dataSource => dataSource
.Ajax()
.Events(events=>events.Change("loadChildGrid"))
.PageSize(20)
.Model(model => model.Id("CustomerId", typeof(string)))
.Read(read => read.Action("GetCustomersAsync", "Customer").Data("passArguments"))
)
)
<script id="OrderDetails" type="text/kendo-tmpl">
@(Html.Kendo()
.Grid<ProjectName.DataModels.Models.Order>()
.Name("OrderDetails_#=CustomerId#")
.Columns(columns =>
{
columns.Bound(o => o.ProductName);
columns.Bound(o => o.SomeOrderColumn);
})
.DataSource(dataSource => dataSource
.Ajax()
.PageSize(10)
.Model(model=>model.Id("OrderId"))
.ServerOperation(false)
)
.AutoBind(false)
.ToClientTemplate()
)
</script>
</div>
<script type="text/javascript">
$("#searchButton").on("click", function () {
// Load the customerGrid here:
$("#CustomerGrid").data("kendoGrid").dataSource.read();
});
function passArguments() {
var startDate = $("#startdate").data("kendoDatePicker").value();
var endDate = $("#enddate").data("kendoDatePicker").value();
return {
start: startDate,
end: endDate
}
}
// QUESTION: How to load the child grid: OrderDetails_123 by using datasource from the parent grid?
// THIS IS WHAT I'VE TRIED SO FAR:
function loadChildGrid() {
var parentData = $("#CustomerGrid").data("kendoGrid").dataSource.data();
//Initialize the child grid
$.each(parentData, childDataFeeder);
}
function childDataFeeder(index, item) {
var childGridName = "#" + "OrderDetails_" + item.CustomerId;
var childGrid = childGridName.data("kendoGrid");
childGrid.dataSource.data(value.Orders)
}
</script>
以及Customer
controller 中的一個方法:
public async Task<ActionResult> GetCustomersAsync([DataSourceRequest] DataSourceRequest request, DateTime start, DateTime end)
{
var customersWithOrders = GetDataForParentAndChildGrid(start, end);
return Json(customersWithOrders.ToDataSourceResult(request));
}
private List<Customer> GetDataForParentAndChildGrid(DateTime start, DateTime end)
{
var testData = new List<Customer>();
// Gets required data with those dates filter and perform some mathematical calculations
testData.Add(new Customer
{
CustomerId = "123",
SomeCustomerColumn = "Blah blah",
Orders = new List<Order>()
{
new Order{
OrderId = "123ABC",
CustomerId = "123",
SomeOrderColumn = "Blah Blah Blah"
}
}
});
return testData;
}
我的目標是使用主網格中已有的數據來設置子網格的數據源。 到目前為止,我嘗試將Change
事件附加到觸發loadChildGrid
function 的主網格,我嘗試從主網格中提取數據並將其中的每個項目傳遞給childDataFeeder
function 以初始化子網格的數據源。 這里的問題是,當它嘗試這樣做時,子網格還不存在(因為它不是由 Kendo 創建的,直到用戶單擊主網格中的展開圖標)。
您可以在childDataFeeder
方法中看到我到目前為止所嘗試的內容(沒有任何成功)。 所以我非常感謝你在這方面的指導。
謝謝你!
經過這么多小時的打擊和嘗試,我終於解決了它。 因此,如果遇到類似問題,我將其發布在這里以節省其他人的時間:
我在主網格中添加了一個DetailExpand
事件。 並刪除了dataSource
上的Change
事件。
@(Html.Kendo()
.Grid<ProjectName.DataModels.Models.Customer>()
.Name("CustomerGrid")
.Columns(columns =>
{
columns.Bound(e => e.CustomerId);
columns.Bound(e => e.SomeCustomerColumn);
})
.ClientDetailTemplateId("OrderDetails")
.AutoBind(false) // Don't load the data yet because I'll need to supply parameters for the fetch
.DataSource(dataSource => dataSource
.Ajax()
.PageSize(20)
.Model(model => model.Id("CustomerId", typeof(string)))
.Read(read => read.Action("GetCustomersAsync", "Customer").Data("passArguments"))
)
.Events(events => events.DataBound("dataBound").DetailExpand("onExpand"))
)
現在,每次我們在父網格中展開一行時,都會調用名為onExpand
的回調 function。 這是我現在將設置子網格的dataSource
的地方。
// Passing e is also important here because if you don't, this callback gets called
// for every row in the main grid (even when you don't expand them!)
function onExpand(e) {
var customerId = e.sender.dataItem(e.masterRow).CustomerId;
var orders = e.sender.dataItem(e.masterRow).Orders;
//Initialize the child grid as well
var childGridName = "#" + "OrderDetails_" + customerId;
var childGrid = $(childGridName).data("kendoGrid");
if (childGrid !== undefined) {
childGrid.dataSource.data(orders);
}
}
function dataBound() {
this.expandRow(this.tbody.find("tr.k-master-row").first());
}
我使用e.sender.dataItem(e.masterRow).PROPERTYNAME
從主行訪問我需要的屬性。
這現在完美無缺!
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