Sortable instances

New filter that appends a timestamp to the uptime localized string,
managed with tablesorter new parser on client side.

Change-Id: I999b04d3da93bc00003fed954382a0ac99b506a3
Closes-Bug: #1222286

horizon/static/horizon/js/horizon.tables.js

@@ -196,6 +196,20 @@ $.tablesorter.addParser({
     type: 'numeric'
 });
 
+$.tablesorter.addParser({
+    // set a unique id
+    id: 'timesinceSorter',
+    is: function(s) {
+        // Not an auto-detected parser
+        return false;
+    },
+    // compare int values
+    format: function(s, table, cell, cellIndex) {
+        return $(cell).find('span').data('seconds');
+    },
+    type: 'numeric'
+});
+
 horizon.datatables.disable_buttons = function() {
   $("table .table_actions").on("click", ".btn.disabled", function(event){
     event.preventDefault();
@@ -260,6 +274,8 @@ $(parent).find("table.datatable").each(function () {
         header_options[i] = {sorter: 'sizeSorter'};
       } else if ($th.data('type') == 'ip'){
         header_options[i] = {sorter: 'ipAddress'};
+      } else if ($th.data('type') == 'timesince'){
+        header_options[i] = {sorter: 'timesinceSorter'};
       }
     });
     $table.tablesorter({

horizon/utils/filters.py

@@ -17,6 +17,9 @@
 import iso8601
 
 from django.template.defaultfilters import register  # noqa
+from django.template.defaultfilters import timesince  # noqa
+from django.utils.safestring import mark_safe  # noqa
+from django.utils import timezone
 
 
 @register.filter
@@ -36,3 +39,12 @@ def parse_isotime(timestr):
         raise ValueError(e.message)
     except TypeError as e:
         raise ValueError(e.message)
+
+
+@register.filter
+def timesince_sortable(dt):
+    delta = timezone.now() - dt
+    # timedelta.total_seconds() not supported on python < 2.7
+    seconds = delta.seconds + (delta.days * 24 * 3600)
+    return mark_safe("<span data-seconds=\"%d\">%s</span>" %
+                     (seconds, timesince(dt)))

openstack_dashboard/dashboards/admin/instances/tables.py

@@ -117,7 +117,9 @@ class AdminInstancesTable(tables.DataTable):
                           verbose_name=_("Power State"))
     created = tables.Column("created",
                             verbose_name=_("Uptime"),
-                            filters=(filters.parse_isotime, timesince))
+                            filters=(filters.parse_isotime,
+                                     filters.timesince_sortable),
+                            attrs={'data-type': 'timesince'})
 
     class Meta:
         name = "instances"

openstack_dashboard/dashboards/project/instances/tables.py

@@ -596,7 +596,9 @@ class InstancesTable(tables.DataTable):
                           verbose_name=_("Power State"))
     created = tables.Column("created",
                             verbose_name=_("Uptime"),
-                            filters=(filters.parse_isotime, timesince))
+                            filters=(filters.parse_isotime,
+                                     filters.timesince_sortable),
+                            attrs={'data-type': 'timesince'})
 
     class Meta:
         name = "instances"

openstack_dashboard/usage/tables.py

@@ -5,6 +5,7 @@ from django.utils.translation import ugettext_lazy as _  # noqa
 
 from horizon import tables
 from horizon.templatetags import sizeformat
+from horizon.utils import filters
 
 
 class CSVSummary(tables.LinkAction):
@@ -59,7 +60,8 @@ class ProjectUsageTable(BaseUsageTable):
                              link=get_instance_link)
     uptime = tables.Column('uptime_at',
                            verbose_name=_("Uptime"),
-                           filters=(timesince,))
+                           filters=(filters.timesince_sortable,),
+                           attrs={'data-type': 'timesince'})
 
     def get_object_id(self, datum):
         return datum.get('instance_id', id(datum))