Add database table for storing file attachments against a BuildOrder

InvenTree/build/migrations/0022_buildorderattachment.py

@@ -0,0 +1,31 @@
+# Generated by Django 3.0.7 on 2020-10-26 04:17
+
+import InvenTree.models
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('build', '0021_auto_20201020_0908_squashed_0026_auto_20201023_1228'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='BuildOrderAttachment',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('attachment', models.FileField(help_text='Select file to attach', upload_to=InvenTree.models.rename_attachment)),
+                ('comment', models.CharField(blank=True, help_text='File comment', max_length=100)),
+                ('upload_date', models.DateField(auto_now_add=True, null=True)),
+                ('build', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='attachments', to='build.Build')),
+                ('user', models.ForeignKey(blank=True, help_text='User', null=True, on_delete=django.db.models.deletion.SET_NULL, to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]