Error popup only shows on flash[:error]

app/views/layouts/page_layout.html.erb

@@ -13,12 +13,10 @@
 </head>
 <body>
   <%= yield %>
-  <% if !flash.empty? %>
+  <% if flash[:error] %>
     <div class="modal alert alert-error hide" id="myModal">
       <p type="button" class="close" data-dismiss="modal">×</p>
-      <% flash.each do |key, msg| %>
-          <%= "<strong>#{msg}</strong><br/>".html_safe%>
-      <% end%>
+        <%= "<strong>#{flash[:error]}</strong><br/>".html_safe%>
     </div>
     <script>
       $('#myModal').modal('show')