Updated version to 1.3.2.

Updated status to stable/production.
Added AttributeError exception handling for models that specify a SortableForeignKey that does not inherit from Sortable.
Added template support for nested objects that are sortable by a foreign key, where the foreign key is not sortable.

adminsortable/templates/adminsortable/shared/list_items.html

@@ -1,6 +1,12 @@
 {% load adminsortable_tags %}
-{% for object in list_objects %}
-	<li>
-	    {% render_object_rep object %}
-	</li>
-{% endfor %}
+{% with list_objects_length=list_objects|length %}
+    {% for object in list_objects %}
+        <li>
+            {% if list_objects_length > 1 %}
+                {% render_object_rep object %}
+            {% else %}
+                {{ object }}
+            {% endif %}
+        </li>
+    {% endfor %}
+{% endwith %}

adminsortable/templates/adminsortable/shared/nested_objects.html

@@ -5,12 +5,18 @@
         {% for regrouped_object in regrouped_objects %}
             <li>
                 {% with object=regrouped_object.grouper %}
-                    {% render_object_rep object %}
+                    {% if sortable_by_class_is_sortable %}
+                        {% render_object_rep object %}
+                    {% else %}
+                        {{ object }}
+                    {% endif %}
                 {% endwith %}
                 {% if regrouped_object.list %}
-                    <ul {% if regrouped_object.grouper.is_sortable %}class="sortable"{% endif %}>
+                    {% with regrouped_object_list_length=regrouped_object.list|length %}
+                    <ul {% if regrouped_object_list_length > 1 %}class="sortable"{% endif %}>
                         {% render_list_items regrouped_object.list %}
                     </ul>
+                    {% endwith %}
                 {% endif %}
             </li>
         {% endfor %}