Fix missing photos in the single post view

closes #7545

app/assets/javascripts/app/views/content_view.js

@@ -17,15 +17,14 @@ app.views.Content = app.views.Base.extend({
 
   largePhoto : function() {
     var photos = this.model.get("photos");
-    if(!photos || photos.length === 0) { return }
+    if (!photos || photos.length === 0) { return false; }
     return photos[0];
   },
 
   smallPhotos : function() {
     var photos = this.model.get("photos");
-    if(!photos || photos.length < 2) { return }
-    photos.splice(0, 1); // remove first photo as it is already shown as largePhoto
-    return photos;
+    if (!photos || photos.length < 2) { return false; }
+    return photos.slice(1); // remove first photo as it is already shown as largePhoto
   },
 
   expandPost: function(evt) {

spec/javascripts/app/views/content_view_spec.js

@@ -4,11 +4,17 @@ describe("app.views.Content", function(){
     this.view = new app.views.Content({model : this.post});
   });
 
-  describe("rendering", function(){
+  describe("smallPhotos", function() {
     it("should return all but the first photo from the post", function() {
       this.post.set({photos : [1,2]}); // set 2 Photos
       expect(this.view.smallPhotos().length).toEqual(1);
     });
+
+    it("shouldn't change the photos array", function() {
+      this.post.set({photos: [1, 2]}); // set 2 Photos
+      this.view.smallPhotos();
+      expect(this.post.get("photos").length).toEqual(2);
+    });
   });
 
   describe("presenter", function(){