From 5c6df7d6dd8eab09dd536b6b16a21a6044dba0cf Mon Sep 17 00:00:00 2001
From: Tim Fischbach <tfischbach@codevise.de>
Date: Tue, 12 May 2015 18:32:14 +0200
Subject: [PATCH] Improve SubsetCollection

* Remove models when they are removed from the parent
* Correctly call add when models are added to the parent
---
 .../pageflow/editor/collections/subset_collection.js        | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/assets/javascripts/pageflow/editor/collections/subset_collection.js b/app/assets/javascripts/pageflow/editor/collections/subset_collection.js
index 5c33e74625..b85e2bc008 100644
--- a/app/assets/javascripts/pageflow/editor/collections/subset_collection.js
+++ b/app/assets/javascripts/pageflow/editor/collections/subset_collection.js
@@ -16,10 +16,14 @@ pageflow.SubsetCollection = Backbone.Collection.extend({
 
     this.listenTo(this.parent, 'add', function(model, collection, options) {
       if (!adding && this.filter(model)) {
-        this.add(model, collection, options);
+        this.add(model, options);
       }
     });
 
+    this.listenTo(this.parent, 'remove', function(model) {
+      this.remove(model);
+    });
+
     this.listenTo(this, 'add', function(model, collection, options) {
       adding = true;
       this.parent.add(model);