DEV: allows this.get in widgets (#8571)

app/assets/javascripts/discourse/widgets/widget.js.es6

@@ -12,6 +12,7 @@ import { h } from "virtual-dom";
 import DecoratorHelper from "discourse/widgets/decorator-helper";
 import { Promise } from "rsvp";
 import ENV from "discourse-common/config/environment";
+import { get } from "@ember/object";
 
 const _registry = {};
 
@@ -150,6 +151,10 @@ export default class Widget {
 
   destroy() {}
 
+  get(propertyPath) {
+    return get(this, propertyPath);
+  }
+
   render(prev) {
     const { dirtyKeys } = this;
 

test/javascripts/widgets/widget-test.js.es6

@@ -380,3 +380,23 @@ widgetTest("override settings", {
     assert.equal(find(".settings").text(), "age is 37");
   }
 });
+
+widgetTest("get accessor", {
+  template: `{{mount-widget widget="get-accessor-test"}}`,
+
+  beforeEach() {
+    createWidget("get-accessor-test", {
+      tagName: "div.test",
+      template: hbs`Hello {{transformed.name}}`,
+      transform() {
+        return {
+          name: this.get("currentUser.username")
+        };
+      }
+    });
+  },
+
+  test(assert) {
+    assert.equal(find("div.test").text(), "Hello eviltrout");
+  }
+});