使用分类器进行分类基本上可以正常工作。一栏是全名（例如“史蒂夫·乔布斯”）。我在该实体集中只有全名，但是我想在单击全名列标题时按姓氏（全名的姓氏）对条目进行排序。有什么方法可以做到这一点？
答案 0 :(得分：1)
您需要为分类器定义一个自定义比较器，该分类器仅在客户端所有实体可用时才应用 ，例如，将# The select statement is passed a string.
cars_subset_2b <- function( select_statement ) {
cars %>%
dplyr::select(!!select_statement)
}
cars_subset_2b("dist")
设置为{{ 1}}在定义OData列表绑定时。 API
operationMode'Client'
Btw：如果服务已实现服务器端分页，则当前为doesn't fetch all entities的“客户端”操作模式。
如上例所示，Sorter constructor可以处理自定义比较器，该自定义比较器将在调用sap.ui.getCore().attachInit(() => sap.ui.require([
"sap/ui/model/odata/v2/ODataModel",
"sap/ui/core/mvc/XMLView",
"sap/ui/model/json/JSONModel",
"sap/ui/model/Sorter",
], (ODataModel, XMLView, JSONModel, Sorter) => {
"use strict";
const odataModel = new ODataModel({
serviceUrl: [
"https://cors-anywhere.herokuapp.com/",
"https://services.odata.org/V2/Northwind/Northwind.svc/",
].join(""),
tokenHandling: false,
preliminaryContext: true,
});
Promise.all([
odataModel.metadataLoaded(),
sap.ui.getCore().loadLibrary("sap.m", true),
]).then(() => XMLView.create({
definition: `<mvc:View xmlns:mvc="sap.ui.core.mvc"
xmlns="sap.m"
xmlns:core="sap.ui.core"
height="100%"
>
<App>
<Page showHeader="false">
<Table id="myResponsiveTable"
items="{
path: '/Customers',
parameters: {
select: 'CustomerID, ContactName',
operationMode: 'Client'
}
}"
>
<columns>
<Column id="customerIdColumn"
sortIndicator="{colCustomerId>/sortOrder}"
width="33%"
>
<Text text="Customer ID">
<customData>
<core:CustomData
key="sorterPath"
value="CustomerID"
/>
</customData>
</Text>
</Column>
<Column id="fullNameColumn"
sortIndicator="{colFullName>/sortOrder}"
width="auto"
>
<Text text="Full Name">
<customData>
<core:CustomData
key="sorterPath"
value="ContactName"
/>
</customData>
</Text>
</Column>
</columns>
<ColumnListItem>
<Text text="{CustomerID}" />
<Text text="{ContactName}" />
</ColumnListItem>
</Table>
</Page>
</App>
</mvc:View>`,
afterInit: function() { // === onInit
const table = this.byId("myResponsiveTable");
activateColumnPress(table, onColumnPress);
},
models: {
undefined: odataModel,
colCustomerId: new JSONModel({ sortOrder: "None" }),
colFullName: new JSONModel({ sortOrder: "None" }),
}
}).then(view => view.placeAt("content")));
function activateColumnPress(table, handler) {
// Making columns clickable for the demo
table.bActiveHeaders = true;
table.onColumnPress = col => handler(table, col);
}
function onColumnPress(table, pressedCol) {
table.getColumns()
.filter(col => !(col.getSortIndicator() === pressedCol.getSortIndicator()))
.map(col => col.setSortIndicator("None"));
table.getBinding("items").sort(createSorter(pressedCol));
}
function createSorter(column) {
return column.getHeader().data("sorterPath") === "ContactName"
? createFullNameSorter(column, toggleSort(column.getModel("colFullName")))
: createCustomerIdSorter(column, toggleSort(column.getModel("colCustomerId")));
}
function toggleSort(colModel) {
const descending = colModel.getProperty("/sortOrder") !== "Ascending";
colModel.setProperty("/sortOrder", descending ? "Ascending" : "Descending");
return !descending;
}
function createFullNameSorter(column, descending) {
const comparator = (a, b) => a.split(" ").pop().localeCompare(b.split(" ").pop());
return new Sorter("ContactName", descending, false, comparator);
}
function createCustomerIdSorter(column, descending) {
return new Sorter("CustomerID", descending);
}
}));方法时被调用。为了比较全名的最后一部分，您可以这样定义比较器：
<script id="sap-ui-bootstrap"
src="https://openui5.hana.ondemand.com/resources/sap-ui-core.js"
data-sap-ui-libs="sap.ui.core"
data-sap-ui-async="true"
data-sap-ui-compatversion="edge"
data-sap-ui-theme="sap_belize"
data-sap-ui-xx-waitfortheme="true"
></script>
<body id="content" class="sapUiBody sapUiSizeCompact" style="height: 100%;"></body>