From cc2ed32ccb82f30d0bfed30417b50401bcb79db5 Mon Sep 17 00:00:00 2001
From: zmagod <zmago_devetak@yahoo.com>
Date: Wed, 17 Aug 2016 13:29:22 +0200
Subject: [PATCH] fixes canvas bug when no actions are available for the viewer

---
 app/views/experiments/canvas.html.erb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/views/experiments/canvas.html.erb b/app/views/experiments/canvas.html.erb
index bbb09262b..fe217fe8a 100644
--- a/app/views/experiments/canvas.html.erb
+++ b/app/views/experiments/canvas.html.erb
@@ -33,7 +33,7 @@
     </span>
   <% end %>
 
-  <div id="zoom-level-buttons" class="btn-group pull-right" data-toggle="buttons">
+  <div id="zoom-level-buttons" class="btn-group <%= 'pull-right' if can_edit_canvas(@experiment) && can_create_experiment(@project)  %>" data-toggle="buttons">
     <%=link_to canvas_full_zoom_experiment_path(@experiment), remote: true, type: "button", class: "ajax btn btn-primary active", "data-action" => "full_zoom", "data-toggle" => "button", "aria-pressed" => true do %>
       <span class="glyphicon glyphicon-th-large" aria-hidden="true" ></span>
     <% end %>