在 JS 中将 OData V2 Edm.Decimal 值转换为与语言环境相关的十进制数
[英]Converting OData V2 Edm.Decimal value to a locale-dependent decimal number in JS
问题描述
I'm trying to convert a string number and display it as a decimal number.
我正在尝试转换字符串数字并将其显示为十进制数字。 For example: "3125000.000" → 3,125,000.00 .例如： "3125000.000" → 3,125,000.00 。
In the XML I wrote:在 XML 中，我写道：
<Text xmlns="sap.m"
id="text13"
text="{
path: 'Amount',
type: 'sap.ui.model.odata.type.Decimal',
constraints: {
scale: 2
}
}"
/>
It works well.它运作良好。 How can I display that value from the Controller.js?如何从 Controller.js 显示该值？
It doesn't matter, whether the converted value is of type string or number .转换后的值是string类型还是number类型并不重要。 I just want to display that value with the commas and the .00 .我只想用逗号和.00显示该值。
2 个解决方案
解决方案1
1 2020-08-24 09:11:11
Property binding with data type can be achieved in JS, similar to the XML variant, by assigning the type to type but passing the settings in its constructor function instead:可以在 JS 中实现与数据类型的属性绑定，类似于 XML 变体，通过将类型分配给type但在其构造函数中传递设置：
Constructor for a primitive type
Edm.Decimal.Edm.Decimal构造Edm.Decimal。
new sap.ui.model.odata.type.Decimal(oFormatOptions?, oConstraints?)
new Text({
text: {
path: "Amount",
type: new ODataDecimalType({ // required from "sap/ui/model/odata/type/Decimal"
// Optional format options: ...
}, {
// Optional constraints:
scale: 2
}),
}
});
Here is a demo:这是一个演示：
sap.ui.getCore().attachInit(() => sap.ui.require([ "sap/m/Title", "sap/ui/model/odata/type/Decimal", ], (Title, ODataTypeDecimal) => new Title({ text: { value: "3125000.000", // sample OData decimal value from the model type: new ODataTypeDecimal({}, { scale: 2 }), }, titleStyle: "H1", }).addStyleClass("sapUiTinyMargin").placeAt("content")));
<script id="sap-ui-bootstrap" src="https://openui5.hana.ondemand.com/resources/sap-ui-core.js" data-sap-ui-libs="sap.ui.core,sap.m" data-sap-ui-theme="sap_fiori_3_dark" data-sap-ui-async="true" data-sap-ui-compatversion="edge" data-sap-ui-xx-waitfortheme="init" ></script><body id="content" class="sapUiBody"></body>
Data types can be also used outside of the property binding independently:数据类型也可以在属性绑定之外独立使用：
// ODataDecimalType required from "sap/ui/model/odata/type/Decimal"
const myType = new ODataDecimalType({}, { scale: 2 });
myType.formatValue("3125000.000", "string") // returns: "3,125,000.00"
API reference: sap.ui.model.odata.type.Decimal API 参考： sap.ui.model.odata.type.Decimal
If user's current locale is eg de-DE , the return value would be then "3.125.000,00" .如果用户的当前语言环境是例如de-DE ，则返回值将是"3.125.000,00" 。
Note: the locale is automatically detected by the framework according to user's preference in their browser settings (See Identifying the Language Code / Locale ).注意：框架会根据用户在浏览器设置中的偏好自动检测区域设置（请参阅识别语言代码/区域设置）。 I do not recommend hard-coding it unless it's absolutely required.除非绝对需要，否则我不建议对其进行硬编码。
解决方案2
0 已采纳 2020-08-24 06:32:25
I think this documentation answers your question (if I understood it correctly)我认为这个文档回答了你的问题（如果我理解正确的话）
From documentation:从文档：
var oFormatOptions = { minIntegerDigits: 3, maxIntegerDigits: 5, minFractionDigits: 2, maxFractionDigits: 4 }; // NumberFormat required from "sap/ui/core/format/NumberFormat" var oFloatFormat = NumberFormat.getFloatInstance(oFormatOptions); oFloatFormat.format(1.1); // returns 001.10 oFloatFormat.format(1234.567); // returns 1,234.567
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