Framework for supporting Ember 1.12/1.13 helpers simulataneously

app/assets/javascripts/discourse-common/lib/helpers.js.es6

@@ -13,8 +13,24 @@ export function htmlHelper(fn) {
   }
 }
 
+const _helpers = {};
+
 export function registerHelper(name, fn) {
-  Ember.HTMLBars._registerHelper(name, fn);
+  if (Ember.Helper) {
+    _helpers[name] = Ember.Helper.helper(fn);
+  } else {
+    return Ember.HTMLBars._registerHelper(name, fn);
+  }
+}
+
+export function findHelper(name) {
+  return _helpers[name];
+}
+
+export function registerHelpers(registry) {
+  Object.keys(_helpers).forEach(name => {
+    registry.register(`helper:${name}`, _helpers[name], { singleton: false });
+  });
 }
 
 function resolveParams(ctx, options) {
@@ -39,6 +55,13 @@ function resolveParams(ctx, options) {
 }
 
 export function registerUnbound(name, fn) {
+  if (Ember.Helper) {
+    _helpers[name] = Ember.Helper.helper(function() {
+      // TODO: Allow newer ember to use helpers
+    });
+    return;
+  }
+
   const func = function(property, options) {
     if (options.types && (options.types[0] === "ID" || options.types[0] === "PathExpression")) {
       property = get(this, property, options);

app/assets/javascripts/discourse-common/resolver.js.es6

@@ -1,5 +1,6 @@
-/* global requirejs, require */
+import { findHelper } from 'discourse-common/lib/helpers';
 
+/* global requirejs, require */
 var classify = Ember.String.classify;
 var get = Ember.get;
 
@@ -109,7 +110,9 @@ export function buildResolver(baseName) {
     },
 
     resolveHelper(parsedName) {
-      return this.customResolve(parsedName) || this._super(parsedName);
+      return findHelper(parsedName.fullNameWithoutType) ||
+             this.customResolve(parsedName) ||
+             this._super(parsedName);
     },
 
     resolveController(parsedName) {

app/assets/javascripts/discourse/helpers/custom-html.js.es6

@@ -20,15 +20,7 @@ export function setCustomHTML(key, html) {
   _customizations[key] = html;
 }
 
-registerHelper('custom-html', function(params, hash, options, env) {
+registerHelper('custom-html', function(params) {
-  const name = params[0];
+  const html = getCustomHTML(params[0]);
-  const html = getCustomHTML(name);
   if (html) { return html; }
-
-  const contextString = params[1];
-  const target = (env || contextString);
-  const container = target.container || target.data.view.container;
-  if (container.lookup('template:' + name)) {
-    return env.helpers.partial.helperFunction.apply(this, arguments);
-  }
 });

app/assets/javascripts/discourse/helpers/plugin-outlet.js.es6

@@ -29,17 +29,6 @@
 
    And it will be wired up automatically.
 
-   ## The block form
-
-   If you use the block form of the outlet, its contents will be displayed
-   if no connectors are found. Example:
-
-   ```handlebars
-     {{#plugin-outlet "hello-world"}}
-       Nobody says hello :'(
-     {{/plugin-outlet}}
-   ```
-
    ## Disabling
 
    If a plugin returns a disabled status, the outlets will not be wired up for it.
@@ -174,13 +163,6 @@ registerHelper('plugin-outlet', function(params, hash, options, env) {
         });
       }
     }
-  } else if (options.isBlock) {
-    const virtualView = Ember.View.extend({
-      isVirtual: true,
-      tagName: hash.tagName || '',
-      template: options.template
-    });
-    env.helpers.view.helperFunction.call(this, [virtualView], hash, options, env);
   }
 });
 

app/assets/javascripts/discourse/initializers/auto-load-modules.js.es6

@@ -1,4 +1,6 @@
-export function autoLoadModules() {
+import { registerHelpers } from 'discourse-common/lib/helpers';
+
+export function autoLoadModules(container, registry) {
   Object.keys(requirejs.entries).forEach(entry => {
     if ((/\/helpers\//).test(entry)) {
       require(entry, null, null, true);
@@ -7,6 +9,7 @@ export function autoLoadModules() {
       require(entry, null, null, true);
     }
   });
+  registerHelpers(registry);
 }
 
 export default {

app/assets/javascripts/wizard/initializers/load-helpers.js.es6

@@ -1,11 +1,14 @@
+import { registerHelpers } from 'discourse-common/lib/helpers';
+
 export default {
   name: 'load-helpers',
 
-  initialize() {
+  initialize(container, registry) {
     Object.keys(requirejs.entries).forEach(entry => {
       if ((/\/helpers\//).test(entry)) {
         require(entry, null, null, true);
       }
     });
+    registerHelpers(registry);
   }
 };