FIX: Clicking navigation pills a second time should refresh the list

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app/assets/javascripts/discourse/initializers/inject-app-events.js.es6

@@ -1,13 +1,15 @@
 export default {
   name: "inject-app-events",
   initialize: function(container, application) {
-    var AppEvents = Ember.Object.extend(Ember.Evented);
-    application.register('app-events:main', AppEvents, { singleton: true });
+    var appEvents = Ember.Object.createWithMixins(Ember.Evented);
+    application.register('app-events:main', appEvents, { instantiate: false });
 
     application.inject('controller', 'appEvents', 'app-events:main');
     application.inject('component', 'appEvents', 'app-events:main');
     application.inject('route', 'appEvents', 'app-events:main');
     application.inject('view', 'appEvents', 'app-events:main');
     application.inject('model', 'appEvents', 'app-events:main');
+
+    Discourse.URL.appEvents = appEvents;
   }
 };

app/assets/javascripts/discourse/lib/url.js

@@ -145,8 +145,10 @@ Discourse.URL = Em.Object.createWithMixins({
     // TODO: Extract into rules we can inject into the URL handler
     if (this.navigatedToHome(oldPath, path)) { return; }
 
-    if (path.match(/^\/?users\/[^\/]+$/)) {
-      path += "/activity";
+    if (oldPath === path) {
+      // If navigating to the same path send an app event. Views can watch it
+      // and tell their controllers to refresh
+      this.appEvents.trigger('url:refresh');
     }
 
     return this.handleURL(path);
@@ -244,12 +246,7 @@ Discourse.URL = Em.Object.createWithMixins({
     var homepage = Discourse.Utilities.defaultHomepage();
 
     if (window.history && window.history.pushState && path === "/" && (oldPath === "/" || oldPath === "/" + homepage)) {
-      // refresh the list
-      switch (homepage) {
-        case "top" :       { this.controllerFor('discovery/top').send('refresh'); break; }
-        case "categories": { this.controllerFor('discovery/categories').send('refresh'); break; }
-        default:           { this.controllerFor('discovery/topics').send('refresh'); break; }
-      }
+      this.appEvents.trigger('url:refresh');
       return true;
     }
 

app/assets/javascripts/discourse/mixins/url-refresh.js.es6

@@ -0,0 +1,19 @@
+// A Mixin that a view can use to listen for 'url:refresh' when
+// it is on screen, and will send an action to the controller to
+// refresh its data.
+//
+// This is useful if you want to get around Ember's default
+// behavior of not refreshing when navigating to the same place.
+export default Em.Mixin.create({
+  _initURLRefresh: function() {
+    this.appEvents.on('url:refresh', this, '_urlRefresh');
+  }.on('didInsertElement'),
+
+  _tearDownURLRefresh: function() {
+    this.appEvents.off('url:refresh', this, '_urlRefresh');
+  }.on('willDestroyElement'),
+
+  _urlRefresh: function() {
+    this.get('controller').send('refresh');
+  }
+});

app/assets/javascripts/discourse/views/discovery-categories.js.es6

@@ -1,4 +1,6 @@
-export default Discourse.View.extend({
+import UrlRefresh from 'discourse/mixins/url-refresh';
+
+export default Discourse.View.extend(UrlRefresh, {
 
   orderingChanged: function(){
     if (this.get("controller.ordering")) {

app/assets/javascripts/discourse/views/discovery-top.js.es6

@@ -1 +1,3 @@
-export default Discourse.View.extend(Discourse.ScrollTop);
+import UrlRefresh from 'discourse/mixins/url-refresh';
+
+export default Discourse.View.extend(Discourse.ScrollTop, UrlRefresh);

app/assets/javascripts/discourse/views/discovery-topics.js.es6

@@ -1,13 +1,6 @@
-/**
-  This view handles rendering of a list of topics under discovery, with support
-  for loading more as well as remembering your scroll position.
+import UrlRefresh from 'discourse/mixins/url-refresh';
 
-  @class DiscoveryTopicsView
-  @extends Discourse.View
-  @namespace Discourse
-  @module Discourse
-**/
-export default Discourse.View.extend(Discourse.LoadMore, {
+export default Discourse.View.extend(Discourse.LoadMore, UrlRefresh, {
   eyelineSelector: '.topic-list-item',
 
   actions: {

app/assets/javascripts/discourse/views/poster-expansion.js.es6

@@ -5,27 +5,8 @@ export default Discourse.View.extend({
   classNameBindings: ['controller.visible::hidden', 'controller.showBadges'],
 
   _setup: function() {
-    var self = this,
-        width = this.$().width();
-
-    this.appEvents.on('poster:expand', function(target) {
-      if (!target) { return; }
-      Em.run.schedule('afterRender', function() {
-        if (target) {
-          var position = target.offset();
-          if (position) {
-            position.left += target.width() + 10;
-
-            var overage = ($(window).width() - 50) - (position.left + width);
-            if (overage < 0) {
-              position.left += overage;
-              position.top += target.height() + 5;
-            }
-            self.$().css(position);
-          }
-        }
-      });
-    });
+    var self = this;
+    this.appEvents.on('poster:expand', this, '_posterExpand');
 
     $('html').off(clickOutsideEventName).on(clickOutsideEventName, function(e) {
       if (self.get('controller.visible')) {
@@ -40,9 +21,30 @@ export default Discourse.View.extend({
     });
   }.on('didInsertElement'),
 
+  _posterExpand: function(target) {
+    if (!target) { return; }
+    var self = this,
+        width = this.$().width();
+    Em.run.schedule('afterRender', function() {
+      if (target) {
+        var position = target.offset();
+        if (position) {
+          position.left += target.width() + 10;
+
+          var overage = ($(window).width() - 50) - (position.left + width);
+          if (overage < 0) {
+            position.left += overage;
+            position.top += target.height() + 5;
+          }
+          self.$().css(position);
+        }
+      }
+    });
+  },
+
   _removeEvents: function() {
     $('html').off(clickOutsideEventName);
-    this.appEvents.off('poster:expand');
+    this.appEvents.off('poster:expand', this, '_posterExpand');
   }.on('willDestroyElement')
 
 });