How to display a controller variable in a sapui5 XML view?

Question

How can I display a controller-variable in my sapUI5 XML-view?

So far I have a controller:

sap.ui.define([
    "sap/ui/core/mvc/Controller"
], function (Controller) {
    "use strict";

    return Controller.extend("sap.ui.demo.myApp.myController", {
        onInit: function () {
            this.myName = "Jon Doe";
        }
    });
});

And a XML-view:

<mvc:View
    controllerName="sap.ui.demo.myApp.myController"
    xmlns="sap.m">
<Panel>
    <content>
        <Label text="bind controller myName to this label"/>
    </content>
</Panel>

Is this possible without using Model-bindings? If not: what is the smartest (shortest) way to do it?

Solution 1

Why do you want to avoid model binding? With model binding maybe not the shortest, but a typical short way would be:

sap.ui.define([
"sap/ui/core/mvc/Controller", "sap/ui/model/json/JSONModel"
], function (Controller, JSONModel) {
"use strict";

    return Controller.extend("sap.ui.demo.myApp.myController", {
        onInit: function () {
            this.myName = "Jon Doe";
            var oViewModel = new JSONModel({myName: this.myName});
            this.getView().setModel(oViewModel,"view");
        }
    });
});

and the binding in the view:

<mvc:View
    controllerName="sap.ui.demo.myApp.myController"
    xmlns="sap.m">
<Panel>
    <content>
        <Label text="{view>/myName}"/>
    </content>
</Panel>

Solution 2

I don't think it is possible to use controller variables in the view.

But there is a shortcut to this problem: just get the desired control by its id from the view after the view is rendered and set any value you want to the control:

return Controller.extend("sap.ui.demo.myApp.myController", {
    onAfterRendering: function () {
        sap.ui.getCore().byId(this.createId("<label's id>")).setText("Jon Doe");
    }
});

Of course, the "Jon Doe" text from the above example could be a variable:

var sText = "Jon Doe";
sap.ui.getCore().byId(this.createId("<label's id>")).setText(sText);