Merge pull request #472 from edx/revert-463-index-timestamped-models

Revert "Add indexes to all TimeStampedModels to match their default ordering"

ecommerce/extensions/refund/migrations/0002_auto_20151211_1417.py

-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('refund', '0001_squashed_0002_auto_20150515_2220'),
-    ]
-
-    operations = [
-        migrations.AlterIndexTogether(
-            name='refund',
-            index_together=set([('modified', 'created')]),
-        ),
-        migrations.AlterIndexTogether(
-            name='refundline',
-            index_together=set([('modified', 'created')]),
-        ),
-    ]

ecommerce/extensions/refund/migrations/0003_auto_20151214_1017.py → ecommerce/extensions/refund/migrations/0002_auto_20151214_1017.py

@@ -7,7 +7,7 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('refund', '0002_auto_20151211_1417'),
+        ('refund', '0001_squashed_0002_auto_20150515_2220'),
     ]
 
     operations = [

ecommerce/extensions/refund/models.py

@@ -58,10 +58,6 @@ class StatusMixin(object):
 
 class Refund(StatusMixin, TimeStampedModel):
     """Main refund model, used to represent the state of a refund."""
-
-    class Meta(TimeStampedModel.Meta):
-        index_together = ["modified", "created"]
-
     order = models.ForeignKey('order.Order', related_name='refunds', verbose_name=_('Order'))
     user = models.ForeignKey('core.User', related_name='refunds', verbose_name=_('User'))
     total_credit_excl_tax = models.DecimalField(_('Total Credit (excl. tax)'), decimal_places=2, max_digits=12)
@@ -226,10 +222,6 @@ class Refund(StatusMixin, TimeStampedModel):
 
 class RefundLine(StatusMixin, TimeStampedModel):
     """A refund line, used to represent the state of a single item as part of a larger Refund."""
-
-    class Meta(TimeStampedModel.Meta):
-        index_together = ["modified", "created"]
-
     refund = models.ForeignKey('refund.Refund', related_name='lines', verbose_name=_('Refund'))
     order_line = models.ForeignKey('order.Line', related_name='refund_lines', verbose_name=_('Order Line'))
     line_credit_excl_tax = models.DecimalField(_('Line Credit (excl. tax)'), decimal_places=2, max_digits=12)

ecommerce/invoice/models.py

@@ -15,9 +15,6 @@ class Invoice(TimeStampedModel):
 
     history = HistoricalRecords()
 
-    class Meta(TimeStampedModel.Meta):
-        index_together = ["modified", "created"]
-
     def __str__(self):
         return 'Invoice {id} for order number {order}'.format(id=self.id, order=self.basket.order.number)