adding internal price breaks as in #1606

InvenTree/part/migrations/0067_partinternalpricebreak.py

@@ -0,0 +1,30 @@
+# Generated by Django 3.2 on 2021-06-05 14:13
+
+import InvenTree.fields
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+import djmoney.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0066_bomitem_allow_variants'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='PartInternalPriceBreak',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('quantity', InvenTree.fields.RoundingDecimalField(decimal_places=5, default=1, help_text='Price break quantity', max_digits=15, validators=[django.core.validators.MinValueValidator(1)], verbose_name='Quantity')),
+                ('price_currency', djmoney.models.fields.CurrencyField(choices=[('AUD', 'Australian Dollar'), ('CAD', 'Canadian Dollar'), ('EUR', 'Euro'), ('NZD', 'New Zealand Dollar'), ('GBP', 'Pound Sterling'), ('USD', 'US Dollar'), ('JPY', 'Yen')], default='USD', editable=False, max_length=3)),
+                ('price', djmoney.models.fields.MoneyField(decimal_places=4, default_currency='USD', help_text='Unit price at specified quantity', max_digits=19, null=True, verbose_name='Price')),
+                ('part', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='internalpricebreaks', to='part.part', verbose_name='Part')),
+            ],
+            options={
+                'unique_together': {('part', 'quantity')},
+            },
+        ),
+    ]