From d8a16a4a1a14d22ff3cf4f65136db055eb84dcfe Mon Sep 17 00:00:00 2001
From: Edward Faulkner <ef@alum.mit.edu>
Date: Mon, 23 Mar 2015 00:28:42 -0400
Subject: [PATCH] [BUGFIX beta] fix outlets inside render helper

Closes #10602
---
 .../lib/helpers/render.js                     |  46 ++++++++
 .../ember-routing-views/lib/views/outlet.js   |   2 +-
 packages/ember-routing/lib/system/router.js   |  31 ++++-
 packages/ember/tests/routing/basic_test.js    | 110 ++++++++++++++++++
 4 files changed, 186 insertions(+), 3 deletions(-)

diff --git a/packages/ember-routing-htmlbars/lib/helpers/render.js b/packages/ember-routing-htmlbars/lib/helpers/render.js
index f8d1e39b10b..b384e58048f 100644
--- a/packages/ember-routing-htmlbars/lib/helpers/render.js
+++ b/packages/ember-routing-htmlbars/lib/helpers/render.js
@@ -13,6 +13,7 @@ import {
 import { isStream } from "ember-metal/streams/utils";
 import mergeViewBindings from "ember-htmlbars/system/merge-view-bindings";
 import appendTemplatedView from "ember-htmlbars/system/append-templated-view";
+import create from 'ember-metal/platform/create';
 
 /**
   Calling ``{{render}}`` from within a template will insert another
@@ -191,6 +192,51 @@ export function renderHelper(params, hash, options, env) {
     helperName: 'render "' + name + '"'
   };
 
+  impersonateAnOutlet(currentView, view, name);
   mergeViewBindings(currentView, props, hash);
   appendTemplatedView(currentView, options.morph, view, props);
 }
+
+// Megahax to make outlets inside the render helper work, until we
+// can kill that behavior at 2.0.
+function impersonateAnOutlet(currentView, view, name) {
+  view._childOutlets = Ember.A();
+  view._isOutlet = true;
+  view._outletName = '__ember_orphans__';
+  view._matchOutletName = name;
+  view.setOutletState = function(state) {
+    var ownState;
+    if (state && (ownState = state.outlets[this._matchOutletName])) {
+      this._outletState = {
+        render: { name: 'render helper stub' },
+        outlets: create(null)
+      };
+      this._outletState.outlets[ownState.render.outlet] = ownState;
+      ownState.wasUsed = true;
+    } else {
+      this._outletState = null;
+    }
+    for (var i = 0; i < this._childOutlets.length; i++) {
+      var child = this._childOutlets[i];
+      child.setOutletState(this._outletState && this._outletState.outlets[child._outletName]);
+    }
+  };
+
+  var pointer = currentView;
+  var po;
+  while (pointer && !pointer._isOutlet) {
+    pointer = pointer._parentView;
+  }
+  while (pointer && (po = pointer._parentOutlet())) {
+    pointer = po;
+  }
+  if (pointer) {
+    // we've found the toplevel outlet. Subscribe to its
+    // __ember_orphan__ child outlet, which is our hack convention for
+    // stashing outlet state that may target the render helper.
+    pointer._childOutlets.push(view);
+    if (pointer._outletState) {
+      view.setOutletState(pointer._outletState.outlets[view._outletName]);
+    }
+  }
+}
diff --git a/packages/ember-routing-views/lib/views/outlet.js b/packages/ember-routing-views/lib/views/outlet.js
index 96dfe8d2547..6d9a3a53e7d 100644
--- a/packages/ember-routing-views/lib/views/outlet.js
+++ b/packages/ember-routing-views/lib/views/outlet.js
@@ -10,7 +10,7 @@ import { get } from "ember-metal/property_get";
 export var CoreOutletView = ContainerView.extend({
   init() {
     this._super();
-    this._childOutlets = [];
+    this._childOutlets = Ember.A();
     this._outletState = null;
   },
 
diff --git a/packages/ember-routing/lib/system/router.js b/packages/ember-routing/lib/system/router.js
index d0aeb3f718e..317b76d5f7a 100644
--- a/packages/ember-routing/lib/system/router.js
+++ b/packages/ember-routing/lib/system/router.js
@@ -1022,8 +1022,17 @@ function appendLiveRoute(liveRoutes, defaultParentState, renderOptions) {
   if (target) {
     set(target.outlets, renderOptions.outlet, myState);
   } else {
-    Ember.assert("You attempted to render into '" + renderOptions.into + "' but it was not found", !renderOptions.into);
-    liveRoutes = myState;
+    if (renderOptions.into) {
+      // Megahax time. Post-2.0-breaking-changes, we will just assert
+      // right here that the user tried to target a nonexistent
+      // thing. But for now we still need to support the `render`
+      // helper, and people are allowed to target templates rendered
+      // by the render helper. So instead we defer doing anyting with
+      // these orphan renders until afterRender.
+      appendOrphan(liveRoutes, renderOptions.into, myState);
+    } else {
+      liveRoutes = myState;
+    }
   }
   return {
     liveRoutes: liveRoutes,
@@ -1031,6 +1040,24 @@ function appendLiveRoute(liveRoutes, defaultParentState, renderOptions) {
   };
 }
 
