Add required on_delete parameters for Dj2.0 compatibility

allianceauth/timerboard/migrations/0003_on_delete.py

@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.5 on 2017-09-28 02:16
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('timerboard', '0002_make_strings_more_stringy'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='timer',
+            name='eve_character',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, to='eveonline.EveCharacter'),
+        ),
+        migrations.AlterField(
+            model_name='timer',
+            name='user',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, to=settings.AUTH_USER_MODEL),
+        ),
+    ]

allianceauth/timerboard/models.py

@@ -16,10 +16,10 @@ class Timer(models.Model):
     objective = models.CharField(max_length=254, default="")
     eve_time = models.DateTimeField()
     important = models.BooleanField(default=False)
-    eve_character = models.ForeignKey(EveCharacter)
-    eve_corp = models.ForeignKey(EveCorporationInfo)
+    eve_character = models.ForeignKey(EveCharacter, null=True, on_delete=models.SET_NULL)
+    eve_corp = models.ForeignKey(EveCorporationInfo, on_delete=models.CASCADE)
     corp_timer = models.BooleanField(default=False)
-    user = models.ForeignKey(User)
+    user = models.ForeignKey(User, null=True, on_delete=models.SET_NULL)
 
     def __str__(self):
         return str(self.system) + ' ' + str(self.details)