[BUGFIX release] Fix blockless link-to with only query params

packages/ember-routing-views/lib/views/link.js

@@ -371,7 +371,7 @@ var LinkComponent = EmberComponent.extend({
     if (lastParam && lastParam.isQueryParams) {
       params.pop();
     }
-    let onlyQueryParamsSupplied = (params.length === 0);
+    let onlyQueryParamsSupplied = (this.attrs.hasBlock ? params.length === 0 : params.length === 1);
     if (onlyQueryParamsSupplied) {
       var appController = this.container.lookup('controller:application');
       if (appController) {

packages/ember/tests/helpers/link_to_test.js

@@ -1372,7 +1372,7 @@ QUnit.test('{{link-to}} populates href with fully supplied query param values',
   equal(Ember.$('#the-link').attr('href'), '/?bar=NAW&foo=456', 'link has right href');
 });
 
-QUnit.test('{{link-to}} with only query-params updates when route changes', function() {
+QUnit.test('{{link-to}} with only query-params and a block updates when route changes', function() {
   Router.map(function() {
     this.route('about');
   });
@@ -1405,3 +1405,37 @@ QUnit.test('{{link-to}} with only query-params updates when route changes', func
   });
   equal(Ember.$('#the-link').attr('href'), '/about?bar=NAW&foo=456', 'link has right href');
 });
+
+QUnit.test('Block-less {{link-to}} with only query-params updates when route changes', function() {
+  Router.map(function() {
+    this.route('about');
+  });
+
+  if (isEnabled('ember-routing-route-configured-query-params')) {
+    App.ApplicationRoute = Ember.Route.extend({
+      queryParams: {
+        foo: {
+          defaultValue: '123'
+        },
+        bar: {
+          defaultValue: 'yes'
+        }
+      }
+    });
+  } else {
+    App.ApplicationController = Ember.Controller.extend({
+      queryParams: ['foo', 'bar'],
+      foo: '123',
+      bar: 'yes'
+    });
+  }
+
+  Ember.TEMPLATES.application = compile('{{link-to "Index" (query-params foo=\'456\' bar=\'NAW\') id=\'the-link\'}}');
+  bootApplication();
+  equal(Ember.$('#the-link').attr('href'), '/?bar=NAW&foo=456', 'link has right href');
+
+  Ember.run(function() {
+    router.handleURL('/about');
+  });
+  equal(Ember.$('#the-link').attr('href'), '/about?bar=NAW&foo=456', 'link has right href');
+});