+function appendOrphan(liveRoutes, into, myState) {
+  if (!liveRoutes.outlets.__ember_orphans__) {
+    liveRoutes.outlets.__ember_orphans__ = {
+      render: {
+        name: '__ember_orphans__'
+      },
+      outlets: create(null)
+    };
+  }
+  liveRoutes.outlets.__ember_orphans__.outlets[into] = myState;
+  Ember.run.schedule('afterRender', function() {
+    // `wasUsed` gets set by the render helper. See the function
+    // `impersonateAnOutlet`.
+    Ember.assert("You attempted to render into '" + into + "' but it was not found",
+                 liveRoutes.outlets.__ember_orphans__.outlets[into].wasUsed);
+  });
+}
+
 function representEmptyRoute(liveRoutes, defaultParentState, route) {
   // the route didn't render anything
   var alreadyAppended = findLiveRoute(liveRoutes, route.routeName);
diff --git a/packages/ember/tests/routing/basic_test.js b/packages/ember/tests/routing/basic_test.js
index 829e820db43..95fa0c72c61 100644
--- a/packages/ember/tests/routing/basic_test.js
+++ b/packages/ember/tests/routing/basic_test.js
@@ -3738,3 +3738,113 @@ QUnit.test("Allows any route to disconnectOutlet another route's templates", fun
   Ember.run(router, 'send', 'close');
   equal(Ember.$('#qunit-fixture').text().trim(), 'hi');
 });
+
+QUnit.test("Can render({into:...}) the render helper", function() {
+  Ember.TEMPLATES.application = compile('{{render "foo"}}');
+  Ember.TEMPLATES.foo = compile('<div class="foo">{{outlet}}</div>');
+  Ember.TEMPLATES.index = compile('other');
+  Ember.TEMPLATES.bar = compile('bar');
+
+  App.IndexRoute = Ember.Route.extend({
+    renderTemplate() {
+      this.render({ into: 'foo' });
+    },
+    actions: {
+      changeToBar: function() {
+        this.disconnectOutlet({
+          parentView: 'foo',
+          outlet: 'main'
+        });
+        this.render('bar', { into: 'foo' });
+      }
+    }
+  });
+
+  bootApplication();
+  equal(Ember.$('#qunit-fixture .foo').text(), 'other');
+  Ember.run(router, 'send', 'changeToBar');
+  equal(Ember.$('#qunit-fixture .foo').text(), 'bar');
+});
+
+QUnit.test("Can disconnect from the render helper", function() {
+  Ember.TEMPLATES.application = compile('{{render "foo"}}');
+  Ember.TEMPLATES.foo = compile('<div class="foo">{{outlet}}</div>');
+  Ember.TEMPLATES.index = compile('other');
+
+  App.IndexRoute = Ember.Route.extend({
+    renderTemplate() {
+      this.render({ into: 'foo' });
+    },
+    actions: {
+      disconnect: function() {
+        this.disconnectOutlet({
+          parentView: 'foo',
+          outlet: 'main'
+        });
+      }
+    }
+  });
+
+  bootApplication();
+  equal(Ember.$('#qunit-fixture .foo').text(), 'other');
+  Ember.run(router, 'send', 'disconnect');
+  equal(Ember.$('#qunit-fixture .foo').text(), '');
+});
+
+
+QUnit.test("Can render({into:...}) the render helper's children", function() {
+  Ember.TEMPLATES.application = compile('{{render "foo"}}');
+  Ember.TEMPLATES.foo = compile('<div class="foo">{{outlet}}</div>');
+  Ember.TEMPLATES.index = compile('<div class="index">{{outlet}}</div>');
+  Ember.TEMPLATES.other = compile('other');
+  Ember.TEMPLATES.bar = compile('bar');
+
+  App.IndexRoute = Ember.Route.extend({
+    renderTemplate() {
+      this.render({ into: 'foo' });
+      this.render('other', { into: 'index' });
+    },
+    actions: {
+      changeToBar: function() {
+        this.disconnectOutlet({
+          parentView: 'index',
+          outlet: 'main'
+        });
+        this.render('bar', { into: 'index' });
+      }
+    }
+  });
+
+  bootApplication();
+  equal(Ember.$('#qunit-fixture .foo .index').text(), 'other');
+  Ember.run(router, 'send', 'changeToBar');
+  equal(Ember.$('#qunit-fixture .foo .index').text(), 'bar');
+
+});
+
+QUnit.test("Can disconnect from the render helper's children", function() {
+  Ember.TEMPLATES.application = compile('{{render "foo"}}');
+  Ember.TEMPLATES.foo = compile('<div class="foo">{{outlet}}</div>');
+  Ember.TEMPLATES.index = compile('<div class="index">{{outlet}}</div>');
+  Ember.TEMPLATES.other = compile('other');
+
+  App.IndexRoute = Ember.Route.extend({
+    renderTemplate() {
+      this.render({ into: 'foo' });
+      this.render('other', { into: 'index' });
+    },
+    actions: {
+      disconnect: function() {
+        this.disconnectOutlet({
+          parentView: 'index',
+          outlet: 'main'
+        });
+      }
+    }
+  });
+
+  bootApplication();
+  equal(Ember.$('#qunit-fixture .foo .index').text(), 'other');
+  Ember.run(router, 'send', 'disconnect');
+  equal(Ember.$('#qunit-fixture .foo .index').text(), '');
+});