Add gates (groups of check-in devices) (#1825)

src/pretix/base/migrations/0168_auto_20201023_1447.py

@@ -0,0 +1,33 @@
+# Generated by Django 3.0.9 on 2020-10-23 14:47
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0167_checkinlist_exit_all_at'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Gate',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False)),
+                ('name', models.CharField(max_length=190)),
+                ('identifier', models.CharField(max_length=190)),
+                ('organizer', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='gates', to='pretixbase.Organizer')),
+            ],
+        ),
+        migrations.AddField(
+            model_name='checkin',
+            name='gate',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='checkins', to='pretixbase.Gate'),
+        ),
+        migrations.AddField(
+            model_name='device',
+            name='gate',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='devices', to='pretixbase.Gate'),
+        ),
+    ]