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sapui5 - Date Mismatch in UI5 Application

I have a DatePicker in UI5 application. My server is in Australia. When I create any record in IST time, it is working fine. But when a user tries to create any record in Australia, the date value is incremented by 1. That is "31" coming as "32". Do I need to consider the time zone?

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UI5 already takes care of handling dates properly if you use the binding type sap.ui.model.odata.type.DateTime in the value binding definition of your DatePicker.

  • Display the date in UTC by adding UTC: true to the formatOptions (Optional).
  • Store the date in UTC by adding displayFormat: 'Date' to the constraints.

    In sap.ui.model.odata.v2.ODataModel, this type (sap.ui.model.odata.type.DateTime) is represented as a Date. With the constraint displayFormat: 'Date', the time zone is UTC and the time part is ignored.

    (...) In this case, only the date part is used, the time part is always 00:00:00, and the time zone is UTC to avoid time-zone-related problems.

Here is a live demo:

sap.ui.getCore().attachInit(() => sap.ui.require([
  "sap/ui/model/odata/v2/ODataModel",
  "sap/ui/core/mvc/XMLView",
], function(ODataModel, XMLView) {
  "use strict";

  const model = new ODataModel({
    serviceUrl: [
      "https://cors-anywhere.herokuapp.com/", // proxy
      "https://services.odata.org/V2/(S(SO46024229))/OData/OData.svc",
    ].join(""),
    defaultBindingMode: "TwoWay",
    preliminaryContext: true,
    tokenHandling: false, // service does not provide CSRF tokens
  });

  Promise.all([
    sap.ui.getCore().loadLibrary("sap.m", true),
    sap.ui.getCore().loadLibrary("sap.ui.unified", true),
  ]).then(() => XMLView.create({
    definition: `<mvc:View xmlns:mvc="sap.ui.core.mvc" height="100%">
      <DatePicker id="dp" xmlns="sap.m" width="auto" placeholder="Date"
        binding="{
          path: '/Products(0)',
          parameters: {
            select: 'ID,ReleaseDate'
          }
        }"
        value="{
          path: 'ReleaseDate',
          type: 'sap.ui.model.odata.type.DateTime',
          constraints: {
            displayFormat: 'Date',
            nullable: false
          }
        }"
      />
    </mvc:View>`,
    models: model,
    afterInit: function() {
      const fn = e => e.getSource().getBindingContext().getModel().submitChanges();
      this.byId("dp").attachChange(fn);
    },
  }).then(view => {
    const messageManager = sap.ui.getCore().getMessageManager();
    messageManager.registerObject(view.placeAt("content"), true);
  }));
}));
<script id="sap-ui-bootstrap" src="https://ui5.sap.com/resources/sap-ui-core.js"
  data-sap-ui-libs="sap.ui.core"
  data-sap-ui-theme="sap_fiori_3"
  data-sap-ui-async="true"
  data-sap-ui-compatversion="edge"
  data-sap-ui-modules="sap/ui/thirdparty/datajs"
  data-sap-ui-xx-waitfortheme="rendering"
></script><body id="content" class="sapUiBody sapUiSizeCompact"></body>

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