version bumps and migration to django 2.2

markov/migrations/0001_initial.py

@@ -27,7 +27,7 @@ class Migration(migrations.Migration):
                 ('k2', models.CharField(max_length=128)),
                 ('v', models.CharField(max_length=128)),
                 ('count', models.IntegerField(default=0)),
-                ('context', models.ForeignKey(to='markov.MarkovContext')),
+                ('context', models.ForeignKey(to='markov.MarkovContext', on_delete=models.CASCADE)),
             ],
             options={
                 'permissions': set([('teach_line', 'Can teach lines'), ('import_log_file', 'Can import states from a log file')]),
@@ -40,7 +40,7 @@ class Migration(migrations.Migration):
                 ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                 ('name', models.CharField(unique=True, max_length=64)),
                 ('chatter_chance', models.IntegerField(default=0)),
-                ('context', models.ForeignKey(to='markov.MarkovContext')),
+                ('context', models.ForeignKey(to='markov.MarkovContext', on_delete=models.CASCADE)),
             ],
             options={
             },

markov/models.py

@@ -28,7 +28,7 @@ class MarkovTarget(models.Model):
     """Define IRC targets that relate to a context, and can occasionally be talked to."""
 
     name = models.CharField(max_length=200, unique=True)
-    context = models.ForeignKey(MarkovContext)
+    context = models.ForeignKey(MarkovContext, on_delete=models.CASCADE)
 
     chatter_chance = models.IntegerField(default=0)
 
@@ -51,7 +51,7 @@ class MarkovState(models.Model):
     v = models.CharField(max_length=128)
 
     count = models.IntegerField(default=0)
-    context = models.ForeignKey(MarkovContext)
+    context = models.ForeignKey(MarkovContext, on_delete=models.CASCADE)
 
     class Meta:
         index_together = [