Fix #406 -- Allow moving waiting list entries to the top or bottom

src/pretix/base/migrations/0099_auto_20180807_0841.py

@@ -0,0 +1,28 @@
+# Generated by Django 2.1 on 2018-08-07 08:41
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0098_auto_20180731_1243'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='waitinglistentry',
+            options={'ordering': ('-priority', 'created'), 'verbose_name': 'Waiting list entry', 'verbose_name_plural': 'Waiting list entries'},
+        ),
+        migrations.AddField(
+            model_name='waitinglistentry',
+            name='priority',
+            field=models.IntegerField(default=0),
+        ),
+        migrations.AlterField(
+            model_name='waitinglistentry',
+            name='voucher',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='waitinglistentries', to='pretixbase.Voucher', verbose_name='Assigned voucher'),
+        ),
+    ]

src/pretix/base/models/waitinglist.py

@@ -65,11 +65,12 @@ class WaitingListEntry(LoggedModel):
         max_length=190,
         default='en'
     )
+    priority = models.IntegerField(default=0)
 
     class Meta:
         verbose_name = _("Waiting list entry")
         verbose_name_plural = _("Waiting list entries")
-        ordering = ['created']
+        ordering = ('-priority', 'created')
 
     def __str__(self):
         return '%s waits for %s' % (str(self.email), str(self.item))

src/pretix/base/services/waitinglist.py

@@ -22,7 +22,9 @@ def assign_automatically(event_id: int, user_id: int=None, subevent_id: int=None
 
     qs = WaitingListEntry.objects.filter(
         event=event, voucher__isnull=True
-    ).select_related('item', 'variation').prefetch_related('item__quotas', 'variation__quotas').order_by('created')
+    ).select_related('item', 'variation').prefetch_related(
+        'item__quotas', 'variation__quotas'
+    ).order_by('-priority', 'created')
 
     if subevent_id and event.has_subevents:
         subevent = event.subevents.get(id=subevent_id)