add units to search fields

cookbook/migrations/0168_add_unit_searchfields.py

@@ -0,0 +1,20 @@
+from django.db import migrations
+
+from cookbook.models import SearchFields
+
+
+def create_searchfields(apps, schema_editor):
+    SearchFields.objects.create(name='Units', field='steps__ingredients__unit__name')
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cookbook', '0167_userpreference_left_handed'),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            create_searchfields
+        ),
+    ]