How to access component model from outside - sapui5

Question

I have created a shell-in-shell construct in the index.html:
sap.ui.getCore().attachInit(function () {
// create a new Shell that contains the root view
var oShell = new sap.m.Shell({
id: "appShell",
app: new sap.ui.core.ComponentContainer({
name: "internal_app",
height: "100%"
})
});
// load the view that contains the unified shell
var oAppShellView = sap.ui.view({
type: sap.ui.core.mvc.ViewType.XML,
viewName: "internal_app.view.AppShell"
});
// access the unified shell from the view
var oUnifiedShell = oAppShellView.byId("unifiedShell");
// place the app shell in the unified shell
oUnifiedShell.addContent(oShell);
oAppShellView.placeAt("content");
});
In addition, a default model has been defined in manifest.json:
....
},
"models": {
"": {
"type": "sap.ui.model.json.JSONModel"
}
},
....
In the controller of the view internal_app.view.AppShell (which has been created by the code snippet above) I would now like to access the default model but neither this.getModel() nor this.getOwnerComponent().getModel() (getModel() and getOwnerComponent() return undefined) worked. I assume that the AppShell controller does not have an owner. But how can I access the default model in the onInit of that controller?

Answer 1

The app structure in your case is somewhat unusual - Nevertheless, you can always access the model, defined in manifest.json, as long as you can access the inner component.
Assuming this is referencing the controller of the internal_app.view.AppShell, you can get the default model like this:
onInit: function() {
var innerShell = sap.ui.getCore().byId("appShell"); // only if the app is standalone
this.componentLoaded(innerShell.getApp()).then(this.onComponentCreated.bind(this));
},
componentLoaded: function(componentContainer) {
var component = componentContainer.getComponent();
return component ? Promise.resolve(component) : new Promise(function(resolve) {
componentContainer.attachEventOnce("componentCreated", function(event) {
resolve(event.getParameter("component"));
}, this);
}.bind(this));
},
onComponentCreated: function(component) {
var myDefaultModel = component.getModel(); // model from manifest.json
// ...
}