make price a real property of order

Signed-off-by: Nico Schottelius <nico@nico-notebook.schottelius.org>

uncloud_pay/migrations/0004_auto_20200801_1604.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.0.6 on 2020-08-01 16:04
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_pay', '0003_auto_20200621_1442'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='order',
+            name='replaced_by',
+        ),
+        migrations.AddField(
+            model_name='order',
+            name='replaces',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='replaced_by', to='uncloud_pay.Order'),
+        ),
+    ]

uncloud_pay/migrations/0005_auto_20200801_1626.py

@@ -0,0 +1,24 @@
+# Generated by Django 3.0.6 on 2020-08-01 16:26
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_pay', '0004_auto_20200801_1604'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='order',
+            name='one_time_price',
+            field=models.DecimalField(decimal_places=2, default=0.0, max_digits=10, validators=[django.core.validators.MinValueValidator(0)]),
+        ),
+        migrations.AddField(
+            model_name='order',
+            name='recurring_price',
+            field=models.DecimalField(decimal_places=2, default=0.0, max_digits=10, validators=[django.core.validators.MinValueValidator(0)]),
+        ),
+    ]