lots of cleanup and refactoring

cookbook/migrations/0009_auto_20191114_1800.py

@@ -0,0 +1,20 @@
+# Generated by Django 2.2.7 on 2019-11-14 17:00
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cookbook', '0008_auto_20191114_1046'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='recipe',
+            name='created_by',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to=settings.AUTH_USER_MODEL),
+        ),
+    ]