Safer migration

api/projects/tags/migrations/0005_add_tag_fields_for_stale_flags_logic.py

@@ -5,6 +5,7 @@
 from django.db import migrations, models
 from django.db.backends.base.schema import BaseDatabaseSchemaEditor
 
+from projects.tags.models import TagType
 
 PROTECTED_LABELS = {"protected", "donotdelete", "permanent"}
 LABEL_REGEX = re.compile(r"[ _]")
@@ -36,6 +37,14 @@ def mark_existing_tags_as_permanent(
     tag_class.objects.bulk_update(to_update, fields=["is_permanent"])
 
 
+def populate_default_tag_type(
+    apps: Apps, schema_editor: BaseDatabaseSchemaEditor
+) -> None:
+    apps.get_model("tags", "tag").objects.filter(type__isnull=True).update(
+        type=TagType.NONE.value
+    )
+
+
 class Migration(migrations.Migration):
     dependencies = [
         ("tags", "0004_add_uuid_field"),
@@ -62,6 +71,19 @@ class Migration(migrations.Migration):
             mark_existing_tags_as_permanent, reverse_code=migrations.RunPython.noop
         ),
         migrations.AddField(
+            model_name="tag",
+            name="type",
+            field=models.CharField(
+                choices=[("NONE", "None"), ("STALE", "Stale")],
+                null=True,
+                help_text="Field used to provide a consistent identifier for the FE and API to use for business logic.",
+                max_length=100,
+            ),
+        ),
+        migrations.RunPython(
+            populate_default_tag_type, reverse_code=migrations.RunPython.noop
+        ),
+        migrations.AlterField(
             model_name="tag",
             name="type",
             field=models.CharField(