Enable sorting by order number in template. Add django-sorting as a requirement

oscar/__init__.py

 # a full release
 
 VERSION = (0, 2, 0, 'beta', 1)
-    
+
 def get_short_version():
     return '%s.%s' % (VERSION[0], VERSION[1])
 
     'oscar.apps.dashboard.offers',
     'oscar.apps.dashboard.ranges',
     'oscar.apps.dashboard.vouchers',
+
+    'django_sorting',
 ]
 
 

oscar/templates/catalogue/partials/pagination.html

+{% load display_tags %}
+
 <div>
     <ul class="pager">
         {% if page_obj.has_previous %}
-        <li class="previous"><a href="?page={{ page_obj.previous_page_number }}">previous</a></li>
+        <li class="previous"><a href="?{% get_parameters page %}page={{ page_obj.previous_page_number }}">previous</a></li>
         {% endif %}
         <li class="current">Page {{ page_obj.number }} of {{ paginator.num_pages }}</li>
         {% if page_obj.has_next %}
-        <li class="next"><a href="?page={{ page_obj.next_page_number }}">next</a></li>
+        <li class="next"><a href="?{% get_parameters page %}page={{ page_obj.next_page_number }}">next</a></li>
         {% endif %}
     </ul>
 </div>

oscar/templates/dashboard/orders/order_list.html

 {% extends 'dashboard/layout.html' %}
 {% load currency_filters %}
+{% load sorting_tags %}
 {% block body_class %}orders{% endblock %}
 {% block title %}
 Order management | {{ block.super }}
 <table class="table table-striped table-bordered">
     <tr>
         <th></th>
-        <th>Order number</th>
+        <th>{% anchor 'number' 'Order number' %}</th>
         <th>Total inc tax</th>
         <th>Date of purchase</th>
         <th>Number of items</th>

oscar/templatetags/display_tags.py

+from django import template
+
+register = template.Library()
+
+def get_parameters(parser, token):
+    """
+        {% get_parameters except_field %}
+    """
+
+    args = token.split_contents()
+    if len(args) < 2:
+        raise template.TemplateSyntaxError, "get_parameters tag takes at least 1 argument"
+    return GetParametersNode(args[1].strip())
+
+
+class GetParametersNode(template.Node):
+    """
+        Renders current get parameters except for the specified parameter
+    """
+    def __init__(self, field):
+        self.field = field
+
+    def render(self, context):
+        request = context['request']
+        getvars = request.GET.copy()
+
+        if self.field in getvars:
+            del getvars[self.field]
+
+        if len(getvars.keys()) > 0:
+            get_params = "%s&" % getvars.urlencode()
+        else:
+            get_params = ''
+
+        return get_params
+
+get_parameters = register.tag(get_parameters)

requirements.txt

 PyHamcrest==1.6
 South==0.7.3
 purl==0.3.2
+django-sorting==0.1

setup.py

           'django-treebeard==1.61',
           'sorl-thumbnail==11.12',
           'python-memcached==1.48',
+          'django-sorting==0.1',
           ],
       # See http://pypi.python.org/pypi?%3Aaction=list_classifiers
       classifiers=['Environment :: Web Environment',