1 files changed, 26 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb
new file mode 100644
index 0000000000..bb2d8375bd
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb
@@ -0,0 +1,26 @@
+<%
+  traces = [
+    ["Application Trace", @exception.application_backtrace],
+    ["Framework Trace", @exception.framework_backtrace],
+    ["Full Trace", @exception.clean_backtrace]
+  ]
+  names = traces.collect {|name, trace| name}
+%>
+
+<p><code>RAILS_ROOT: <%= defined?(RAILS_ROOT) ? RAILS_ROOT : "unset" %></code></p>
+
+<div id="traces">
+  <% names.each do |name| %>
+    <%
+      show = "document.getElementById('#{name.gsub /\s/, '-'}').style.display='block';"
+      hide = (names - [name]).collect {|hide_name| "document.getElementById('#{hide_name.gsub /\s/, '-'}').style.display='none';"}
+    %>
+    <a href="#" onclick="<%= hide %><%= show %>; return false;"><%= name %></a> <%= '|' unless names.last == name %>
+  <% end %>
+
+  <% traces.each do |name, trace| %>
+    <div id="<%= name.gsub /\s/, '-' %>" style="display: <%= name == "Application Trace" ? 'block' : 'none' %>;">
+      <pre><code><%= trace.join "\n" %></code></pre>
+    </div>
+  <% end %>
+</div>