Restrict navbar so that only approved users may see the administration dropdown

go/go/templates/navigation.html

+{% load go_extras %}
 <div class="navbar navbar-default">
   <div class="navbar-header">
     <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-responsive-collapse">
@@ -12,7 +13,7 @@
       <li><a href="{% url 'about' %}">About</a></li>
       {% if user.is_authenticated %}
       <li><a href="{% url 'my_links' %}">My Links</a></li>
-      {% if user.is_staff %}
+      {% if user.is_staff and user|is_approved %}
       <li class="dropdown">
         <a href="#" class="dropdown-toggle" data-toggle="dropdown">Administration<b class="caret"></b></a>
         <ul class="dropdown-menu">
@@ -21,6 +22,9 @@
         </ul>
       </li>
       {% endif %}
+      {% if not user|is_registered %}
+      <li><a href="{% url 'signup' %}">Register</a></li>
+      {% endif %}
       <li><a href="{% url 'go_logout' %}">Log Out</a></li>
       {% else %}
       <li><a href="{% url 'go_login' %}">Log In</a></li>

go/go/templatetags/go_extras.py

@@ -9,3 +9,11 @@ def is_registered( user ):
         return True
     except RegisteredUser.DoesNotExist:
         return False
+
+@register.filter
+def is_approved(user):
+    try:
+        registered = RegisteredUser.objects.get( username=user.username )
+        return registered.approved
+    except RegisteredUser.DoesNotExist:
+        return False