Add "default_expiry" field to Part model

InvenTree/part/migrations/0061_auto_20210104_2331.py

@@ -0,0 +1,36 @@
+# Generated by Django 3.0.7 on 2021-01-04 12:31
+
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('company', '0031_auto_20210103_2215'),
+        ('part', '0060_merge_20201112_1722'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='part',
+            name='default_expiry',
+            field=models.PositiveIntegerField(default=0, help_text='Expiry time (in days) for stock items of this part', validators=[django.core.validators.MinValueValidator(0)], verbose_name='Default Expiry'),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='default_supplier',
+            field=models.ForeignKey(blank=True, help_text='Default supplier part', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='default_parts', to='company.SupplierPart', verbose_name='Default Supplier'),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='minimum_stock',
+            field=models.PositiveIntegerField(default=0, help_text='Minimum allowed stock level', validators=[django.core.validators.MinValueValidator(0)], verbose_name='Minimum Stock'),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='units',
+            field=models.CharField(blank=True, default='', help_text='Stock keeping units for this part', max_length=20, null=True, verbose_name='Units'),
+        ),
+    ]