little fixes

representatives/admin.py

@@ -60,7 +60,10 @@ class RepresentativeAdmin(admin.ModelAdmin):
         MandateInline
     ]
 
-
+class GroupAdmin(admin.ModelAdmin):
+    list_display = ('id', 'name', 'abbreviation', 'kind')
+    list_filter = ('kind',)
+    
 class MandateAdmin(admin.ModelAdmin):
     list_display = ('id', 'representative', 'group', 'role', 'constituency', 'begin_date', 'end_date')
     search_fields = ('representative', 'group', 'constituency')
@@ -69,5 +72,5 @@ class MandateAdmin(admin.ModelAdmin):
 admin.site.register(Representative, RepresentativeAdmin)
 admin.site.register(Country)
 admin.site.register(Mandate, MandateAdmin)
-admin.site.register(Group)
+admin.site.register(Group, GroupAdmin)
 admin.site.register(Constituency)

representatives/migrations/0004_auto_20150709_1601.py

+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('representatives', '0003_auto_20150702_1827'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='representative',
+            options={'ordering': ['last_name', 'first_name']},
+        ),
+    ]

representatives/models.py

@@ -204,7 +204,14 @@ class Constituency(HashableModel, TimeStampedModel):
         return unicode(self.name)
 
 
+class MandateManager(models.Manager):
+    def get_queryset(self):
+        return super(MandateManager, self).get_queryset().select_related('group', 'constituency')
+    
 class Mandate(HashableModel, TimeStampedModel):
+
+    objects = MandateManager()
+    
     group = models.ForeignKey(Group, null=True, related_name='mandates')
     constituency = models.ForeignKey(Constituency, null=True, related_name='mandates')
     representative = models.ForeignKey(Representative, related_name='mandates')